small tweak to example config

The automatic ${MODEL_ID} macro includes the name of the model and can be used in Cmd and CmdStop.

.github/ISSUE_TEMPLATE/bug-report.md

@@ -1,11 +1,13 @@
 ---
 name: Bug Report
-about: Something is not working as expected...
+about: I found a defect
 title: ''
-labels: bug
+labels: 'unconfirmed bug'
 assignees: ''
 
 ---
+> [!IMPORTANT]
+> If you have questions about llama-swap please post in the Q&A in Discussions. Use bug reports when you've found a defect and wish to discuss a fix.
 
 **Describe the bug**
 A clear and concise description of what the bug is.

.github/workflows/go-ci.yml

@@ -22,6 +22,13 @@ jobs:
       with:
         go-version: '1.23'
 
+    # Only run in this linux based runner
+    - name: Check Formatting
+      run: |
+        if [ "$(gofmt -l . | grep -v 'event/.*_test.go' | wc -l)" -gt 0 ]; then
+          gofmt -l . | grep -v 'event/.*_test.go'
+          exit 1
+        fi
     # cache simple-responder to save the build time
     - name: Restore Simple Responder
       id: restore-simple-responder

.gitignore

@@ -4,3 +4,4 @@ build/
 dist/
 .vscode
 .DS_Store
+.dev/

Makefile

@@ -45,6 +45,7 @@ mac: ui
 linux: ui
 	@echo "Building Linux binary..."
 	GOOS=linux GOARCH=amd64 go build -ldflags="-X main.commit=${GIT_HASH} -X main.version=local_${GIT_HASH} -X main.date=${BUILD_DATE}" -o $(BUILD_DIR)/$(APP_NAME)-linux-amd64
+	GOOS=linux GOARCH=arm64 go build -ldflags="-X main.commit=${GIT_HASH} -X main.version=local_${GIT_HASH} -X main.date=${BUILD_DATE}" -o $(BUILD_DIR)/$(APP_NAME)-linux-arm64
 
 # Build Windows binary
 windows: ui

README.md

@@ -7,7 +7,7 @@
 
 llama-swap is a light weight, transparent proxy server that provides automatic model swapping to llama.cpp's server.
 
-Written in golang, it is very easy to install (single binary with no dependencies) and configure (single yaml file). To get started, download a pre-built binary or use the provided docker images.
+Written in golang, it is very easy to install (single binary with no dependencies) and configure (single yaml file). To get started, download a pre-built binary, a provided docker images or Homebrew.
 
 ## Features:
 
@@ -18,32 +18,37 @@ Written in golang, it is very easy to install (single binary with no dependencie
   - `v1/completions`
   - `v1/chat/completions`
   - `v1/embeddings`
-  - `v1/rerank`, `v1/reranking`, `rerank`
   - `v1/audio/speech` ([#36](https://github.com/mostlygeek/llama-swap/issues/36))
   - `v1/audio/transcriptions` ([docs](https://github.com/mostlygeek/llama-swap/issues/41#issuecomment-2722637867))
+- ✅ llama-server (llama.cpp) supported endpoints:
+  - `v1/rerank`, `v1/reranking`, `/rerank`
+  - `/infill` - for code infilling
+  - `/completion` - for completion endpoint
 - ✅ llama-swap custom API endpoints
   - `/ui` - web UI
   - `/log` - remote log monitoring
   - `/upstream/:model_id` - direct access to upstream HTTP server ([demo](https://github.com/mostlygeek/llama-swap/pull/31))
   - `/unload` - manually unload running models ([#58](https://github.com/mostlygeek/llama-swap/issues/58))
   - `/running` - list currently running models ([#61](https://github.com/mostlygeek/llama-swap/issues/61))
+  - `/health` - just returns "OK"
 - ✅ Run multiple models at once with `Groups` ([#107](https://github.com/mostlygeek/llama-swap/issues/107))
 - ✅ Automatic unloading of models after timeout by setting a `ttl`
 - ✅ Use any local OpenAI compatible server (llama.cpp, vllm, tabbyAPI, etc)
-- ✅ Docker and Podman support
+- ✅ Reliable Docker and Podman support with `cmdStart` and `cmdStop`
 - ✅ Full control over server settings per model
+- ✅ Preload models on startup with `hooks` ([#235](https://github.com/mostlygeek/llama-swap/pull/235))
 
 ## How does llama-swap work?
 
-When a request is made to an OpenAI compatible endpoint, lama-swap will extract the `model` value and load the appropriate server configuration to serve it. If the wrong upstream server is running, it will be replaced with the correct one. This is where the "swap" part comes in. The upstream server is automatically swapped to the correct one to serve the request.
+When a request is made to an OpenAI compatible endpoint, llama-swap will extract the `model` value and load the appropriate server configuration to serve it. If the wrong upstream server is running, it will be replaced with the correct one. This is where the "swap" part comes in. The upstream server is automatically swapped to the correct one to serve the request.
 
 In the most basic configuration llama-swap handles one model at a time. For more advanced use cases, the `groups` feature allows multiple models to be loaded at the same time. You have complete control over how your system resources are used.
 
 ## config.yaml
 
-llama-swap is managed entirely through a yaml configuration file. 
+llama-swap is managed entirely through a yaml configuration file.
 
-It can be very minimal to start: 
+It can be very minimal to start:
 
 ```yaml
 models:
@@ -54,7 +59,7 @@ models:
       --port ${PORT}
 ```
 
-However, there are many more capabilities that llama-swap supports: 
+However, there are many more capabilities that llama-swap supports:
 
 - `groups` to run multiple models at once
 - `ttl` to automatically unload models
@@ -70,14 +75,26 @@ See the [configuration documentation](https://github.com/mostlygeek/llama-swap/w
 
 ## Web UI
 
-llama-swap ships with a real time web interface to monitor logs and status of models:
+llama-swap includes a real time web interface for monitoring logs and models:
 
-<img width="1786" height="1334" alt="image" src="https://github.com/user-attachments/assets/d6258cb9-1dad-40db-828f-2be860aec8fe" />
+<img width="1360" height="963" alt="image" src="https://github.com/user-attachments/assets/adef4a8e-de0b-49db-885a-8f6dedae6799" />
 
+The Activity Page shows recent requests:
 
-## Docker Install ([download images](https://github.com/mostlygeek/llama-swap/pkgs/container/llama-swap))
+<img width="1360" height="963" alt="image" src="https://github.com/user-attachments/assets/5f3edee6-d03a-4ae5-ae06-b20ac1f135bd" />
 
-Docker is the quickest way to try out llama-swap:
+## Installation
+
+llama-swap can be installed in multiple ways
+
+1. Docker
+2. Homebrew (OSX and Linux)
+3. From release binaries
+4. From source
+
+### Docker Install ([download images](https://github.com/mostlygeek/llama-swap/pkgs/container/llama-swap))
+
+Docker images with llama-swap and llama-server are built nightly.
 
 ```shell
 # use CPU inference comes with the example config above
@@ -99,7 +116,7 @@ $ curl -s http://localhost:9292/v1/chat/completions \
 ```
 
 <details>
-<summary>Docker images are built nightly for cuda, intel, vulcan, etc ...</summary>
+<summary>Docker images are built nightly with llama-server for cuda, intel, vulcan and musa.</summary>
 
 They include:
 
@@ -122,12 +139,12 @@ $ docker run -it --rm --runtime nvidia -p 9292:8080 \
 
 </details>
 
-## Homebrew Install (macOS/Linux)
+### Homebrew Install (macOS/Linux)
 
-For macOS & Linux users, `llama-swap` can be installed via [Homebrew](https://brew.sh):
+The latest release of `llama-swap` can be installed via [Homebrew](https://brew.sh).
 
 ```shell
-# Set up tap and install formula 
+# Set up tap and install formula
 brew tap mostlygeek/llama-swap
 brew install llama-swap
 # Run llama-swap
@@ -136,9 +153,9 @@ llama-swap --config path/to/config.yaml --listen localhost:8080
 
 This will install the `llama-swap` binary and make it available in your path. See the [configuration documentation](https://github.com/mostlygeek/llama-swap/wiki/Configuration)
 
-## Bare metal Install ([download](https://github.com/mostlygeek/llama-swap/releases))
+### Pre-built Binaries ([download](https://github.com/mostlygeek/llama-swap/releases))
 
-Pre-built binaries are available for Linux, Mac, Windows and FreeBSD. These are automatically published and are likely a few hours ahead of the docker releases. The baremetal install works with any OpenAI compatible server, not just llama-server.
+Binaries are available for Linux, Mac, Windows and FreeBSD. These are automatically published and are likely a few hours ahead of the docker releases. The binary install works with any OpenAI compatible server, not just llama-server.
 
 1. Download a [release](https://github.com/mostlygeek/llama-swap/releases) appropriate for your OS and architecture.
 1. Create a configuration file, see the [configuration documentation](https://github.com/mostlygeek/llama-swap/wiki/Configuration).
@@ -152,7 +169,7 @@ Pre-built binaries are available for Linux, Mac, Windows and FreeBSD. These are
 ### Building from source
 
 1. Build requires golang and nodejs for the user interface.
-1. `git clone git@github.com:mostlygeek/llama-swap.git`
+1. `git clone https://github.com/mostlygeek/llama-swap.git`
 1. `make clean all`
 1. Binaries will be in `build/` subdirectory
 
@@ -188,13 +205,9 @@ Any OpenAI compatible server would work. llama-swap was originally designed for
 
 For Python based inference servers like vllm or tabbyAPI it is recommended to run them via podman or docker. This provides clean environment isolation as well as responding correctly to `SIGTERM` signals to shutdown.
 
-## Contributors 
-<a href="https://github.com/mostlygeek/llama-swap/graphs/contributors">
-  <img src="https://contrib.rocks/image?repo=mostlygeek/llama-swap" />
-</a>
-
-Made with [contrib.rocks](https://contrib.rocks).
-
 ## Star History
 
+> [!NOTE]
+> ⭐️ Star this project to help others discover it! 
+
 [![Star History Chart](https://api.star-history.com/svg?repos=mostlygeek/llama-swap&type=Date)](https://www.star-history.com/#mostlygeek/llama-swap&Date)

config.example.yaml

@@ -1,9 +1,17 @@
 # llama-swap YAML configuration example
 # -------------------------------------
 #
+# 💡 Tip - Use an LLM with this file!
+# ====================================
+#  This example configuration is written to be LLM friendly. Try
+#  copying this file into an LLM and asking it to explain or generate
+#  sections for you.
+# ====================================
+
+# Usage notes:
 # - Below are all the available configuration options for llama-swap.
-# - Settings with a default value, or noted as optional can be omitted.
-# - Settings that are marked required must be in your configuration file
+# - Settings noted as "required" must be in your configuration file
+# - Settings noted as "optional" can be omitted
 
 # healthCheckTimeout: number of seconds to wait for a model to be ready to serve requests
 # - optional, default: 120
@@ -27,9 +35,9 @@ metricsMaxInMemory: 1000
 # - it is automatically incremented for every model that uses it
 startPort: 10001
 
-# macros: sets a dictionary of string:string pairs
+# macros: a dictionary of string substitutions
 # - optional, default: empty dictionary
-# - these are reusable snippets
+# - macros are reusable snippets
 # - used in a model's cmd, cmdStop, proxy and checkEndpoint
 # - useful for reducing common configuration settings
 macros:
@@ -41,8 +49,8 @@ macros:
 # - required
 # - each key is the model's ID, used in API requests
 # - model settings have default values that are used if they are not defined here
-# - below are examples of the various settings a model can have:
-# - available model settings: env, cmd, cmdStop, proxy, aliases, checkEndpoint, ttl, unlisted
+# - the model's ID is available in the ${MODEL_ID} macro, also available in macros defined above
+# - below are examples of the all the settings a model can have
 models:
 
   # keys are the model names used in API requests
@@ -92,49 +100,60 @@ models:
 
     # checkEndpoint: URL path to check if the server is ready
     # - optional, default: /health
-    # - use "none" to skip endpoint ready checking
     # - endpoint is expected to return an HTTP 200 response
-    # - all requests wait until the endpoint is ready (or fails)
+    # - all requests wait until the endpoint is ready or fails
+    # - use "none" to skip endpoint health checking
     checkEndpoint: /custom-endpoint
 
-    # ttl: automatically unload the model after this many seconds
+    # ttl: automatically unload the model after ttl seconds
     # - optional, default: 0
     # - ttl values must be a value greater than 0
     # - a value of 0 disables automatic unloading of the model
     ttl: 60
 
-    # useModelName: overrides the model name that is sent to upstream server
+    # useModelName: override the model name that is sent to upstream server
     # - optional, default: ""
-    # - useful when the upstream server expects a specific model name or format
+    # - useful for when the upstream server expects a specific model name that
+    #   is different from the model's ID
     useModelName: "qwen:qwq"
 
     # filters: a dictionary of filter settings
     # - optional, default: empty dictionary
+    # - only strip_params is currently supported
     filters:
       # strip_params: a comma separated list of parameters to remove from the request
       # - optional, default: ""
-      # - useful for preventing overriding of default server params by requests
-      # - `model` parameter is never removed
+      # - useful for server side enforcement of sampling parameters
+      # - the `model` parameter can never be removed
       # - can be any JSON key in the request body
       # - recommended to stick to sampling parameters
       strip_params: "temperature, top_p, top_k"
 
+    # concurrencyLimit: overrides the allowed number of active parallel requests to a model
+    # - optional, default: 0
+    # - useful for limiting the number of active parallel requests a model can process
+    # - must be set per model
+    # - any number greater than 0 will override the internal default value of 10
+    # - any requests that exceeds the limit will receive an HTTP 429 Too Many Requests response
+    # - recommended to be omitted and the default used
+    concurrencyLimit: 0
+
   # Unlisted model example:
   "qwen-unlisted":
-    # unlisted: true or false
+    # unlisted: boolean, true or false
     # - optional, default: false
-    # - unlisted models do not show up in /v1/models or /upstream lists
+    # - unlisted models do not show up in /v1/models api requests
     # - can be requested as normal through all apis
     unlisted: true
     cmd: llama-server --port ${PORT} -m Llama-3.2-1B-Instruct-Q4_K_M.gguf -ngl 0
 
   # Docker example:
-  # container run times like Docker and Podman can also be used with a
-  # a combination of cmd and cmdStop.
+  # container runtimes like Docker and Podman can be used reliably with
+  # a combination of cmd, cmdStop, and ${MODEL_ID}
   "docker-llama":
     proxy: "http://127.0.0.1:${PORT}"
     cmd: |
-      docker run --name dockertest
+      docker run --name ${MODEL_ID}
       --init --rm -p ${PORT}:8080 -v /mnt/nvme/models:/models
       ghcr.io/ggml-org/llama.cpp:server
       --model '/models/Qwen2.5-Coder-0.5B-Instruct-Q4_K_M.gguf'
@@ -142,24 +161,26 @@ models:
     # cmdStop: command to run to stop the model gracefully
     # - optional, default: ""
     # - useful for stopping commands managed by another system
-    # - on POSIX systems: a SIGTERM is sent for graceful shutdown
-    # - on Windows, taskkill is used
-    # - processes are given 5 seconds to shutdown until they are forcefully killed
     # - the upstream's process id is available in the ${PID} macro
-    cmdStop: docker stop dockertest
+    #
+    # When empty, llama-swap has this default behaviour:
+    # - on POSIX systems: a SIGTERM signal is sent
+    # - on Windows, calls taskkill to stop the process
+    # - processes have 5 seconds to shutdown until forceful termination is attempted
+    cmdStop: docker stop ${MODEL_ID}
 
 # groups: a dictionary of group settings
 # - optional, default: empty dictionary
-# - provide advanced controls over model swapping behaviour.
-# - Using groups some models can be kept loaded indefinitely, while others are swapped out.
-# - model ids must be defined in the Models section
+# - provides advanced controls over model swapping behaviour
+# - using groups some models can be kept loaded indefinitely, while others are swapped out
+# - model IDs must be defined in the Models section
 # - a model can only be a member of one group
 # - group behaviour is controlled via the `swap`, `exclusive` and `persistent` fields
 # - see issue #109 for details
 #
 # NOTE: the example below uses model names that are not defined above for demonstration purposes
 groups:
-  # group1 is same as the default behaviour of llama-swap where only one model is allowed
+  # group1 works the same as the default behaviour of llama-swap where only one model is allowed
   # to run a time across the whole llama-swap instance
   "group1":
     # swap: controls the model swapping behaviour in within the group
@@ -181,10 +202,13 @@ groups:
       - "qwen-unlisted"
 
   # Example:
-  # - in this group all the models can run at the same time
-  # - when a different group loads all running models in this group are unloaded
+  # - in group2 all models can run at the same time
+  # - when a different group is loaded it causes all running models in this group to unload
   "group2":
     swap: false
+
+    # exclusive: false does not unload other groups when a model in group2 is requested
+    # - the models in group2 will be loaded but will not unload any other groups
     exclusive: false
     members:
       - "docker-llama"
@@ -207,3 +231,19 @@ groups:
       - "forever-modelA"
       - "forever-modelB"
       - "forever-modelc"
+
+# hooks: a dictionary of event triggers and actions
+# - optional, default: empty dictionary
+# - the only supported hook is on_startup
+hooks:
+  # on_startup: a dictionary of actions to perform on startup
+  # - optional, default: empty dictionary
+  # - the only supported action is preload
+  on_startup:
+        # preload: a list of model ids to load on startup
+        # - optional, default: empty list
+        # - model names must match keys in the models sections
+        # - when preloading multiple models at once, define a group
+        #   otherwise models will be loaded and swapped out
+    preload:
+      - "llama"

llama-swap.go

@@ -132,6 +132,11 @@ func main() {
 						event.Emit(proxy.ConfigFileChangedEvent{
 							ReloadingState: proxy.ReloadingStateStart,
 						})
+					} else if changeEvent.Name == filepath.Join(configDir, "..data") && changeEvent.Has(fsnotify.Create) {
+						// the change for k8s configmap
+						event.Emit(proxy.ConfigFileChangedEvent{
+							ReloadingState: proxy.ReloadingStateStart,
+						})
 					}
 
 				case err := <-watcher.Errors:

misc/benchmark-chatcompletion/main.go

@@ -0,0 +1,159 @@
+package main
+
+// created for issue: #252 https://github.com/mostlygeek/llama-swap/issues/252
+// this simple benchmark tool sends a lot of small chat completion requests to llama-swap
+// to make sure all the requests are accounted for.
+//
+// requests can be sent in parallel, and the tool will report the results.
+// usage: go run main.go -baseurl http://localhost:8080/v1 -model llama3 -requests 1000 -par 5
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"sync"
+	"time"
+)
+
+func main() {
+	// ----- CLI arguments ----------------------------------------------------
+	var (
+		baseurl         string
+		modelName       string
+		totalRequests   int
+		parallelization int
+	)
+
+	flag.StringVar(&baseurl, "baseurl", "http://localhost:8080/v1", "Base URL of the API (e.g., https://api.example.com)")
+	flag.StringVar(&modelName, "model", "", "Model name to use")
+	flag.IntVar(&totalRequests, "requests", 1, "Total number of requests to send")
+	flag.IntVar(&parallelization, "par", 1, "Maximum number of concurrent requests")
+	flag.Parse()
+
+	if baseurl == "" || modelName == "" {
+		fmt.Println("Error: both -baseurl and -model are required.")
+		flag.Usage()
+		os.Exit(1)
+	}
+	if totalRequests <= 0 {
+		fmt.Println("Error: -requests must be greater than 0.")
+		os.Exit(1)
+	}
+	if parallelization <= 0 {
+		fmt.Println("Error: -parallelization must be greater than 0.")
+		os.Exit(1)
+	}
+
+	// ----- HTTP client -------------------------------------------------------
+	client := &http.Client{
+		Timeout: 30 * time.Second,
+	}
+
+	// ----- Tracking response codes -------------------------------------------
+	statusCounts := make(map[int]int) // map[statusCode]count
+	var mu sync.Mutex                 // protects statusCounts
+
+	// ----- Request queue (buffered channel) ----------------------------------
+	requests := make(chan int, 10) // Buffered channel with capacity 10
+
+	// Goroutine to fill the request queue
+	go func() {
+		for i := 0; i < totalRequests; i++ {
+			requests <- i + 1
+		}
+		close(requests)
+	}()
+
+	// ----- Worker pool -------------------------------------------------------
+	var wg sync.WaitGroup
+	for i := 0; i < parallelization; i++ {
+		wg.Add(1)
+		go func(workerID int) {
+			defer wg.Done()
+
+			for reqID := range requests {
+				// Build request payload as a single line JSON string
+				payload := `{"model":"` + modelName + `","max_tokens":100,"stream":false,"messages":[{"role":"user","content":"write a snake game in python"}]}`
+
+				// Send POST request
+				req, err := http.NewRequest(http.MethodPost,
+					fmt.Sprintf("%s/chat/completions", baseurl),
+					bytes.NewReader([]byte(payload)))
+				if err != nil {
+					log.Printf("[worker %d][req %d] request creation error: %v", workerID, reqID, err)
+					mu.Lock()
+					statusCounts[-1]++
+					mu.Unlock()
+					continue
+				}
+				req.Header.Set("Content-Type", "application/json")
+
+				resp, err := client.Do(req)
+				if err != nil {
+					log.Printf("[worker %d][req %d] HTTP request error: %v", workerID, reqID, err)
+					mu.Lock()
+					statusCounts[-1]++
+					mu.Unlock()
+					continue
+				}
+				io.Copy(io.Discard, resp.Body)
+				resp.Body.Close()
+
+				// Record status code
+				mu.Lock()
+				statusCounts[resp.StatusCode]++
+				mu.Unlock()
+			}
+		}(i + 1)
+	}
+
+	// ----- Status ticker (prints every second) -------------------------------
+	done := make(chan struct{})
+	tickerDone := make(chan struct{})
+	go func() {
+		ticker := time.NewTicker(1 * time.Second)
+		startTime := time.Now()
+		for {
+			select {
+			case <-ticker.C:
+				mu.Lock()
+				// Compute how many requests have completed so far
+				completed := 0
+				for _, cnt := range statusCounts {
+					completed += cnt
+				}
+				// Calculate duration and progress
+				duration := time.Since(startTime)
+				progress := completed * 100 / totalRequests
+				fmt.Printf("Duration: %v, Completed: %d%% requests\n", duration, progress)
+				mu.Unlock()
+			case <-done:
+				duration := time.Since(startTime)
+				fmt.Printf("Duration: %v, Completed: %d%% requests\n", duration, 100)
+				close(tickerDone)
+				return
+			}
+		}
+	}()
+
+	// Wait for all workers to finish
+	wg.Wait()
+	close(done)  // stops the status-update goroutine
+	<-tickerDone // give ticker time to finish / print
+
+	// ----- Summary ------------------------------------------------------------
+	fmt.Println("\n\n=== HTTP response code summary ===")
+	mu.Lock()
+	for code, cnt := range statusCounts {
+		if code == -1 {
+			fmt.Printf("Client-side errors (no HTTP response): %d\n", cnt)
+		} else {
+			fmt.Printf("%d : %d\n", code, cnt)
+		}
+	}
+	mu.Unlock()
+}

misc/simple-responder/simple-responder.go

@@ -153,6 +153,19 @@ func main() {
 
 	})
 
+	// llama-server compatibility: /completion
+	r.POST("/completion", func(c *gin.Context) {
+		c.Header("Content-Type", "application/json")
+		c.JSON(http.StatusOK, gin.H{
+			"responseMessage": *responseMessage,
+			"usage": gin.H{
+				"completion_tokens": 10,
+				"prompt_tokens":     25,
+				"total_tokens":      35,
+			},
+		})
+	})
+
 	// issue #41
 	r.POST("/v1/audio/transcriptions", func(c *gin.Context) {
 		// Parse the multipart form

proxy/config.go

@@ -138,6 +138,14 @@ func (c *GroupConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	return nil
 }
 
+type HooksConfig struct {
+	OnStartup HookOnStartup `yaml:"on_startup"`
+}
+
+type HookOnStartup struct {
+	Preload []string `yaml:"preload"`
+}
+
 type Config struct {
 	HealthCheckTimeout int                    `yaml:"healthCheckTimeout"`
 	LogRequests        bool                   `yaml:"logRequests"`
@@ -155,6 +163,9 @@ type Config struct {
 
 	// automatic port assignments
 	StartPort int `yaml:"startPort"`
+
+	// hooks, see: #209
+	Hooks HooksConfig `yaml:"hooks"`
 }
 
 func (c *Config) RealModelName(search string) (string, bool) {
@@ -226,7 +237,7 @@ func LoadConfigFromReader(r io.Reader) (Config, error) {
 
 	- name must fit the regex ^[a-zA-Z0-9_-]+$
 	- names must be less than 64 characters (no reason, just cause)
-	- name can not be any reserved macros: PORT
+	- name can not be any reserved macros: PORT, MODEL_ID
 	- macro values must be less than 1024 characters
 	*/
 	macroNameRegex := regexp.MustCompile(`^[a-zA-Z0-9_-]+$`)
@@ -242,6 +253,7 @@ func LoadConfigFromReader(r io.Reader) (Config, error) {
 		}
 		switch macroName {
 		case "PORT":
+		case "MODEL_ID":
 			return Config{}, fmt.Errorf("macro name '%s' is reserved and cannot be used", macroName)
 		}
 	}
@@ -285,6 +297,11 @@ func LoadConfigFromReader(r io.Reader) (Config, error) {
 			nextPort++
 		}
 
+		if strings.Contains(modelConfig.Cmd, "${MODEL_ID}") || strings.Contains(modelConfig.CmdStop, "${MODEL_ID}") {
+			modelConfig.Cmd = strings.ReplaceAll(modelConfig.Cmd, "${MODEL_ID}", modelId)
+			modelConfig.CmdStop = strings.ReplaceAll(modelConfig.CmdStop, "${MODEL_ID}", modelId)
+		}
+
 		// make sure there are no unknown macros that have not been replaced
 		macroPattern := regexp.MustCompile(`\$\{([a-zA-Z0-9_-]+)\}`)
 		fieldMap := map[string]string{
@@ -330,6 +347,22 @@ func LoadConfigFromReader(r io.Reader) (Config, error) {
 		}
 	}
 
+	// clean up hooks preload
+	if len(config.Hooks.OnStartup.Preload) > 0 {
+		var toPreload []string
+		for _, modelID := range config.Hooks.OnStartup.Preload {
+			modelID = strings.TrimSpace(modelID)
+			if modelID == "" {
+				continue
+			}
+			if real, found := config.RealModelName(modelID); found {
+				toPreload = append(toPreload, real)
+			}
+		}
+
+		config.Hooks.OnStartup.Preload = toPreload
+	}
+
 	return config, nil
 }
 

proxy/config_posix_test.go

@@ -100,6 +100,9 @@ func TestConfig_LoadPosix(t *testing.T) {
 	content := `
 macros:
   svr-path: "path/to/server"
+hooks:
+  on_startup:
+    preload: ["model1", "model2"]
 models:
   model1:
     cmd: path/to/cmd --arg1 one
@@ -163,6 +166,11 @@ groups:
 		Macros: map[string]string{
 			"svr-path": "path/to/server",
 		},
+		Hooks: HooksConfig{
+			OnStartup: HookOnStartup{
+				Preload: []string{"model1", "model2"},
+			},
+		},
 		Models: map[string]ModelConfig{
 			"model1": {
 				Cmd:           "path/to/cmd --arg1 one",

proxy/config_test.go

@@ -440,3 +440,44 @@ models:
 	expectedCmd := "/user/llama.cpp/build/bin/llama-server --port 9990 --model /path/to/model.gguf -ngl 99"
 	assert.Equal(t, expectedCmd, cmdStr, "Final command does not match expected structure")
 }
+
+func TestConfig_MacroModelId(t *testing.T) {
+	content := `
+startPort: 9000
+macros:
+  "docker-llama": docker run --name ${MODEL_ID} -p ${PORT}:8080 docker_img
+  "docker-stop": docker stop ${MODEL_ID}
+
+models:
+  model1:
+    cmd: /path/to/server -p ${PORT} -hf ${MODEL_ID}
+
+  model2:
+    cmd: ${docker-llama}
+    cmdStop: ${docker-stop}
+
+  author/model:F16:
+    cmd: /path/to/server -p ${PORT} -hf ${MODEL_ID}
+    cmdStop: stop
+`
+
+	config, err := LoadConfigFromReader(strings.NewReader(content))
+	assert.NoError(t, err)
+	sanitizedCmd, err := SanitizeCommand(config.Models["model1"].Cmd)
+	assert.NoError(t, err)
+	assert.Equal(t, "/path/to/server -p 9001 -hf model1", strings.Join(sanitizedCmd, " "))
+
+	assert.Equal(t, "docker stop ${MODEL_ID}", config.Macros["docker-stop"])
+
+	sanitizedCmd2, err := SanitizeCommand(config.Models["model2"].Cmd)
+	assert.NoError(t, err)
+	assert.Equal(t, "docker run --name model2 -p 9002:8080 docker_img", strings.Join(sanitizedCmd2, " "))
+
+	sanitizedCmdStop, err := SanitizeCommand(config.Models["model2"].CmdStop)
+	assert.NoError(t, err)
+	assert.Equal(t, "docker stop model2", strings.Join(sanitizedCmdStop, " "))
+
+	sanitizedCmd3, err := SanitizeCommand(config.Models["author/model:F16"].Cmd)
+	assert.NoError(t, err)
+	assert.Equal(t, "/path/to/server -p 9000 -hf author/model:F16", strings.Join(sanitizedCmd3, " "))
+}

proxy/discardWriter.go

@@ -0,0 +1,27 @@
+package proxy
+
+import "net/http"
+
+// Custom discard writer that implements http.ResponseWriter but just discards everything
+type DiscardWriter struct {
+	header http.Header
+	status int
+}
+
+func (w *DiscardWriter) Header() http.Header {
+	if w.header == nil {
+		w.header = make(http.Header)
+	}
+	return w.header
+}
+
+func (w *DiscardWriter) Write(data []byte) (int, error) {
+	return len(data), nil
+}
+
+func (w *DiscardWriter) WriteHeader(code int) {
+	w.status = code
+}
+
+// Satisfy the http.Flusher interface for streaming responses
+func (w *DiscardWriter) Flush() {}

proxy/events.go

@@ -7,6 +7,7 @@ const ChatCompletionStatsEventID = 0x02
 const ConfigFileChangedEventID = 0x03
 const LogDataEventID = 0x04
 const TokenMetricsEventID = 0x05
+const ModelPreloadedEventID = 0x06
 
 type ProcessStateChangeEvent struct {
 	ProcessName string
@@ -48,3 +49,12 @@ type LogDataEvent struct {
 func (e LogDataEvent) Type() uint32 {
 	return LogDataEventID
 }
+
+type ModelPreloadedEvent struct {
+	ModelName string
+	Success   bool
+}
+
+func (e ModelPreloadedEvent) Type() uint32 {
+	return ModelPreloadedEventID
+}

proxy/helpers_test.go

@@ -13,9 +13,10 @@ import (
 )
 
 var (
-	nextTestPort int = 12000
-	portMutex    sync.Mutex
-	testLogger   = NewLogMonitorWriter(os.Stdout)
+	nextTestPort        int = 12000
+	portMutex           sync.Mutex
+	testLogger          = NewLogMonitorWriter(os.Stdout)
+	simpleResponderPath = getSimpleResponderPath()
 )
 
 // Check if the binary exists
@@ -69,13 +70,11 @@ func getTestSimpleResponderConfig(expectedMessage string) ModelConfig {
 }
 
 func getTestSimpleResponderConfigPort(expectedMessage string, port int) ModelConfig {
-	binaryPath := getSimpleResponderPath()
-
 	// Create a YAML string with just the values we want to set
 	yamlStr := fmt.Sprintf(`
 cmd: '%s --port %d --silent --respond %s'
 proxy: "http://127.0.0.1:%d"
-`, binaryPath, port, expectedMessage, port)
+`, simpleResponderPath, port, expectedMessage, port)
 
 	var cfg ModelConfig
 	if err := yaml.Unmarshal([]byte(yamlStr), &cfg); err != nil {

proxy/metrics_middleware.go

@@ -5,12 +5,20 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"strings"
 	"time"
 
 	"github.com/gin-gonic/gin"
 	"github.com/tidwall/gjson"
 )
 
+type MetricsRecorder struct {
+	metricsMonitor *MetricsMonitor
+	realModelName  string
+	//	isStreaming    bool
+	startTime time.Time
+}
+
 // MetricsMiddleware sets up the MetricsResponseWriter for capturing upstream requests
 func MetricsMiddleware(pm *ProxyManager) gin.HandlerFunc {
 	return func(c *gin.Context) {
@@ -41,48 +49,48 @@ func MetricsMiddleware(pm *ProxyManager) gin.HandlerFunc {
 			metricsRecorder: &MetricsRecorder{
 				metricsMonitor: pm.metricsMonitor,
 				realModelName:  realModelName,
-				isStreaming:    gjson.GetBytes(bodyBytes, "stream").Bool(),
 				startTime:      time.Now(),
 			},
 		}
 		c.Writer = writer
 		c.Next()
 
-		rec := writer.metricsRecorder
-		rec.processBody(writer.body)
-	}
-}
+		// check for streaming response
+		if strings.Contains(c.Writer.Header().Get("Content-Type"), "text/event-stream") {
+			writer.metricsRecorder.processStreamingResponse(writer.body)
+		} else {
+			writer.metricsRecorder.processNonStreamingResponse(writer.body)
+		}
 
-type MetricsRecorder struct {
-	metricsMonitor *MetricsMonitor
-	realModelName  string
-	isStreaming    bool
-	startTime      time.Time
-}
-
-// processBody handles response processing after request completes
-func (rec *MetricsRecorder) processBody(body []byte) {
-	if rec.isStreaming {
-		rec.processStreamingResponse(body)
-	} else {
-		rec.processNonStreamingResponse(body)
 	}
 }
 
 func (rec *MetricsRecorder) parseAndRecordMetrics(jsonData gjson.Result) bool {
 	usage := jsonData.Get("usage")
-	if !usage.Exists() {
+	timings := jsonData.Get("timings")
+	if !usage.Exists() && !timings.Exists() {
 		return false
 	}
 
 	// default values
-	outputTokens := int(jsonData.Get("usage.completion_tokens").Int())
-	inputTokens := int(jsonData.Get("usage.prompt_tokens").Int())
+	outputTokens := 0
+	inputTokens := 0
+
+	// timings data
 	tokensPerSecond := -1.0
+	promptPerSecond := -1.0
 	durationMs := int(time.Since(rec.startTime).Milliseconds())
 
+	if usage.Exists() {
+		outputTokens = int(jsonData.Get("usage.completion_tokens").Int())
+		inputTokens = int(jsonData.Get("usage.prompt_tokens").Int())
+	}
+
 	// use llama-server's timing data for tok/sec and duration as it is more accurate
-	if timings := jsonData.Get("timings"); timings.Exists() {
+	if timings.Exists() {
+		inputTokens = int(jsonData.Get("timings.prompt_n").Int())
+		outputTokens = int(jsonData.Get("timings.predicted_n").Int())
+		promptPerSecond = jsonData.Get("timings.prompt_per_second").Float()
 		tokensPerSecond = jsonData.Get("timings.predicted_per_second").Float()
 		durationMs = int(jsonData.Get("timings.prompt_ms").Float() + jsonData.Get("timings.predicted_ms").Float())
 	}
@@ -92,6 +100,7 @@ func (rec *MetricsRecorder) parseAndRecordMetrics(jsonData gjson.Result) bool {
 		Model:           rec.realModelName,
 		InputTokens:     inputTokens,
 		OutputTokens:    outputTokens,
+		PromptPerSecond: promptPerSecond,
 		TokensPerSecond: tokensPerSecond,
 		DurationMs:      durationMs,
 	})

proxy/metrics_monitor.go

@@ -15,6 +15,7 @@ type TokenMetrics struct {
 	Model           string    `json:"model"`
 	InputTokens     int       `json:"input_tokens"`
 	OutputTokens    int       `json:"output_tokens"`
+	PromptPerSecond float64   `json:"prompt_per_second"`
 	TokensPerSecond float64   `json:"tokens_per_second"`
 	DurationMs      int       `json:"duration_ms"`
 }

proxy/process.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"net/url"
 	"os/exec"
@@ -363,8 +364,18 @@ func (p *Process) stopCommand() {
 }
 
 func (p *Process) checkHealthEndpoint(healthURL string) error {
+
 	client := &http.Client{
-		Timeout: 500 * time.Millisecond,
+		// wait a short time for a tcp connection to be established
+		Transport: &http.Transport{
+			DialContext: (&net.Dialer{
+				Timeout: 500 * time.Millisecond,
+			}).DialContext,
+		},
+
+		// give a long time to respond to the health check endpoint
+		// after the connection is established. See issue: 276
+		Timeout: 5000 * time.Millisecond,
 	}
 
 	req, err := http.NewRequest("GET", healthURL, nil)

proxy/processgroup.go

@@ -60,10 +60,20 @@ func (pg *ProcessGroup) ProxyRequest(modelID string, writer http.ResponseWriter,
 	if pg.swap {
 		pg.Lock()
 		if pg.lastUsedProcess != modelID {
+
+			// is there something already running?
 			if pg.lastUsedProcess != "" {
 				pg.processes[pg.lastUsedProcess].Stop()
 			}
+
+			// wait for the request to the new model to be fully handled
+			// and prevent race conditions see issue #277
+			pg.processes[modelID].ProxyRequest(writer, request)
 			pg.lastUsedProcess = modelID
+
+			// short circuit and exit
+			pg.Unlock()
+			return nil
 		}
 		pg.Unlock()
 	}

proxy/processgroup_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"net/http"
 	"net/http/httptest"
+	"sync"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -44,32 +45,49 @@ func TestProcessGroup_HasMember(t *testing.T) {
 	assert.False(t, pg.HasMember("model3"))
 }
 
-func TestProcessGroup_ProxyRequestSwapIsTrue(t *testing.T) {
+// TestProcessGroup_ProxyRequestSwapIsTrueParallel tests that when swap is true
+// and multiple requests are made in parallel, only one process is running at a time.
+func TestProcessGroup_ProxyRequestSwapIsTrueParallel(t *testing.T) {
+	var processGroupTestConfig = AddDefaultGroupToConfig(Config{
+		HealthCheckTimeout: 15,
+		Models: map[string]ModelConfig{
+			// use the same listening so if a model is already running, it will fail
+			// this is a way to test that swap isolation is working
+			// properly when there are parallel requests made at the
+			// same time.
+			"model1": getTestSimpleResponderConfigPort("model1", 9832),
+			"model2": getTestSimpleResponderConfigPort("model2", 9832),
+			"model3": getTestSimpleResponderConfigPort("model3", 9832),
+			"model4": getTestSimpleResponderConfigPort("model4", 9832),
+			"model5": getTestSimpleResponderConfigPort("model5", 9832),
+		},
+		Groups: map[string]GroupConfig{
+			"G1": {
+				Swap:    true,
+				Members: []string{"model1", "model2", "model3", "model4", "model5"},
+			},
+		},
+	})
+
 	pg := NewProcessGroup("G1", processGroupTestConfig, testLogger, testLogger)
 	defer pg.StopProcesses(StopWaitForInflightRequest)
 
-	tests := []string{"model1", "model2"}
+	tests := []string{"model1", "model2", "model3", "model4", "model5"}
 
+	var wg sync.WaitGroup
+
+	wg.Add(len(tests))
 	for _, modelName := range tests {
-		t.Run(modelName, func(t *testing.T) {
-			reqBody := `{"x", "y"}`
-			req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
+		go func(modelName string) {
+			defer wg.Done()
+			req := httptest.NewRequest("POST", "/v1/chat/completions", nil)
 			w := httptest.NewRecorder()
-
 			assert.NoError(t, pg.ProxyRequest(modelName, w, req))
 			assert.Equal(t, http.StatusOK, w.Code)
 			assert.Contains(t, w.Body.String(), modelName)
-
-			// make sure only one process is in the running state
-			count := 0
-			for _, process := range pg.processes {
-				if process.CurrentState() == StateReady {
-					count++
-				}
-			}
-			assert.Equal(t, 1, count)
-		})
+		}(modelName)
 	}
+	wg.Wait()
 }
 
 func TestProcessGroup_ProxyRequestSwapIsFalse(t *testing.T) {

proxy/proxymanager.go

@@ -8,12 +8,14 @@ import (
 	"mime/multipart"
 	"net/http"
 	"os"
+	"sort"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/gin-gonic/gin"
+	"github.com/mostlygeek/llama-swap/event"
 	"github.com/tidwall/gjson"
 	"github.com/tidwall/sjson"
 )
@@ -95,6 +97,35 @@ func New(config Config) *ProxyManager {
 	}
 
 	pm.setupGinEngine()
+
+	// run any startup hooks
+	if len(config.Hooks.OnStartup.Preload) > 0 {
+		// do it in the background, don't block startup -- not sure if good idea yet
+		go func() {
+			discardWriter := &DiscardWriter{}
+			for _, realModelName := range config.Hooks.OnStartup.Preload {
+				proxyLogger.Infof("Preloading model: %s", realModelName)
+				processGroup, _, err := pm.swapProcessGroup(realModelName)
+
+				if err != nil {
+					event.Emit(ModelPreloadedEvent{
+						ModelName: realModelName,
+						Success:   false,
+					})
+					proxyLogger.Errorf("Failed to preload model %s: %v", realModelName, err)
+					continue
+				} else {
+					req, _ := http.NewRequest("GET", "/", nil)
+					processGroup.ProxyRequest(realModelName, discardWriter, req)
+					event.Emit(ModelPreloadedEvent{
+						ModelName: realModelName,
+						Success:   true,
+					})
+				}
+			}
+		}()
+	}
+
 	return pm
 }
 
@@ -160,11 +191,20 @@ func (pm *ProxyManager) setupGinEngine() {
 	// Support legacy /v1/completions api, see issue #12
 	pm.ginEngine.POST("/v1/completions", mm, pm.proxyOAIHandler)
 
-	// Support embeddings
+	// Support embeddings and reranking
 	pm.ginEngine.POST("/v1/embeddings", mm, pm.proxyOAIHandler)
+
+	// llama-server's /reranking endpoint + aliases
+	pm.ginEngine.POST("/reranking", mm, pm.proxyOAIHandler)
+	pm.ginEngine.POST("/rerank", mm, pm.proxyOAIHandler)
 	pm.ginEngine.POST("/v1/rerank", mm, pm.proxyOAIHandler)
 	pm.ginEngine.POST("/v1/reranking", mm, pm.proxyOAIHandler)
-	pm.ginEngine.POST("/rerank", mm, pm.proxyOAIHandler)
+
+	// llama-server's /infill endpoint for code infilling
+	pm.ginEngine.POST("/infill", mm, pm.proxyOAIHandler)
+
+	// llama-server's /completion endpoint
+	pm.ginEngine.POST("/completion", mm, pm.proxyOAIHandler)
 
 	// Support audio/speech endpoint
 	pm.ginEngine.POST("/v1/audio/speech", pm.proxyOAIHandler)
@@ -333,6 +373,13 @@ func (pm *ProxyManager) listModelsHandler(c *gin.Context) {
 		data = append(data, record)
 	}
 
+	// Sort by the "id" key
+	sort.Slice(data, func(i, j int) bool {
+		si, _ := data[i]["id"].(string)
+		sj, _ := data[j]["id"].(string)
+		return si < sj
+	})
+
 	// Set CORS headers if origin exists
 	if origin := c.GetHeader("Origin"); origin != "" {
 		c.Header("Access-Control-Allow-Origin", origin)
@@ -353,7 +400,7 @@ func (pm *ProxyManager) proxyToUpstream(c *gin.Context) {
 		return
 	}
 
-	processGroup, _, err := pm.swapProcessGroup(requestedModel)
+	processGroup, realModelName, err := pm.swapProcessGroup(requestedModel)
 	if err != nil {
 		pm.sendErrorResponse(c, http.StatusInternalServerError, fmt.Sprintf("error swapping process group: %s", err.Error()))
 		return
@@ -361,7 +408,7 @@ func (pm *ProxyManager) proxyToUpstream(c *gin.Context) {
 
 	// rewrite the path
 	c.Request.URL.Path = c.Param("upstreamPath")
-	processGroup.ProxyRequest(requestedModel, c.Writer, c.Request)
+	processGroup.ProxyRequest(realModelName, c.Writer, c.Request)
 }
 
 func (pm *ProxyManager) proxyOAIHandler(c *gin.Context) {

proxy/proxymanager_api.go

@@ -132,7 +132,7 @@ func (pm *ProxyManager) apiSendEvents(c *gin.Context) {
 		}
 	}
 
-	sendMetrics := func(metrics TokenMetrics) {
+	sendMetrics := func(metrics []TokenMetrics) {
 		jsonData, err := json.Marshal(metrics)
 		if err == nil {
 			select {
@@ -168,16 +168,14 @@ func (pm *ProxyManager) apiSendEvents(c *gin.Context) {
 	 * Send Metrics data
 	 */
 	defer event.On(func(e TokenMetricsEvent) {
-		sendMetrics(e.Metrics)
+		sendMetrics([]TokenMetrics{e.Metrics})
 	})()
 
 	// send initial batch of data
 	sendLogData("proxy", pm.proxyLogger.GetHistory())
 	sendLogData("upstream", pm.upstreamLogger.GetHistory())
 	sendModels()
-	for _, metrics := range pm.metricsMonitor.GetMetrics() {
-		sendMetrics(metrics)
-	}
+	sendMetrics(pm.metricsMonitor.GetMetrics())
 
 	for {
 		select {

proxy/proxymanager_test.go

@@ -9,10 +9,12 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"strconv"
+	"strings"
 	"sync"
 	"testing"
 	"time"
 
+	"github.com/mostlygeek/llama-swap/event"
 	"github.com/stretchr/testify/assert"
 	"github.com/tidwall/gjson"
 )
@@ -40,7 +42,6 @@ func TestProxyManager_SwapProcessCorrectly(t *testing.T) {
 		assert.Contains(t, w.Body.String(), modelName)
 	}
 }
-
 func TestProxyManager_SwapMultiProcess(t *testing.T) {
 	config := AddDefaultGroupToConfig(Config{
 		HealthCheckTimeout: 15,
@@ -279,6 +280,51 @@ func TestProxyManager_ListModelsHandler(t *testing.T) {
 	assert.Empty(t, expectedModels, "not all expected models were returned")
 }
 
+func TestProxyManager_ListModelsHandler_SortedByID(t *testing.T) {
+	// Intentionally add models in non-sorted order and with an unlisted model
+	config := Config{
+		HealthCheckTimeout: 15,
+		Models: map[string]ModelConfig{
+			"zeta":  getTestSimpleResponderConfig("zeta"),
+			"alpha": getTestSimpleResponderConfig("alpha"),
+			"beta":  getTestSimpleResponderConfig("beta"),
+			"hidden": func() ModelConfig {
+				mc := getTestSimpleResponderConfig("hidden")
+				mc.Unlisted = true
+				return mc
+			}(),
+		},
+		LogLevel: "error",
+	}
+
+	proxy := New(config)
+
+	// Request models list
+	req := httptest.NewRequest("GET", "/v1/models", nil)
+	w := httptest.NewRecorder()
+	proxy.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var response struct {
+		Data []map[string]interface{} `json:"data"`
+	}
+	if err := json.Unmarshal(w.Body.Bytes(), &response); err != nil {
+		t.Fatalf("Failed to parse JSON response: %v", err)
+	}
+
+	// We expect only the listed models in sorted order by id
+	expectedOrder := []string{"alpha", "beta", "zeta"}
+	if assert.Len(t, response.Data, len(expectedOrder), "unexpected number of listed models") {
+		got := make([]string, 0, len(response.Data))
+		for _, m := range response.Data {
+			id, _ := m["id"].(string)
+			got = append(got, id)
+		}
+		assert.Equal(t, expectedOrder, got, "models should be sorted by id ascending")
+	}
+}
+
 func TestProxyManager_Shutdown(t *testing.T) {
 	// make broken model configurations
 	model1Config := getTestSimpleResponderConfigPort("model1", 9991)
@@ -611,21 +657,34 @@ func TestProxyManager_CORSOptionsHandler(t *testing.T) {
 }
 
 func TestProxyManager_Upstream(t *testing.T) {
-	config := AddDefaultGroupToConfig(Config{
-		HealthCheckTimeout: 15,
-		Models: map[string]ModelConfig{
-			"model1": getTestSimpleResponderConfig("model1"),
-		},
-		LogLevel: "error",
-	})
+	configStr := fmt.Sprintf(`
+logLevel: error
+models:
+  model1:
+    cmd: %s -port ${PORT} -silent -respond model1
+    aliases: [model-alias]
+`, getSimpleResponderPath())
+
+	config, err := LoadConfigFromReader(strings.NewReader(configStr))
+	assert.NoError(t, err)
 
 	proxy := New(config)
 	defer proxy.StopProcesses(StopWaitForInflightRequest)
-	req := httptest.NewRequest("GET", "/upstream/model1/test", nil)
-	rec := httptest.NewRecorder()
-	proxy.ServeHTTP(rec, req)
-	assert.Equal(t, http.StatusOK, rec.Code)
-	assert.Equal(t, "model1", rec.Body.String())
+	t.Run("main model name", func(t *testing.T) {
+		req := httptest.NewRequest("GET", "/upstream/model1/test", nil)
+		rec := httptest.NewRecorder()
+		proxy.ServeHTTP(rec, req)
+		assert.Equal(t, http.StatusOK, rec.Code)
+		assert.Equal(t, "model1", rec.Body.String())
+	})
+
+	t.Run("model alias", func(t *testing.T) {
+		req := httptest.NewRequest("GET", "/upstream/model-alias/test", nil)
+		rec := httptest.NewRecorder()
+		proxy.ServeHTTP(rec, req)
+		assert.Equal(t, http.StatusOK, rec.Code)
+		assert.Equal(t, "model1", rec.Body.String())
+	})
 }
 
 func TestProxyManager_ChatContentLength(t *testing.T) {
@@ -773,3 +832,84 @@ func TestProxyManager_HealthEndpoint(t *testing.T) {
 	assert.Equal(t, http.StatusOK, rec.Code)
 	assert.Equal(t, "OK", rec.Body.String())
 }
+
+// Ensure the custom llama-server /completion endpoint proxies correctly
+func TestProxyManager_CompletionEndpoint(t *testing.T) {
+	config := AddDefaultGroupToConfig(Config{
+		HealthCheckTimeout: 15,
+		Models: map[string]ModelConfig{
+			"model1": getTestSimpleResponderConfig("model1"),
+		},
+		LogLevel: "error",
+	})
+
+	proxy := New(config)
+	defer proxy.StopProcesses(StopWaitForInflightRequest)
+
+	reqBody := `{"model":"model1"}`
+	req := httptest.NewRequest("POST", "/completion", bytes.NewBufferString(reqBody))
+	w := httptest.NewRecorder()
+
+	proxy.ServeHTTP(w, req)
+	assert.Equal(t, http.StatusOK, w.Code)
+	assert.Contains(t, w.Body.String(), "model1")
+}
+
+func TestProxyManager_StartupHooks(t *testing.T) {
+
+	// using real YAML as the configuration has gotten more complex
+	// is the right approach as LoadConfigFromReader() does a lot more
+	// than parse YAML now. Eventually migrate all tests to use this approach
+	configStr := strings.Replace(`
+logLevel: error
+hooks:
+  on_startup:
+    preload:
+      - model1
+      - model2
+groups:
+  preloadTestGroup:
+    swap: false
+    members:
+       - model1
+       - model2
+models:
+  model1:
+    cmd: ${simpleresponderpath} --port ${PORT} --silent --respond model1
+  model2:
+      cmd: ${simpleresponderpath} --port ${PORT} --silent --respond model2
+`, "${simpleresponderpath}", simpleResponderPath, -1)
+
+	// Create a test model configuration
+	config, err := LoadConfigFromReader(strings.NewReader(configStr))
+	if !assert.NoError(t, err, "Invalid configuration") {
+		return
+	}
+
+	preloadChan := make(chan ModelPreloadedEvent, 2) // buffer for 2 expected events
+
+	unsub := event.On(func(e ModelPreloadedEvent) {
+		preloadChan <- e
+	})
+
+	defer unsub()
+
+	// Create the proxy which should trigger preloading
+	proxy := New(config)
+	defer proxy.StopProcesses(StopWaitForInflightRequest)
+
+	for i := 0; i < 2; i++ {
+		select {
+		case <-preloadChan:
+		case <-time.After(5 * time.Second):
+			t.Fatal("timed out waiting for models to preload")
+		}
+	}
+	// make sure they are both loaded
+	_, foundGroup := proxy.processGroups["preloadTestGroup"]
+	if !assert.True(t, foundGroup, "preloadTestGroup should exist") {
+		return
+	}
+	assert.Equal(t, StateReady, proxy.processGroups["preloadTestGroup"].processes["model1"].CurrentState())
+	assert.Equal(t, StateReady, proxy.processGroups["preloadTestGroup"].processes["model2"].CurrentState())
+}

ui/package-lock.json

@@ -12,6 +12,8 @@
         "@tanstack/react-query": "^5.80.6",
         "react": "^19.1.0",
         "react-dom": "^19.1.0",
+        "react-icons": "^5.5.0",
+        "react-resizable-panels": "^3.0.4",
         "react-router-dom": "^7.6.2",
         "tailwindcss": "^4.1.8"
       },
@@ -3460,6 +3462,15 @@
         "react": "^19.1.0"
       }
     },
+    "node_modules/react-icons": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/react-icons/-/react-icons-5.5.0.tgz",
+      "integrity": "sha512-MEFcXdkP3dLo8uumGI5xN3lDFNsRtrjbOEKDLD7yv76v4wpnEq2Lt2qeHaQOr34I/wPN3s3+N08WkQ+CW37Xiw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "*"
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.17.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.17.0.tgz",
@@ -3470,6 +3481,16 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/react-resizable-panels": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/react-resizable-panels/-/react-resizable-panels-3.0.4.tgz",
+      "integrity": "sha512-8Y4KNgV94XhUvI2LeByyPIjoUJb71M/0hyhtzkHaqpVHs+ZQs8b627HmzyhmVYi3C9YP6R+XD1KmG7hHjEZXFQ==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.14.0 || ^17.0.0 || ^18.0.0 || ^19.0.0 || ^19.0.0-rc",
+        "react-dom": "^16.14.0 || ^17.0.0 || ^18.0.0 || ^19.0.0 || ^19.0.0-rc"
+      }
+    },
     "node_modules/react-router": {
       "version": "7.6.2",
       "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.6.2.tgz",

ui/package.json

@@ -14,6 +14,8 @@
     "@tanstack/react-query": "^5.80.6",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
+    "react-icons": "^5.5.0",
+    "react-resizable-panels": "^3.0.4",
     "react-router-dom": "^7.6.2",
     "tailwindcss": "^4.1.8"
   },
@@ -30,4 +32,4 @@
     "typescript-eslint": "^8.30.1",
     "vite": "^6.3.5"
   }
-}
+}

ui/src/App.tsx

@@ -1,48 +1,78 @@
+import { useEffect, useCallback } from "react";
 import { BrowserRouter as Router, Routes, Route, Navigate, NavLink } from "react-router-dom";
 import { useTheme } from "./contexts/ThemeProvider";
-import { APIProvider } from "./contexts/APIProvider";
+import { useAPI } from "./contexts/APIProvider";
 import LogViewerPage from "./pages/LogViewer";
 import ModelPage from "./pages/Models";
 import ActivityPage from "./pages/Activity";
+import ConnectionStatusIcon from "./components/ConnectionStatus";
+import { RiSunFill, RiMoonFill } from "react-icons/ri";
 
 function App() {
-  const theme = useTheme();
+  const { isNarrow, toggleTheme, isDarkMode, appTitle, setAppTitle, setConnectionState } = useTheme();
+  const handleTitleChange = useCallback(
+    (newTitle: string) => {
+      setAppTitle(newTitle.replace(/\n/g, "").trim().substring(0, 64) || "llama-swap");
+    },
+    [setAppTitle]
+  );
+
+  const { connectionStatus } = useAPI();
+
+  // Synchronize the window.title connections state with the actual connection state
+  useEffect(() => {
+    setConnectionState(connectionStatus);
+  }, [connectionStatus]);
+
   return (
     <Router basename="/ui/">
-      <APIProvider>
-        <div>
-          <nav className="bg-surface border-b border-border p-2 h-[75px]">
-            <div className="flex items-center justify-between mx-auto px-4 h-full">
-              <h1 className="flex items-center p-0">llama-swap</h1>
-              <div className="flex items-center space-x-4">
-                <NavLink to="/" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
-                  Logs
-                </NavLink>
-
-                <NavLink to="/models" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
-                  Models
-                </NavLink>
-
-                <NavLink to="/activity" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
-                  Activity
-                </NavLink>
-                <button className="btn btn--sm" onClick={theme.toggleTheme}>
-                  {theme.isDarkMode ? "🌙" : "☀️"}
-                </button>
-              </div>
+      <div className="flex flex-col h-screen">
+        <nav className="bg-surface border-b border-border p-2 h-[75px]">
+          <div className="flex items-center justify-between mx-auto px-4 h-full">
+            {!isNarrow && (
+              <h1
+                contentEditable
+                suppressContentEditableWarning
+                className="flex items-center p-0 outline-none hover:bg-gray-100 dark:hover:bg-gray-700 rounded px-1"
+                onBlur={(e) => handleTitleChange(e.currentTarget.textContent || "(set title)")}
+                onKeyDown={(e) => {
+                  if (e.key === "Enter") {
+                    e.preventDefault();
+                    handleTitleChange(e.currentTarget.textContent || "(set title)");
+                    e.currentTarget.blur();
+                  }
+                }}
+              >
+                {appTitle}
+              </h1>
+            )}
+            <div className="flex items-center space-x-4">
+              <NavLink to="/" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
+                Logs
+              </NavLink>
+              <NavLink to="/models" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
+                Models
+              </NavLink>
+              <NavLink to="/activity" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
+                Activity
+              </NavLink>
+              <button className="" onClick={toggleTheme}>
+                {isDarkMode ? <RiMoonFill /> : <RiSunFill />}
+              </button>
+              <ConnectionStatusIcon />
             </div>
-          </nav>
+          </div>
+        </nav>
 
-          <main className="mx-auto py-4 px-4">
-            <Routes>
-              <Route path="/" element={<LogViewerPage />} />
-              <Route path="/models" element={<ModelPage />} />
-              <Route path="/activity" element={<ActivityPage />} />
-              <Route path="*" element={<Navigate to="/" replace />} />
-            </Routes>
-          </main>
-        </div>
-      </APIProvider>
+        <main className="flex-1 overflow-auto p-4">
+          <Routes>
+            <Route path="/" element={<LogViewerPage />} />
+            <Route path="/models" element={<ModelPage />} />
+            <Route path="/activity" element={<ActivityPage />} />
+            <Route path="*" element={<Navigate to="/" replace />} />
+          </Routes>
+        </main>
+      </div>
     </Router>
   );
 }

ui/src/components/ConnectionStatus.tsx

@@ -0,0 +1,26 @@
+import { useAPI } from "../contexts/APIProvider";
+import { useMemo } from "react";
+
+const ConnectionStatusIcon = () => {
+  const { connectionStatus } = useAPI();
+
+  const eventStatusColor = useMemo(() => {
+    switch (connectionStatus) {
+      case "connected":
+        return "bg-green-500";
+      case "connecting":
+        return "bg-yellow-500";
+      case "disconnected":
+      default:
+        return "bg-red-500";
+    }
+  }, [connectionStatus]);
+
+  return (
+    <div className="flex items-center" title={`event stream: ${connectionStatus}`}>
+      <span className={`inline-block w-3 h-3 rounded-full ${eventStatusColor} mr-2`}></span>
+    </div>
+  );
+};
+
+export default ConnectionStatusIcon;

ui/src/contexts/APIProvider.tsx

@@ -1,4 +1,5 @@
 import { useRef, createContext, useState, useContext, useEffect, useCallback, useMemo, type ReactNode } from "react";
+import type { ConnectionState } from "../lib/types";
 
 type ModelStatus = "ready" | "starting" | "stopping" | "stopped" | "shutdown" | "unknown";
 const LOG_LENGTH_LIMIT = 1024 * 100; /* 100KB of log data */
@@ -20,6 +21,7 @@ interface APIProviderType {
   proxyLogs: string;
   upstreamLogs: string;
   metrics: Metrics[];
+  connectionStatus: ConnectionState;
 }
 
 interface Metrics {
@@ -28,6 +30,7 @@ interface Metrics {
   model: string;
   input_tokens: number;
   output_tokens: number;
+  prompt_per_second: number;
   tokens_per_second: number;
   duration_ms: number;
 }
@@ -51,6 +54,7 @@ export function APIProvider({ children, autoStartAPIEvents = true }: APIProvider
   const [proxyLogs, setProxyLogs] = useState("");
   const [upstreamLogs, setUpstreamLogs] = useState("");
   const [metrics, setMetrics] = useState<Metrics[]>([]);
+  const [connectionStatus, setConnectionState] = useState<ConnectionState>("disconnected");
   const apiEventSource = useRef<EventSource | null>(null);
 
   const [models, setModels] = useState<Model[]>([]);
@@ -74,7 +78,20 @@ export function APIProvider({ children, autoStartAPIEvents = true }: APIProvider
     const initialDelay = 1000; // 1 second
 
     const connect = () => {
+      apiEventSource.current = null;
       const eventSource = new EventSource("/api/events");
+      setConnectionState("connecting");
+
+      eventSource.onopen = () => {
+        // clear everything out on connect to keep things in sync
+        setProxyLogs("");
+        setUpstreamLogs("");
+        setMetrics([]); // clear metrics on reconnect
+        setModels([]); // clear models on reconnect
+        apiEventSource.current = eventSource;
+        retryCount = 0;
+        setConnectionState("connected");
+      };
 
       eventSource.onmessage = (e: MessageEvent) => {
         try {
@@ -83,6 +100,12 @@ export function APIProvider({ children, autoStartAPIEvents = true }: APIProvider
             case "modelStatus":
               {
                 const models = JSON.parse(message.data) as Model[];
+
+                // sort models by name and id
+                models.sort((a, b) => {
+                  return (a.name + a.id).localeCompare(b.name + b.id);
+                });
+
                 setModels(models);
               }
               break;
@@ -101,9 +124,9 @@ export function APIProvider({ children, autoStartAPIEvents = true }: APIProvider
 
             case "metrics":
               {
-                const newMetric = JSON.parse(message.data) as Metrics;
+                const newMetrics = JSON.parse(message.data) as Metrics[];
                 setMetrics((prevMetrics) => {
-                  return [newMetric, ...prevMetrics];
+                  return [...newMetrics, ...prevMetrics];
                 });
               }
               break;
@@ -112,14 +135,14 @@ export function APIProvider({ children, autoStartAPIEvents = true }: APIProvider
           console.error(e.data, err);
         }
       };
+
       eventSource.onerror = () => {
         eventSource.close();
         retryCount++;
         const delay = Math.min(initialDelay * Math.pow(2, retryCount - 1), 5000);
+        setConnectionState("disconnected");
         setTimeout(connect, delay);
       };
-
-      apiEventSource.current = eventSource;
     };
 
     connect();
@@ -187,6 +210,7 @@ export function APIProvider({ children, autoStartAPIEvents = true }: APIProvider
       proxyLogs,
       upstreamLogs,
       metrics,
+      connectionStatus,
     }),
     [models, listModels, unloadAllModels, loadModel, enableAPIEvents, proxyLogs, upstreamLogs, metrics]
   );

ui/src/contexts/ThemeProvider.tsx

@@ -1,9 +1,18 @@
-import { createContext, useContext, useEffect, type ReactNode } from "react";
+import { createContext, useContext, useEffect, type ReactNode, useMemo, useState } from "react";
 import { usePersistentState } from "../hooks/usePersistentState";
+import type { ConnectionState } from "../lib/types";
 
+type ScreenWidth = "xs" | "sm" | "md" | "lg" | "xl" | "2xl";
 type ThemeContextType = {
   isDarkMode: boolean;
+  screenWidth: ScreenWidth;
+  isNarrow: boolean;
   toggleTheme: () => void;
+
+  // for managing the window title and connection state information
+  appTitle: string;
+  setAppTitle: (title: string) => void;
+  setConnectionState: (state: ConnectionState) => void;
 };
 
 const ThemeContext = createContext<ThemeContextType | undefined>(undefined);
@@ -13,15 +22,70 @@ type ThemeProviderProps = {
 };
 
 export function ThemeProvider({ children }: ThemeProviderProps) {
+  const [appTitle, setAppTitle] = usePersistentState("app-title", "llama-swap");
+  const [connectionState, setConnectionState] = useState<ConnectionState>("disconnected");
+
+  /**
+   * Set the document.title with informative information
+   */
+  useEffect(() => {
+    const connectionIcon = connectionState === "connecting" ? "🟡" : connectionState === "connected" ? "🟢" : "🔴";
+    document.title = connectionIcon + " " + appTitle; // Set initial title
+  }, [appTitle, connectionState]);
+
   const [isDarkMode, setIsDarkMode] = usePersistentState<boolean>("theme", false);
+  const [screenWidth, setScreenWidth] = useState<ScreenWidth>("md"); // Default to md
+
+  // matches tailwind classes
+  // https://tailwindcss.com/docs/responsive-design
+  useEffect(() => {
+    const checkInnerWidth = () => {
+      const innerWidth = window.innerWidth;
+      if (innerWidth < 640) {
+        setScreenWidth("xs");
+      } else if (innerWidth < 768) {
+        setScreenWidth("sm");
+      } else if (innerWidth < 1024) {
+        setScreenWidth("md");
+      } else if (innerWidth < 1280) {
+        setScreenWidth("lg");
+      } else if (innerWidth < 1536) {
+        setScreenWidth("xl");
+      } else {
+        setScreenWidth("2xl");
+      }
+    };
+
+    checkInnerWidth();
+    window.addEventListener("resize", checkInnerWidth);
+
+    return () => window.removeEventListener("resize", checkInnerWidth);
+  }, []);
 
   useEffect(() => {
     document.documentElement.setAttribute("data-theme", isDarkMode ? "dark" : "light");
   }, [isDarkMode]);
 
   const toggleTheme = () => setIsDarkMode((prev) => !prev);
+  const isNarrow = useMemo(() => {
+    return screenWidth === "xs" || screenWidth === "sm" || screenWidth === "md";
+  }, [screenWidth]);
 
-  return <ThemeContext.Provider value={{ isDarkMode, toggleTheme }}>{children}</ThemeContext.Provider>;
+  return (
+    <ThemeContext.Provider
+      value={{
+        isDarkMode,
+        toggleTheme,
+        screenWidth,
+        isNarrow,
+        appTitle,
+        setAppTitle,
+        setConnectionState,
+      }}
+    >
+      {children}
+    </ThemeContext.Provider>
+  );
 }
 
 export function useTheme(): ThemeContextType {

ui/src/lib/types.ts

@@ -0,0 +1 @@
+export type ConnectionState = "connected" | "connecting" | "disconnected";

ui/src/main.tsx

@@ -3,11 +3,14 @@ import { createRoot } from "react-dom/client";
 import "./index.css";
 import App from "./App.tsx";
 import { ThemeProvider } from "./contexts/ThemeProvider";
+import { APIProvider } from "./contexts/APIProvider";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <ThemeProvider>
-      <App />
+      <APIProvider>
+        <App />
+      </APIProvider>
     </ThemeProvider>
   </StrictMode>
 );

ui/src/pages/Activity.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from "react";
+import { useMemo } from "react";
 import { useAPI } from "../contexts/APIProvider";
 
 const formatTimestamp = (timestamp: string): string => {
@@ -15,25 +15,10 @@ const formatDuration = (ms: number): string => {
 
 const ActivityPage = () => {
   const { metrics } = useAPI();
-  const [error, setError] = useState<string | null>(null);
-
-  useEffect(() => {
-    if (metrics.length > 0) {
-      setError(null);
-    }
+  const sortedMetrics = useMemo(() => {
+    return [...metrics].sort((a, b) => b.id - a.id);
   }, [metrics]);
 
-  if (error) {
-    return (
-      <div className="p-6">
-        <h1 className="text-2xl font-bold mb-4">Activity</h1>
-        <div className="bg-red-50 border border-red-200 rounded-md p-4">
-          <p className="text-red-800">{error}</p>
-        </div>
-      </div>
-    );
-  }
-
   return (
     <div className="p-6">
       <h1 className="text-2xl font-bold mb-4">Activity</h1>
@@ -47,21 +32,25 @@ const ActivityPage = () => {
           <table className="min-w-full divide-y">
             <thead>
               <tr>
+                <th className="px-4 py-3 text-left text-xs font-medium uppercase tracking-wider">Id</th>
                 <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Timestamp</th>
                 <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Model</th>
                 <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Input Tokens</th>
                 <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Output Tokens</th>
+                <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Prompt Processing</th>
                 <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Generation Speed</th>
                 <th className="px-6 py-3 text-left text-xs font-medium uppercase tracking-wider">Duration</th>
               </tr>
             </thead>
             <tbody className="divide-y">
-              {metrics.map((metric, index) => (
-                <tr key={`${metric.id}-${index}`}>
+              {sortedMetrics.map((metric) => (
+                <tr key={`metric_${metric.id}`}>
+                  <td className="px-4 py-4 whitespace-nowrap text-sm">{metric.id + 1 /* un-zero index */}</td>
                   <td className="px-6 py-4 whitespace-nowrap text-sm">{formatTimestamp(metric.timestamp)}</td>
                   <td className="px-6 py-4 whitespace-nowrap text-sm">{metric.model}</td>
                   <td className="px-6 py-4 whitespace-nowrap text-sm">{metric.input_tokens.toLocaleString()}</td>
                   <td className="px-6 py-4 whitespace-nowrap text-sm">{metric.output_tokens.toLocaleString()}</td>
+                  <td className="px-6 py-4 whitespace-nowrap text-sm">{formatSpeed(metric.prompt_per_second)}</td>
                   <td className="px-6 py-4 whitespace-nowrap text-sm">{formatSpeed(metric.tokens_per_second)}</td>
                   <td className="px-6 py-4 whitespace-nowrap text-sm">{formatDuration(metric.duration_ms)}</td>
                 </tr>

ui/src/pages/LogViewer.tsx

@@ -1,15 +1,38 @@
 import { useState, useEffect, useRef, useMemo, useCallback } from "react";
 import { useAPI } from "../contexts/APIProvider";
 import { usePersistentState } from "../hooks/usePersistentState";
+import { Panel, PanelGroup, PanelResizeHandle } from "react-resizable-panels";
+import {
+  RiTextWrap,
+  RiAlignJustify,
+  RiFontSize,
+  RiMenuSearchLine,
+  RiMenuSearchFill,
+  RiCloseCircleFill,
+} from "react-icons/ri";
+import { useTheme } from "../contexts/ThemeProvider";
 
 const LogViewer = () => {
   const { proxyLogs, upstreamLogs } = useAPI();
+  const { isNarrow } = useTheme();
+  const direction = isNarrow ? "vertical" : "horizontal";
 
   return (
-    <div className="flex flex-col gap-5" style={{ height: "calc(100vh - 125px)" }}>
-      <LogPanel id="proxy" title="Proxy Logs" logData={proxyLogs} />
-      <LogPanel id="upstream" title="Upstream Logs" logData={upstreamLogs} />
-    </div>
+    <PanelGroup direction={direction} className="gap-2" autoSaveId="logviewer-panel-group">
+      <Panel id="proxy" defaultSize={50} minSize={5} maxSize={100} collapsible={true}>
+        <LogPanel id="proxy" title="Proxy Logs" logData={proxyLogs} />
+      </Panel>
+      <PanelResizeHandle
+        className={
+          direction === "horizontal"
+            ? "w-2 h-full bg-primary hover:bg-success transition-colors rounded"
+            : "w-full h-2 bg-primary hover:bg-success transition-colors rounded"
+        }
+      />
+      <Panel id="upstream" defaultSize={50} minSize={5} maxSize={100} collapsible={true}>
+        <LogPanel id="upstream" title="Upstream Logs" logData={upstreamLogs} />
+      </Panel>
+    </PanelGroup>
   );
 };
 
@@ -17,17 +40,15 @@ interface LogPanelProps {
   id: string;
   title: string;
   logData: string;
-  className?: string;
 }
-
-export const LogPanel = ({ id, title, logData, className }: LogPanelProps) => {
-  const [isCollapsed, setIsCollapsed] = usePersistentState(`logPanel-${id}-isCollapsed`, false);
+export const LogPanel = ({ id, title, logData }: LogPanelProps) => {
   const [filterRegex, setFilterRegex] = useState("");
   const [fontSize, setFontSize] = usePersistentState<"xxs" | "xs" | "small" | "normal">(
     `logPanel-${id}-fontSize`,
     "normal"
   );
   const [wrapText, setTextWrap] = usePersistentState(`logPanel-${id}-wrapText`, false);
+  const [showFilter, setShowFilter] = usePersistentState(`logPanel-${id}-showFilter`, false);
 
   const textWrapClass = useMemo(() => {
     return wrapText ? "whitespace-pre-wrap" : "whitespace-pre";
@@ -48,6 +69,19 @@ export const LogPanel = ({ id, title, logData, className }: LogPanelProps) => {
     });
   }, []);
 
+  const toggleWrapText = useCallback(() => {
+    setTextWrap((prev) => !prev);
+  }, []);
+
+  const toggleFilter = useCallback(() => {
+    if (showFilter) {
+      setShowFilter(false);
+      setFilterRegex(""); // Clear filter when closing
+    } else {
+      setShowFilter(true);
+    }
+  }, [filterRegex, setFilterRegex, showFilter]);
+
   const fontSizeClass = useMemo(() => {
     switch (fontSize) {
       case "xxs":
@@ -81,56 +115,47 @@ export const LogPanel = ({ id, title, logData, className }: LogPanelProps) => {
   }, [filteredLogs]);
 
   return (
-    <div
-      className={`bg-surface border border-border rounded-lg overflow-hidden flex flex-col ${
-        !isCollapsed && "h-full"
-      } ${className || ""}`}
-    >
+    <div className="bg-surface border border-border rounded-lg overflow-hidden flex flex-col h-full">
       <div className="p-4 border-b border-border bg-secondary">
-        <div className="flex flex-col md:flex-row md:items-center md:justify-between gap-4">
-          {/* Title - Always full width on mobile, normal on desktop */}
-          <div className="w-full md:w-auto" onClick={() => setIsCollapsed(!isCollapsed)}>
-            <h3 className="m-0 text-lg">{title}</h3>
+        <div className="flex items-center justify-between">
+          <h3 className="m-0 text-lg p-0">{title}</h3>
+
+          <div className="flex gap-2 items-center">
+            <button className="btn" onClick={toggleFontSize}>
+              <RiFontSize />
+            </button>
+            <button className="btn" onClick={toggleWrapText}>
+              {wrapText ? <RiTextWrap /> : <RiAlignJustify />}
+            </button>
+            <button className="btn" onClick={toggleFilter}>
+              {showFilter ? <RiMenuSearchFill /> : <RiMenuSearchLine />}
+            </button>
           </div>
+        </div>
 
-          <div className="flex flex-col sm:flex-row gap-4 w-full md:w-auto">
-            {/* Sizing Buttons - Stacks vertically on mobile */}
-            <div className="flex flex-wrap gap-2">
-              <button className="btn" onClick={toggleFontSize}>
-                font: {fontSize}
-              </button>
-              <button className="btn" onClick={() => setTextWrap((prev) => !prev)}>
-                {wrapText ? "wrap" : "wrap off"}
-              </button>
-            </div>
-
-            {/* Filtering Options - Full width on mobile, normal on desktop */}
-            <div className="flex flex-1 min-w-0 gap-2">
+        {/* Filtering Options - Full width on mobile, normal on desktop */}
+        {showFilter && (
+          <div className="mt-2 w-full">
+            <div className="flex gap-2 items-center w-full">
               <input
                 type="text"
-                className="flex-1 min-w-[120px] text-sm border p-2 rounded"
+                className="w-full text-sm border p-2 rounded"
                 placeholder="Filter logs..."
                 value={filterRegex}
                 onChange={(e) => setFilterRegex(e.target.value)}
               />
-              <button className="btn" onClick={() => setFilterRegex("")}>
-                Clear
+              <button className="pl-2" onClick={() => setFilterRegex("")}>
+                <RiCloseCircleFill size="24" />
               </button>
             </div>
           </div>
-        </div>
+        )}
+      </div>
+      <div className="bg-background font-mono text-sm flex-1 overflow-hidden">
+        <pre ref={preTagRef} className={`${textWrapClass} ${fontSizeClass} h-full overflow-auto p-4`}>
+          {filteredLogs}
+        </pre>
       </div>
-
-      {!isCollapsed && (
-        <div className="flex-1 bg-background font-mono text-sm p-3 overflow-hidden">
-          <pre
-            ref={preTagRef}
-            className={`h-full p-4 overflow-y-auto whitespace-pre min-h-0 ${textWrapClass} ${fontSizeClass}`}
-          >
-            {filteredLogs}
-          </pre>
-        </div>
-      )}
     </div>
   );
 };

ui/src/pages/Models.tsx

@@ -2,11 +2,45 @@ import { useState, useCallback, useMemo } from "react";
 import { useAPI } from "../contexts/APIProvider";
 import { LogPanel } from "./LogViewer";
 import { usePersistentState } from "../hooks/usePersistentState";
+import { Panel, PanelGroup, PanelResizeHandle } from "react-resizable-panels";
+import { useTheme } from "../contexts/ThemeProvider";
+import { RiEyeFill, RiEyeOffFill, RiStopCircleLine, RiSwapBoxFill } from "react-icons/ri";
 
 export default function ModelsPage() {
-  const { models, unloadAllModels, loadModel, upstreamLogs, metrics } = useAPI();
+  const { isNarrow } = useTheme();
+  const direction = isNarrow ? "vertical" : "horizontal";
+  const { upstreamLogs } = useAPI();
+
+  return (
+    <PanelGroup direction={direction} className="gap-2" autoSaveId={"models-panel-group"}>
+      <Panel id="models" defaultSize={50} minSize={isNarrow ? 0 : 25} maxSize={100} collapsible={isNarrow}>
+        <ModelsPanel />
+      </Panel>
+
+      <PanelResizeHandle
+        className={
+          direction === "horizontal"
+            ? "w-2 h-full bg-primary hover:bg-success transition-colors rounded"
+            : "w-full h-2 bg-primary hover:bg-success transition-colors rounded"
+        }
+      />
+      <Panel collapsible={true} defaultSize={50} minSize={0}>
+        <div className="flex flex-col h-full space-y-4">
+          {direction === "horizontal" && <StatsPanel />}
+          <div className="flex-1 min-h-0">
+            <LogPanel id="modelsupstream" title="Upstream Logs" logData={upstreamLogs} />
+          </div>
+        </div>
+      </Panel>
+    </PanelGroup>
+  );
+}
+
+function ModelsPanel() {
+  const { models, loadModel, unloadAllModels } = useAPI();
   const [isUnloading, setIsUnloading] = useState(false);
   const [showUnlisted, setShowUnlisted] = usePersistentState("showUnlisted", true);
+  const [showIdorName, setShowIdorName] = usePersistentState<"id" | "name">("showIdorName", "id"); // true = show ID, false = show name
 
   const filteredModels = useMemo(() => {
     return models.filter((model) => showUnlisted || !model.unlisted);
@@ -19,103 +53,120 @@ export default function ModelsPage() {
     } catch (e) {
       console.error(e);
     } finally {
-      // at least give it a second to show the unloading message
       setTimeout(() => {
         setIsUnloading(false);
       }, 1000);
     }
-  }, []);
+  }, [unloadAllModels]);
 
-  const [totalRequests, totalTokens, avgTokensPerSecond] = useMemo(() => {
-    const totalRequests = metrics.length;
-    if (totalRequests === 0) {
-      return [0, 0, 0];
-    }
-    const totalTokens = metrics.reduce((sum, m) => sum + m.output_tokens, 0);
-    const avgTokensPerSecond = (metrics.reduce((sum, m) => sum + m.tokens_per_second, 0) / totalRequests).toFixed(2);
-    return [totalRequests, totalTokens, avgTokensPerSecond];
-  }, [metrics]);
+  const toggleIdorName = useCallback(() => {
+    setShowIdorName((prev) => (prev === "name" ? "id" : "name"));
+  }, [showIdorName]);
 
   return (
-    <div>
-      <div className="flex flex-col md:flex-row gap-4">
-        {/* Left Column */}
-        <div className="w-full md:w-1/2 flex items-top">
-          <div className="card w-full">
-            <h2 className="">Models</h2>
-            <div className="flex justify-between">
-              <button className="btn" onClick={() => setShowUnlisted(!showUnlisted)} style={{ lineHeight: "1.2" }}>
-                {showUnlisted ? "🟢 unlisted" : "⚫️ unlisted"}
-              </button>
-              <button className="btn" onClick={handleUnloadAllModels} disabled={isUnloading}>
-                {isUnloading ? "Stopping ..." : "Stop All"}
-              </button>
-            </div>
+    <div className="card h-full flex flex-col">
+      <div className="shrink-0">
+        <h2>Models</h2>
+        <div className="flex justify-between">
+          <div className="flex gap-2">
+            <button className="btn flex items-center gap-2" onClick={toggleIdorName} style={{ lineHeight: "1.2" }}>
+              <RiSwapBoxFill /> {showIdorName === "id" ? "ID" : "Name"}
+            </button>
 
-            <table className="w-full mt-4">
-              <thead>
-                <tr className="border-b border-primary">
-                  <th className="text-left p-2">Name</th>
-                  <th className="text-left p-2"></th>
-                  <th className="text-left p-2">State</th>
-                </tr>
-              </thead>
-              <tbody>
-                {filteredModels.map((model) => (
-                  <tr key={model.id} className="border-b hover:bg-secondary-hover border-border">
-                    <td className="p-2">
-                      <a href={`/upstream/${model.id}/`} className="underline" target="_blank">
-                        {model.name !== "" ? model.name : model.id}
-                      </a>
-                      {model.description != "" && (
-                        <p>
-                          <em>{model.description}</em>
-                        </p>
-                      )}
-                    </td>
-                    <td className="p-2 w-[50px]">
-                      <button
-                        className="btn btn--sm"
-                        disabled={model.state !== "stopped"}
-                        onClick={() => loadModel(model.id)}
-                      >
-                        Load
-                      </button>
-                    </td>
-                    <td className="p-2 w-[75px]">
-                      <span className={`status status--${model.state}`}>{model.state}</span>
-                    </td>
-                  </tr>
-                ))}
-              </tbody>
-            </table>
+            <button
+              className="btn flex items-center gap-2"
+              onClick={() => setShowUnlisted(!showUnlisted)}
+              style={{ lineHeight: "1.2" }}
+            >
+              {showUnlisted ? <RiEyeFill /> : <RiEyeOffFill />} unlisted
+            </button>
           </div>
+          <button className="btn flex items-center gap-2" onClick={handleUnloadAllModels} disabled={isUnloading}>
+            <RiStopCircleLine size="24" /> {isUnloading ? "Unloading..." : "Unload"}
+          </button>
         </div>
+      </div>
 
-        {/* Right Column */}
-        <div className="w-full md:w-1/2 flex flex-col" style={{ height: "calc(100vh - 125px)" }}>
-          <div className="card mb-4 min-h-[225px]">
-            <h2>Chat Activity</h2>
-            <table className="w-full border border-gray-200">
-              <tbody>
-                <tr className="border-b border-gray-200">
-                  <td className="py-2 px-4 font-medium border-r border-gray-200">Requests</td>
-                  <td className="py-2 px-4 text-right">{totalRequests}</td>
-                </tr>
-                <tr className="border-b border-gray-200">
-                  <td className="py-2 px-4 font-medium border-r border-gray-200">Total Tokens Generated</td>
-                  <td className="py-2 px-4 text-right">{totalTokens}</td>
-                </tr>
-                <tr>
-                  <td className="py-2 px-4 font-medium border-r border-gray-200">Average Tokens/Second</td>
-                  <td className="py-2 px-4 text-right">{avgTokensPerSecond}</td>
-                </tr>
-              </tbody>
-            </table>
-          </div>
-
-          <LogPanel id="modelsupstream" title="Upstream Logs" logData={upstreamLogs} />
-        </div>
+      <div className="flex-1 overflow-y-auto">
+        <table className="w-full">
+          <thead className="sticky top-0 bg-card z-10">
+            <tr className="border-b border-primary bg-surface">
+              <th className="text-left p-2">{showIdorName === "id" ? "Model ID" : "Name"}</th>
+              <th className="text-left p-2"></th>
+              <th className="text-left p-2">State</th>
+            </tr>
+          </thead>
+          <tbody>
+            {filteredModels.map((model) => (
+              <tr key={model.id} className="border-b hover:bg-secondary-hover border-border">
+                <td className={`p-2 ${model.unlisted ? "text-txtsecondary" : ""}`}>
+                  <a href={`/upstream/${model.id}/`} className={`underline`} target="_blank">
+                    {showIdorName === "id" ? model.id : model.name !== "" ? model.name : model.id}
+                  </a>
+                  {model.description !== "" && (
+                    <p className={model.unlisted ? "text-opacity-70" : ""}>
+                      <em>{model.description}</em>
+                    </p>
+                  )}
+                </td>
+                <td className="p-2 w-[50px]">
+                  <button
+                    className="btn btn--sm"
+                    disabled={model.state !== "stopped"}
+                    onClick={() => loadModel(model.id)}
+                  >
+                    Load
+                  </button>
+                </td>
+                <td className="p-2 w-[75px]">
+                  <span className={`status status--${model.state}`}>{model.state}</span>
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  );
+}
+
+function StatsPanel() {
+  const { metrics } = useAPI();
+
+  const [totalRequests, totalInputTokens, totalOutputTokens, avgTokensPerSecond] = useMemo(() => {
+    const totalRequests = metrics.length;
+    if (totalRequests === 0) {
+      return [0, 0, 0];
+    }
+    const totalInputTokens = metrics.reduce((sum, m) => sum + m.input_tokens, 0);
+    const totalOutputTokens = metrics.reduce((sum, m) => sum + m.output_tokens, 0);
+    const avgTokensPerSecond = (metrics.reduce((sum, m) => sum + m.tokens_per_second, 0) / totalRequests).toFixed(2);
+    return [totalRequests, totalInputTokens, totalOutputTokens, avgTokensPerSecond];
+  }, [metrics]);
+
+  return (
+    <div className="card">
+      <div className="rounded-lg overflow-hidden border border-gray-200">
+        <table className="w-full">
+          <tbody>
+            <tr>
+              <th className="p-2 font-medium border-b border-gray-200 text-right">Requests</th>
+              <th className="p-2 font-medium border-l border-b border-gray-200 text-right">Processed</th>
+              <th className="p-2 font-medium border-l border-b border-gray-200 text-right">Generated</th>
+              <th className="p-2 font-medium border-l border-b border-gray-200 text-right">Tokens/Sec</th>
+            </tr>
+            <tr>
+              <td className="p-2 text-right border-r border-gray-200">{totalRequests}</td>
+              <td className="p-2 text-right border-r border-gray-200">
+                {new Intl.NumberFormat().format(totalInputTokens)}
+              </td>
+              <td className="p-2 text-right border-r border-gray-200">
+                {new Intl.NumberFormat().format(totalOutputTokens)}
+              </td>
+              <td className="p-2 text-right">{avgTokensPerSecond}</td>
+            </tr>
+          </tbody>
+        </table>
       </div>
     </div>
   );