docs: add models documentation

Author: wsxiaoys

packages/docs/content/assets/images/copilot-models.png

@@ -43,7 +43,7 @@ We recommend dragging Pochi to the right side of your VSCode window to get the b
 
 ![Drag to right sidebar](../assets/images/vscode-right-sidebar.png)
 
-With Pochi, you can use any LLM provider by configuring their API keys. Use the VS Code command `Pochi: Open Custom Model Settings` to open the settings file and configure it. Alternatively, Pochi offers cloud-based services. Creating a Pochi account gives you access to:
+With Pochi, you can use any LLM provider by configuring their API keys. Use the VS Code command `Pochi: Open Custom Model Settings` to open the settings file and [configure it](./models). Alternatively, Pochi offers cloud-based services. Creating a Pochi account gives you access to:
 
 - Pochi's managed LLM models
 - Shared task histories and team management

packages/docs/content/assets/images/pochi-models.png

@@ -12,6 +12,7 @@
     "share",
     "slack",
     "---Customize---",
+    "models",
     "rules",
     "workflows",
     "mcp"

packages/docs/content/docs/docs.json

@@ -0,0 +1,42 @@
+---
+title: Models
+description: Manage Pochi's model settings
+icon: "Zap"
+---
+
+# Models
+
+Pochi leverages the AI SDK to support various LLM providers and can run local models.
+
+## Pochi Models
+
+After signing in, you gain access to the Pochi models shown below. Pochi uses a usage-based pricing strategy with no additional charges. For detailed pricing information, visit https://app.getpochi.com/pricing.
+
+![Pochi Models](../assets/images/pochi-models.png)
+
+## GitHub Copilot Models
+
+For Microsoft VS Code distributions, you can utilize your enabled Copilot models within Pochi.
+
+![Copilot Models](../assets/images/copilot-models.png)
+
+## OpenAI Compatible Models
+
+Pochi allows you to configure any LLM provider that offers an OpenAI-compatible API by setting up the appropriate API keys. To configure custom models, use the VS Code command `Pochi: Open Custom Model Settings` to open the settings configuration file.
+
+```json
+{
+  "id": "groq",
+  "apiKey": "your_api_key",
+  "baseUrl": "https://api.groq.com/openai/v1",
+  "models": [
+    {
+      "id": "moonshotai/kimi-k2-instruct",
+      "contextWindow": 131072,
+      "maxTokens": 8000
+    }
+  ]
+}
+```
+
+After saving the configuration, the model will be available in the toolbar's model selector.