docs: add OpenCode community provider

content/docs/02-foundations/02-providers-and-models.mdx

@@ -85,6 +85,7 @@ The open-source community has created the following providers:
 - [AI/ML API Provider](/providers/community-providers/aimlapi) (`@ai-ml.api/aimlapi-vercel-ai`)
 - [MCP Sampling Provider](/providers/community-providers/mcp-sampling) (`@mcpc-tech/mcp-sampling-ai-provider`)
 - [ACP Provider](/providers/community-providers/acp) (`@mcpc-tech/acp-ai-provider`)
+- [OpenCode Provider](/providers/community-providers/opencode-sdk) (`ai-sdk-provider-opencode-sdk`)
 
 ## Self-Hosted Models
 

content/providers/03-community-providers/102-opencode-sdk.mdx

@@ -0,0 +1,169 @@
+---
+title: OpenCode
+description: Learn how to use the OpenCode provider to access multiple AI models through a unified interface.
+---
+
+# OpenCode Provider
+
+The [ai-sdk-provider-opencode-sdk](https://github.com/ben-vargas/ai-sdk-provider-opencode-sdk) community provider enables using multiple AI providers (Anthropic, OpenAI, Google) through the [OpenCode SDK](https://www.npmjs.com/package/@opencode-ai/sdk). OpenCode is a terminal-based AI coding assistant that provides a unified interface to various AI models.
+
+## Version Compatibility
+
+| Provider Version | AI SDK Version | NPM Tag     | Status      |
+| ---------------- | -------------- | ----------- | ----------- |
+| 1.x              | v6             | `latest`    | Stable      |
+| 0.x              | v5             | `ai-sdk-v5` | Maintenance |
+
+```bash
+# AI SDK v6 (default)
+npm install ai-sdk-provider-opencode-sdk ai
+
+# AI SDK v5
+npm install ai-sdk-provider-opencode-sdk@ai-sdk-v5 ai@^5.0.0
+```
+
+## Setup
+
+<Tabs items={['pnpm', 'npm', 'yarn', 'bun']}>
+  <Tab>
+    <Snippet text="pnpm add ai-sdk-provider-opencode-sdk" dark />
+  </Tab>
+  <Tab>
+    <Snippet text="npm install ai-sdk-provider-opencode-sdk" dark />
+  </Tab>
+  <Tab>
+    <Snippet text="yarn add ai-sdk-provider-opencode-sdk" dark />
+  </Tab>
+  <Tab>
+    <Snippet text="bun add ai-sdk-provider-opencode-sdk" dark />
+  </Tab>
+</Tabs>
+
+## Provider Instance
+
+You can import the default provider instance `opencode` from `ai-sdk-provider-opencode-sdk`:
+
+```ts
+import { opencode } from 'ai-sdk-provider-opencode-sdk';
+```
+
+If you need a customized setup, you can import `createOpencode` and create a provider instance with your settings:
+
+```ts
+import { createOpencode } from 'ai-sdk-provider-opencode-sdk';
+
+const opencode = createOpencode({
+  autoStartServer: true,
+  serverTimeout: 10000,
+  defaultSettings: {
+    agent: 'build',
+  },
+});
+```
+
+Provider settings:
+
+- **hostname** _string_ - Server hostname (default: `127.0.0.1`).
+- **port** _number_ - Server port (default: `4096`).
+- **autoStartServer** _boolean_ - Auto-start the OpenCode server (default: `true`).
+- **serverTimeout** _number_ - Server startup timeout in milliseconds (default: `10000`).
+- **defaultSettings** _object_ - Default settings applied to all model calls.
+
+## Language Models
+
+Models are specified using the `providerID/modelID` format:
+
+```ts
+const model = opencode('anthropic/claude-sonnet-4-5-20250929');
+```
+
+**Model Shortcuts** (exported as `OpencodeModels`):
+
+```ts
+import { OpencodeModels } from 'ai-sdk-provider-opencode-sdk';
+
+// Anthropic Claude
+opencode(OpencodeModels['claude-opus-4-5']); // anthropic/claude-opus-4-5-20251101
+opencode(OpencodeModels['claude-sonnet-4-5']); // anthropic/claude-sonnet-4-5-20250929
+opencode(OpencodeModels['claude-haiku-4-5']); // anthropic/claude-haiku-4-5-20251001
+
+// OpenAI GPT
+opencode(OpencodeModels['gpt-4o']); // openai/gpt-4o
+opencode(OpencodeModels['gpt-4o-mini']); // openai/gpt-4o-mini
+
+// Google Gemini
+opencode(OpencodeModels['gemini-3-pro']); // google/gemini-3-pro-preview
+opencode(OpencodeModels['gemini-2.5-pro']); // google/gemini-2.5-pro
+opencode(OpencodeModels['gemini-2.5-flash']); // google/gemini-2.5-flash
+opencode(OpencodeModels['gemini-2.0-flash']); // google/gemini-2.0-flash
+```
+
+You can also use full model identifiers:
+
+```ts
+opencode('openai/gpt-5.1-codex');
+opencode('openai/gpt-5.1-codex-max');
+opencode('google/gemini-3-pro-preview');
+```
+
+### Example
+
+```ts
+import { opencode } from 'ai-sdk-provider-opencode-sdk';
+import { generateText } from 'ai';
+
+const { text } = await generateText({
+  model: opencode('anthropic/claude-sonnet-4-5-20250929'),
+  prompt: 'Write a vegetarian lasagna recipe for 4 people.',
+});
+```
+
+### Model Settings
+
+```ts
+const model = opencode('anthropic/claude-opus-4-5-20251101', {
+  agent: 'build', // 'build' | 'plan' | 'general' | 'explore'
+  sessionTitle: 'My Task',
+  systemPrompt: 'You are a helpful assistant.',
+});
+```
+
+### Model Capabilities
+
+| Provider  | Image Input         | Object Generation   | Tool Usage          | Tool Streaming      |
+| --------- | ------------------- | ------------------- | ------------------- | ------------------- |
+| Anthropic | <Check size={18} /> | <Check size={18} /> | <Cross size={18} /> | <Cross size={18} /> |
+| OpenAI    | <Check size={18} /> | <Check size={18} /> | <Cross size={18} /> | <Cross size={18} /> |
+| Google    | <Check size={18} /> | <Check size={18} /> | <Cross size={18} /> | <Cross size={18} /> |
+
+<Note>
+  Tool Usage and Tool Streaming show ❌ because this provider does not support
+  AI SDK custom tools (Zod schemas passed to `generateText`/`streamText`).
+  Custom tool definitions are explicitly ignored. OpenCode executes tools
+  server-side, which can be observed via streaming events. Image input supports
+  data URLs and base64 only. Object generation uses prompt-based JSON mode.
+</Note>
+
+## Server Management
+
+OpenCode runs as a managed server. Make sure to dispose of the provider when done:
+
+```ts
+import { opencode } from 'ai-sdk-provider-opencode-sdk';
+
+// After you're done
+await opencode.dispose();
+
+// Or if you need direct access to the client manager:
+// await opencode.getClientManager().dispose();
+```
+
+The client manager automatically cleans up on process exit (SIGINT, SIGTERM).
+
+## Requirements
+
+- Node.js 18 or higher
+- OpenCode CLI installed (`npm install -g opencode`)
+- Provider credentials configured in OpenCode (Anthropic, OpenAI, or Google API keys)
+
+For more details, see the [provider documentation](https://github.com/ben-vargas/ai-sdk-provider-opencode-sdk).