# ![Baseten logo](https://models.dev/logos/baseten.svg)Baseten

Access 7 Baseten models through Mastra's model router. Authentication is handled automatically using the `BASETEN_API_KEY` environment variable.

Learn more in the [Baseten documentation](https://docs.baseten.co/development/model-apis/overview).

```bash
BASETEN_API_KEY=your-api-key
```

```typescript
import { Agent } from "@mastra/core/agent";

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "baseten/Qwen/Qwen3-Coder-480B-A35B-Instruct"
});

// Generate a response
const response = await agent.generate("Hello!");

// Stream a response
const stream = await agent.stream("Tell me a story");
for await (const chunk of stream) {
  console.log(chunk);
}
```

> **Info:** Mastra uses the OpenAI-compatible `/chat/completions` endpoint. Some provider-specific features may not be available. Check the [Baseten documentation](https://docs.baseten.co/development/model-apis/overview) for details.

## Models

| Model                                         | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| --------------------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `baseten/deepseek-ai/DeepSeek-V3.2`           | 164K    |       |           |       |       |       | $0.30      | $0.45       |
| `baseten/moonshotai/Kimi-K2-Instruct-0905`    | 262K    |       |           |       |       |       | $0.60      | $3          |
| `baseten/moonshotai/Kimi-K2-Thinking`         | 262K    |       |           |       |       |       | $0.60      | $3          |
| `baseten/moonshotai/Kimi-K2.5`                | 262K    |       |           |       |       |       | $0.60      | $3          |
| `baseten/Qwen/Qwen3-Coder-480B-A35B-Instruct` | 262K    |       |           |       |       |       | $0.38      | $2          |
| `baseten/zai-org/GLM-4.6`                     | 200K    |       |           |       |       |       | $0.60      | $2          |
| `baseten/zai-org/GLM-4.7`                     | 205K    |       |           |       |       |       | $0.60      | $2          |

## Advanced Configuration

### Custom Headers

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://inference.baseten.co/v1",
    id: "baseten/Qwen/Qwen3-Coder-480B-A35B-Instruct",
    apiKey: process.env.BASETEN_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});
```

### Dynamic Model Selection

```typescript
const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "baseten/zai-org/GLM-4.7"
      : "baseten/Qwen/Qwen3-Coder-480B-A35B-Instruct";
  }
});
```