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

Access 11 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/MiniMaxAI/MiniMax-M2.5"
});

// 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-V3-0324` | 164K    |       |           |       |       |       | $0.77      | $0.77       |
| `baseten/deepseek-ai/DeepSeek-V3.1`    | 164K    |       |           |       |       |       | $0.50      | $2          |
| `baseten/deepseek-ai/DeepSeek-V4-Pro`  | 1.0M    |       |           |       |       |       | $2         | $3          |
| `baseten/MiniMaxAI/MiniMax-M2.5`       | 204K    |       |           |       |       |       | $0.30      | $1          |
| `baseten/moonshotai/Kimi-K2.5`         | 262K    |       |           |       |       |       | $0.60      | $3          |
| `baseten/moonshotai/Kimi-K2.6`         | 262K    |       |           |       |       |       | $0.95      | $4          |
| `baseten/nvidia/Nemotron-120B-A12B`    | 262K    |       |           |       |       |       | $0.30      | $0.75       |
| `baseten/openai/gpt-oss-120b`          | 128K    |       |           |       |       |       | $0.10      | $0.50       |
| `baseten/zai-org/GLM-4.6`              | 200K    |       |           |       |       |       | $0.60      | $2          |
| `baseten/zai-org/GLM-4.7`              | 205K    |       |           |       |       |       | $0.60      | $2          |
| `baseten/zai-org/GLM-5`                | 203K    |       |           |       |       |       | $0.95      | $3          |

## Advanced configuration

### Custom headers

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://inference.baseten.co/v1",
    id: "baseten/MiniMaxAI/MiniMax-M2.5",
    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-5"
      : "baseten/MiniMaxAI/MiniMax-M2.5";
  }
});
```