> Discover all available pages from the documentation index: https://mastra.zisheng.pro/en/llms.txt

# ![ai&](https://models.dev/logos/aiand.svg)ai&

Access 8 ai& models through Mastra's model router. Authentication is handled automatically using the `AIAND_API_KEY` environment variable.

Learn more in the [ai& documentation](https://docs.aiand.com/).

```bash
AIAND_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: "aiand/deepseek-ai/deepseek-v4-flash"
});

// 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 [ai& documentation](https://docs.aiand.com/) for details.

## Models

| Model                                 | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| ------------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `aiand/deepseek-ai/deepseek-v4-flash` | 1.0M    |       |           |       |       |       | $0.15      | $0.25       |
| `aiand/deepseek-ai/deepseek-v4-pro`   | 1.0M    |       |           |       |       |       | $1         | $3          |
| `aiand/google/gemma-4-31b-it`         | 262K    |       |           |       |       |       | $0.20      | $0.50       |
| `aiand/moonshotai/kimi-k2.7-code`     | 262K    |       |           |       |       |       | $0.75      | $4          |
| `aiand/moonshotai/kimi-k3`            | 1.0M    |       |           |       |       |       | $3         | $13         |
| `aiand/openai/gpt-oss-120b`           | 131K    |       |           |       |       |       | $0.15      | $0.60       |
| `aiand/qwen/qwen3.6-27b`              | 262K    |       |           |       |       |       | —          | —           |
| `aiand/zai-org/glm-5.2`               | 1.0M    |       |           |       |       |       | $1         | $4          |

## Advanced configuration

### Custom headers

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.aiand.com/v1",
    id: "aiand/deepseek-ai/deepseek-v4-flash",
    apiKey: process.env.AIAND_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
      ? "aiand/zai-org/glm-5.2"
      : "aiand/deepseek-ai/deepseek-v4-flash";
  }
});
```