# ![Snowflake Cortex logo](https://models.dev/logos/snowflake-cortex.svg)Snowflake Cortex

Access 18 Snowflake Cortex models through Mastra's model router. Authentication is handled automatically using the `SNOWFLAKE_CORTEX_PAT` environment variable. Configure `SNOWFLAKE_ACCOUNT` as well.

Learn more in the [Snowflake Cortex documentation](https://docs.snowflake.com/en/user-guide/snowflake-cortex/cortex-rest-api).

```bash
SNOWFLAKE_ACCOUNT=your-value
SNOWFLAKE_CORTEX_PAT=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: "snowflake-cortex/claude-fable-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 [Snowflake Cortex documentation](https://docs.snowflake.com/en/user-guide/snowflake-cortex/cortex-rest-api) for details.

## Models

| Model                                     | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| ----------------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `snowflake-cortex/claude-fable-5`         | 1.0M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/claude-haiku-4-5`       | 200K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/claude-opus-4-7`        | 1.0M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/claude-opus-4-8`        | 1.0M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/claude-sonnet-4-5`      | 200K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/claude-sonnet-4-6`      | 1.0M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/deepseek-r1`            | 128K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/gemini-3.1-pro`         | 1.0M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/mistral-large2`         | 262K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-4.1`         | 1.0M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5`           | 400K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5-mini`      | 272K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5-nano`      | 400K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5.1`         | 400K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5.2`         | 400K    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5.4`         | 1.1M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/openai-gpt-5.5`         | 1.1M    |       |           |       |       |       | —          | —           |
| `snowflake-cortex/snowflake-llama3.3-70b` | 128K    |       |           |       |       |       | —          | —           |

## Advanced configuration

### Custom headers

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://${SNOWFLAKE_ACCOUNT}.snowflakecomputing.com/api/v2/cortex/v1",
    id: "snowflake-cortex/claude-fable-5",
    apiKey: process.env.SNOWFLAKE_CORTEX_PAT,
    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
      ? "snowflake-cortex/snowflake-llama3.3-70b"
      : "snowflake-cortex/claude-fable-5";
  }
});
```