> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cowagent.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Claude

> Anthropic Claude model configuration (Text Chat + Image Understanding)

Claude is provided by Anthropic and supports both text chat and image understanding. The mainstream Sonnet / Opus models natively support vision, so no separate Vision model needs to be specified.

<Tip>
  All capabilities below can be configured in one place via the "Model Management" page in the Web Console, with no need to manually edit the configuration file.
</Tip>

## Text Chat

```json theme={null}
{
  "model": "claude-sonnet-5",
  "claude_api_key": "YOUR_API_KEY"
}
```

| Parameter         | Description                                                                                                                                                                                                                                                                 |
| ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `model`           | Supports `claude-sonnet-5`, `claude-opus-4-8`, `claude-opus-4-7`, `claude-sonnet-4-6`, `claude-opus-4-6`, `claude-sonnet-4-5`, `claude-sonnet-4-0`, `claude-3-5-sonnet-latest`, etc. See [official models](https://docs.anthropic.com/en/docs/about-claude/models/overview) |
| `claude_api_key`  | Create one in the [Claude Console](https://console.anthropic.com/settings/keys)                                                                                                                                                                                             |
| `claude_api_base` | Optional, defaults to `https://api.anthropic.com/v1`. Can be changed to a third-party proxy                                                                                                                                                                                 |

### Model Selection

| Model                                                         | Use Case                                                                            |
| ------------------------------------------------------------- | ----------------------------------------------------------------------------------- |
| `claude-sonnet-5`                                             | Latest flagship; default recommendation, best balance of reasoning quality and cost |
| `claude-opus-4-8`                                             | Previous flagship with the strongest reasoning, at a higher price                   |
| `claude-opus-4-7`                                             | Earlier Opus flagship                                                               |
| `claude-sonnet-4-6`                                           | Balanced cost and speed, lower cost                                                 |
| `claude-opus-4-6` / `claude-sonnet-4-5` / `claude-sonnet-4-0` | Earlier flagships at a lower price                                                  |

## Image Understanding

Once `claude_api_key` is configured, the Agent's Vision tool automatically uses the Claude main model to recognize images, with no extra setup required.

To manually specify a Vision model, set it explicitly in the configuration file:

```json theme={null}
{
  "tools": {
    "vision": {
      "model": "claude-sonnet-5"
    }
  }
}
```