> ## 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-opus-5-5",
  "claude_api_key": "YOUR_API_KEY"
}
```

| Parameter | Description |
| - | - |
| `model` | Supports `claude-opus-5-5`, `claude-opus-5`, `claude-sonnet-5`, `claude-fable-5-1`, `claude-fable-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-opus-5-5` | Latest flagship; default recommendation, best on complex reasoning and long-running Agent tasks |
| `claude-opus-5` | Previous Opus flagship |
| `claude-sonnet-5` | Balanced option in the Claude 5 family; good reasoning quality at a lower price |
| `claude-fable-5-1` | Alternative flagship in the Claude 5 family (newer revision) |
| `claude-fable-5` | Alternative flagship in the Claude 5 family |
| `claude-opus-4-8` / `claude-opus-4-7` | Earlier Opus flagships |
| `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 |

## Thinking Mode

Controlled by the global `enable_thinking` setting, which can also be toggled on the Web Console configuration page. When enabled, the Web Console shows the thinking process:

```json theme={null}
{
  "enable_thinking": true,
  "reasoning_effort": "high"
}
```

`reasoning_effort` sets the thinking intensity (mapped to Anthropic's `output_config.effort`) and accepts `low` / `medium` / `high` / `xhigh` / `max`, with the supported range depending on the model. It only takes effect when `enable_thinking` is `true`.

## 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"
    }
  }
}
```


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