> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.deepgram.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.deepgram.com/_mcp/server.

## Claude Sonnet 5 Now Available

`claude-sonnet-5` is now available as a managed Anthropic LLM in the Voice Agent API. This Advanced tier model delivers improved reasoning and conversational quality for your voice agents.

Set the model in your agent configuration:

```json
{
  "agent": {
    "think": {
      "provider": {
        "type": "anthropic",
        "model": "claude-sonnet-5",
        "temperature": 0.5
      }
    }
  }
}
```

### Deprecation: Claude Sonnet 4

`claude-sonnet-4-20250514` is now deprecated. Migrate to `claude-sonnet-5` or another supported Anthropic model. This model has been [retired by Anthropic](https://platform.claude.com/docs/en/about-claude/model-deprecations#2026-04-14-claude-sonnet-4-and-claude-opus-4-models) and will produce an error if specified in your settings configuration.

For the full list of supported models and pricing tiers, see the [Voice Agent LLM Models documentation](/docs/voice-agent-llm-models).