Model selection

Pick between Claude Sonnet, Opus, and Haiku for API generation.

Available models

Model	When to pick it
Sonnet 4.6 (default)	Balanced cost and quality. Right answer for most captures.
Opus 4.6	Complex APIs (many endpoints, nested auth, polymorphic responses).
Haiku 4.5	Cheapest and fastest. Good for simple endpoints or quick iterations.

Change the model

In the CLI:

/settings then "Claude Code Model"

Or pass at launch:

reverse-api-engineer manual --model claude-sonnet-4-6

Or edit ~/.reverse-api/config.json directly:

{
  "claude_code_model": "claude-opus-4-6"
}

Config file reference

The full default config:

{
  "agent_provider": "auto",
  "claude_code_model": "claude-sonnet-4-6",
  "collector_model": "claude-sonnet-4-6",
  "cursor_model": "composer-2",
  "cursor_web_search": true,
  "cursor_setting_sources": null,
  "copilot_model": "gpt-5",
  "opencode_model": "claude-opus-4-6",
  "opencode_provider": "anthropic",
  "output_dir": null,
  "output_language": "python",
  "real_time_sync": true,
  "sdk": "claude"
}

OpenCode users

If you've configured the OpenCode SDK, see models.dev for the available model IDs. Set them via the opencode_model and opencode_provider keys in the config.

Copilot and Cursor users

Copilot uses copilot_model (default gpt-5). Cursor uses cursor_model (default composer-2) plus cursor_web_search / cursor_setting_sources for controlling which Cursor settings layers are loaded.