Model selection

Choose a model for Claude, OpenCode, Copilot, or Cursor.

Claude models

Model	When to pick it
Sonnet 5.5	Balanced cost and quality, faster and cheaper than Sonnet 4.6.
Opus 5.5	Complex APIs (many endpoints, nested auth, polymorphic responses).
Opus 4.6	The previous Opus, for comparison or when a run needs it.
Haiku 5.5	Cheapest and fastest. Good for simple endpoints or quick iterations.

Sonnet 4.6 stays the default until you choose another model. It and Haiku 4.5 are no longer offered in the pickers, but --model and config.json still accept them.

Change the model

In the session, type /model. In collector mode, /model sets the collector's own model (collector_model).

Or pass a model to a direct command:

reverse-api-engineer agent --prompt "capture the jobs api" --model claude-sonnet-5-5

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

{
  "claude_code_model": "claude-opus-5-5"
}

Effort

Claude models take an effort level, from low to max: how hard the agent thinks before acting. Higher effort is slower and costs more, and helps on hard captures. Set it with /effort or Ctrl+E in the session, or with claude_effort in the config. Leaving it unset keeps each model's default: medium for Opus 5.5 and Haiku 5.5, high for the others. Haiku 4.5 has no effort setting.

Config file reference

The full default config:

{
  "agent_provider": "auto",
  "agent_browser_notes": "",
  "agent_browser_npx_package": "agent-browser@0",
  "claude_code_model": "claude-sonnet-4-6",
  "claude_setting_sources": [],
  "claude_effort": null,
  "collector_model": "claude-sonnet-4-6",
  "cursor_model": "composer-2.5",
  "cursor_web_search": true,
  "cursor_setting_sources": null,
  "copilot_model": "gpt-5",
  "opencode_model": "big-pickle",
  "opencode_provider": "opencode",
  "opencode_auto_start": true,
  "opencode_base_url": "http://127.0.0.1:4096",
  "opencode_npx_package": "opencode-ai@latest",
  "ollama_auto_start": true,
  "ollama_base_url": "http://127.0.0.1:11434",
  "output_dir": null,
  "output_language": "python",
  "real_time_sync": true,
  "sdk": "claude"
}

OpenCode users

If you've configured the OpenCode SDK, choose OpenCode Provider / Model in /settings. RAE loads the connected providers and active tool-capable models from your OpenCode server, marks free OpenCode options, and saves the pair together. Advanced users can still edit the opencode_model and opencode_provider keys directly.

For Ollama, set opencode_provider to ollama. The /settings flow discovers installed models and only offers those that report tool calling plus the 64k context OpenCode requires. RAE does not pull models automatically.

Copilot and Cursor users

Copilot uses copilot_model (default gpt-5). Cursor uses cursor_model (default composer-2.5) plus cursor_web_search / cursor_setting_sources for controlling which Cursor settings layers are loaded.