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Anthropic fast mode

You can now enable Anthropic’s fast mode for up to 2.5x faster output from Claude Opus 4.6 by setting speed: fast in your workflow stylesheet. This is useful for latency-sensitive stages where throughput matters more than cost. 
graph {
  graph [stylesheet="speed=fast"]
}

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fabro model test --deep

Model validation now supports a --deep flag that runs multi-turn tool-use conversations to verify that a provider handles the full agent loop correctly — not just single-turn completions. Tests run concurrently with a progress bar. 
fabro model test --deep

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More

  • Fixed workflow TOML config being lost when running in detach mode
  • Fixed edge thread_id precedence to match documented fidelity behavior
  • Fixed Sonnet 4.5 reasoning_effort parameter error by converting to the thinking API format
  • Fixed OpenAI reasoning round-trip losing encrypted content by setting store: false
  • Fixed OpenAI provider incorrectly omitting store: true from requests
  • Suppressed stderr output noise in detach and create modes