#reasoning
2 articles
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How to change reasoning effort in Codex CLI: model_reasoning_effort values and one-off overrides
How to change effort in Codex CLI: the model_reasoning_effort values (low, medium, high, xhigh, max, ultra) and how to set them in config.toml, with -c, or with /model.
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hide_agent_reasoning = true hides Codex reasoning output; show_raw_agent_reasoning = true shows it
hide_agent_reasoning = true suppresses reasoning, show_raw_agent_reasoning = true shows raw reasoning, model_reasoning_summary (auto to none) sets length. Depth is a separate key.