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101For most tasks in Codex, start with `gpt-5.4`. It combines strong coding,101For most tasks in Codex, start with `gpt-5.4`. It combines strong coding,
102reasoning, native computer use, and broader professional workflows in one102reasoning, native computer use, and broader professional workflows in one
103model. Use `gpt-5.4-mini` when you want a faster, lower-cost option for103model. Use `gpt-5.4-mini` when you want a faster, lower-cost option for
104104lighter coding tasks or subagents. The `gpt-5.3-codex-spark` model remainslighter coding tasks or subagents. The `gpt-5.3-codex-spark` model is
105available in research preview for ChatGPT Pro subscribers and is optimized for105available in research preview for ChatGPT Pro subscribers and is optimized for
106106near-instant, text-only iteration.near-instant, real-time coding iteration.
107 107
108## Alternative models108## Alternative models
109 109