models.md Codex Docs, 2026-05-12 01:59 UTC → 2026-05-14 07:00 UTC

37 value: false,37 value: false,

38 },38 },

39 { title: "ChatGPT Credits", value: true },39 { title: "ChatGPT Credits", value: true },

40 { title: "API Access", value: false },40 { title: "API Access", value: true },

41 ],41 ],

42 }}42 }}

43 />43 />

205For most tasks in Codex, start with `gpt-5.5` when it appears in your model205For most tasks in Codex, start with `gpt-5.5` when it appears in your model

206 picker. It is strongest for complex coding, computer use, knowledge work, and206 picker. It is strongest for complex coding, computer use, knowledge work, and

207 research workflows. GPT-5.5 is currently available in Codex when you sign in207 research workflows. GPT-5.5 is currently available in Codex when you sign in

208 with ChatGPT; it isn't available with API-key authentication. During the208 with ChatGPT or API-key authentication. Use `gpt-5.4-mini` when you want a

209 rollout, continue using `gpt-5.4` if `gpt-5.5` is not yet available. Use209 faster, lower-cost option for lighter coding tasks or subagents. The

210 `gpt-5.4-mini` when you want a faster, lower-cost option for lighter coding210 `gpt-5.3-codex-spark` model is available in research preview for ChatGPT Pro

211 tasks or subagents. The `gpt-5.3-codex-spark` model is available in research211 subscribers and is optimized for near-instant, real-time coding iteration.

212 preview for ChatGPT Pro subscribers and is optimized for near-instant,

213 real-time coding iteration.

214 212 

215## Alternative models213## Alternative models

216 214