speed.md Codex Docs, 2026-04-29 00:50 UTC → 2026-05-07 20:02 UTC

11rate for GPT-5.4.11rate for GPT-5.4.

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13Use `/fast on`, `/fast off`, or `/fast status` in the CLI to change or inspect13Use `/fast on`, `/fast off`, or `/fast status` in the CLI to change or inspect

14the current setting. You can also persist the default with `service_tier = "fast"` plus `[features].fast_mode = true` in `config.toml`. Fast mode is14the current setting. You can also persist the default with `service_tier =

15"fast"` plus `[features].fast_mode = true` in `config.toml`. Fast mode is

15available in the Codex IDE extension, Codex CLI, and the Codex app when you16available in the Codex IDE extension, Codex CLI, and the Codex app when you

16sign in with ChatGPT. With an API key, Codex uses standard API pricing instead17sign in with ChatGPT. With an API key, Codex uses standard API pricing instead

17and you can't use Fast mode credits.18and you can't use Fast mode credits.

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19[20<VideoPlayer

20Your browser does not support the video tag.21 src="/videos/codex/fast-mode-demo.mp4"

21](/videos/codex/fast-mode-demo.mp4)22 class="[&_video]:mx-auto [&_video]:max-h-[400px] [&_video]:max-w-full [&_video]:w-auto"

23/>

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23## Codex-Spark25## Codex-Spark

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