OpenAI Codex plans and usage limits

Vendor: OpenAI

Hit your limit? Codex usage limit reached? What to do

How limits work: Local messages per 5-hour period (published as ranges per model for Plus/Business) plus weekly limits; Pro plans currently have no 5-hour limit. Extra usage via ChatGPT credits.
learn.chatgpt.com checked 2026-10-19

Tool	Plan	Price	Stated usage limits	Window	Included models	Source
OpenAI Codex	Free	$0	not disclosed	not disclosed	GPT-6 Luna (Standard speed, desktop app, subject to rollout)	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Go	$8/mo	not disclosed	not disclosed	GPT-6 Luna (Standard speed, desktop app, subject to rollout)	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Plus	$20/mo	Estimated local messages per 5h: GPT-6.1 Sol 15-160; GPT-6 Sol 15-150; GPT-6 Astra 5-45; GPT-6 Luna 350-3,000. Weekly limits may also apply	5-hour + weekly	GPT-6.1 Sol, GPT-6 Luna (plus GPT-6 Sol/Astra per limits table)	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Pro	$100, $200 or $500/mo tiers	No 5-hour limit currently; weekly limit amounts not disclosed on pricing page. Ultrafast mode on Pro $500	Weekly (5-hour currently off)	GPT-6.1 Sol, GPT-6 Sol, GPT-6 Luna, GPT-6 Astra	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Business	$25/user/mo monthly (lower when billed annually, 2+ users)	Standard Business: same per-model 5h ranges as Plus	5-hour + weekly	GPT-6.1 Sol, GPT-6 Sol, GPT-6 Luna, GPT-6 Astra	learn.chatgpt.com checked 2026-10-19

Changes

2026-10-14 GPT-5.5 retired from Codex with ChatGPT sign-in: GPT-5.5 retires from Codex with ChatGPT sign-in at noon PDT (19:00 UTC). API-key sessions unaffected. learn.chatgpt.com checked 2026-10-19
2026-08-25 5-hour limit restored for Plus: 5-hour limit returned for Plus across Codex and ChatGPT Work; Pro $100/$200 kept without 5-hour limit 'for the upcoming months'. Announced by Codex lead Thibault Sottiaux on X; OpenAI's pricing page now states 'Pro plans currently have no five-hour limit' and publishes Plus 5h estimates. learn.chatgpt.com checked 2026-10-19
2026-07-12 Codex 5-hour window temporarily suspended: OpenAI temporarily removed the 5-hour usage limit for Plus, Business and Pro, leaving weekly limits. OpenAI Support confirmed on the official forum it was temporary, as part of an incident response. community.openai.com checked 2026-10-19