The week: 60 Codex local messages per weekday on GPT-6.1 Sol. 2 five-hour windows a working day.
ForecastChatGPT Plus (Codex)Medium confidence
Cloudy: you may hit the 5-hour limit on Monday to Friday.
Those days land inside OpenAI's range of 30 to 320 messages for 2 five-hour windows (gpt-6.1-sol), so you may or may not hit it.
- Mon (Monday) CloudyInside OpenAI's 30–320 range 60Codex messages
- Tue (Tuesday) CloudyInside OpenAI's 30–320 range 60Codex messages
- Wed (Wednesday) CloudyInside OpenAI's 30–320 range 60Codex messages
- Thu (Thursday) CloudyInside OpenAI's 30–320 range 60Codex messages
- Fri (Friday) CloudyInside OpenAI's 30–320 range 60Codex messages
- Sat (Saturday) ClearNothing planned 0Codex messages
- Sun (Sunday) ClearNothing planned 0Codex messages
OpenAI's range
15–160 local messages per 5 hours on gpt-6.1-sol (official estimate) × 2 windows = 30–320 a day.
Weekly limit
OpenAI says weekly limits may apply; no weekly number is published.
Overflow
Overflow price not published.
No published overflow price in our sources.
Caveats and confidence
Medium confidence OpenAI publishes message ranges per 5 hours for Codex on Plus. Pro tiers only get multipliers and an unpublished weekly allowance.
Figures used: official. See the plan page for each figure's basis and source.
- OpenAI's message counts are its own estimates, given as a wide range per model.
- Vendors change limits often. See the changelog; all figures were checked 20 Oct 2026.
- Read the methodology for how the hit-day range, off-days and the session check work.
FAQ
Is ChatGPT Plus enough for Codex?
Maybe: 60 Codex local messages per weekday on GPT-6.1 Sol lands inside OpenAI's own range of 30 to 320 messages a day for 2 five-hour windows, so on Monday to Friday you may or may not hit the 5-hour limit. OpenAI says weekly limits may apply; no weekly number is published.
Which day would ChatGPT Plus (Codex) run out on this week?
Cloudy: you may hit the 5-hour limit on Monday to Friday. Those days land inside OpenAI's range of 30 to 320 messages for 2 five-hour windows (gpt-6.1-sol), so you may or may not hit it.
What happens when you hit the limit on ChatGPT Plus (Codex)?
No published overflow price in our sources. The overflow price is not published.
What does ChatGPT / Codex (OpenAI) officially say about ChatGPT Plus (Codex) limits?
Chat: GPT-5.5 160 messages per 3 hours, then mini. Codex: OpenAI estimates local messages per 5 hours by model.
How reliable is this answer?
Medium confidence. OpenAI publishes message ranges per 5 hours for Codex on Plus. Pro tiers only get multipliers and an unpublished weekly allowance.