Chat: GPT-5.5 160 messages per 3 hours, then mini. Codex: OpenAI estimates local messages per 5 hours by model.
- Price
- $20/mo
- Billing
- per month
- Window
- 5 hours (Codex) + weekly limits that "may apply"
- Overflow
- No published overflow price in our sources. Overflow price not published.
Capacity figures
| Figure | Value | Kind | Basis |
|---|---|---|---|
| Codex messages per 5 hours, gpt-6-astra | 5–45 | official | OpenAI's own estimate of local messages per 5 hours |
| Codex messages per 5 hours, gpt-6.1-sol | 15–160 | official | OpenAI's own estimate of local messages per 5 hours |
| Codex messages per 5 hours, gpt-6-sol | 15–150 | official | OpenAI's own estimate of local messages per 5 hours |
| Codex messages per 5 hours, gpt-6-luna | 350–3,000 | official | OpenAI's own estimate of local messages per 5 hours |
official: the vendor says so. measured: an independent meter reading. inferred: estimated from measurements. derived: computed by us from other figures. unverified: we could not confirm it.
Sample week: Codex every weekday
60 Codex local messages per weekday on GPT-6.1 Sol.
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.
Sources
- OpenAI Help: ChatGPT Plus limits officialchecked 2026-10-20
- OpenAI Help: Codex usage limits officialchecked 2026-10-20
- ChatGPT pricing docs officialchecked 2026-10-20