# OpenAI Codex pricing and usage limits

Verified 2026-10-14. Vendor: OpenAI. Works in: CLI, IDE extension, web, Codex app.

**How limits work:** Included in ChatGPT plans. Plus: estimated local messages per 5-hour window (e.g. GPT-6.1 Sol 15-160, GPT-6 Astra 5-45), weekly limits may apply. Pro: no 5-hour limit currently. Credits extend usage.

| Plan | Price | Usage | Source |
|---|---|---|---|
| Free | $0 | Limited Codex | https://chatgpt.com/pricing |
| Go | $8/mo | Limited Codex; may include ads | https://learn.chatgpt.com/docs/pricing |
| Plus | $20/mo | Expanded Codex; 5-hour message estimates by model | https://learn.chatgpt.com/docs/pricing |
| Pro 100 | $100/mo | No 5-hour limit currently; exact allowance unknown | https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers |
| Pro 200 | $200/mo | More than Pro 100; new subs get lower allowance than before (grandfathering to 2026-10-29) | https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers |
| Pro 500 | $500/mo | Highest allowance; Ultrafast mode | https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers |

Official sources: https://learn.chatgpt.com/docs/pricing, https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers, https://chatgpt.com/codex/pricing/