Codex Pro 100 ($100): limits and pricing
Verified 2026-10-26 against OpenAI Help and Codex pricing. Every value links to its source. OpenAI publishes no per-tier allowance numbers.
Short answer
Pro 100 is $100/month. Like all Pro plans it currently has no five-hour limit; weekly limits may also apply. Ultrafast is not included, and buying credits does not unlock it. GPT-6.1 Sol and GPT-6.1 Terra are available in Work and Codex. OpenAI ranks it as the lowest included usage of the three Pro tiers.
| Fact | Value | Source |
|---|---|---|
| Price | $100/month | OpenAI checked 2026-10-26 |
| Billing | Monthly only (no annual) | OpenAI checked 2026-10-26 |
| 5-hour limit | Pro plans currently have no five-hour limit | OpenAI checked 2026-10-26 |
| Weekly limit | Weekly limits may also apply (size not published) | OpenAI checked 2026-10-26 |
| Ultrafast | Not included | OpenAI checked 2026-10-26 |
| Ultrafast note | Buying credits does not unlock Ultrafast | OpenAI checked 2026-10-26 |
| Fast mode burn | 2.5x the Standard rate of included allowance | OpenAI checked 2026-10-26 |
| Models (verified) | GPT-6.1 Sol and GPT-6.1 Terra in Work and Codex | OpenAI checked 2026-10-26 |
| Relative usage | Lowest of the three Pro tiers | OpenAI checked 2026-10-26 |
| Credits after included | Eligible features can continue on purchased credits | OpenAI checked 2026-10-26 |
| Support resets | Support cannot reset ChatGPT or Codex limits | OpenAI checked 2026-10-26 |
Limits on these plans change without notice. Get one email when they do.
Related Pro tiers
Pro 200 ($200) · Pro 500 ($500, Ultrafast) · 100 vs 200 vs 500
FAQ
Does Codex Pro 100 have a five-hour limit?
Pro plans currently have no five-hour limit. (OpenAI Codex pricing, checked 2026-10-26)
Does Pro 100 include Ultrafast?
No. Among Pro plans, Ultrafast is available only on Pro 500. Buying credits on Pro 100 does not unlock Ultrafast. (OpenAI Help, checked 2026-10-26)
Compare Pro 100 vs 200 vs 500 · All comparisons · Changelog