Quick answer
Codex credits let you keep working after you hit a plan limit. OpenAI prices them per million tokens for each model, and the purchase price depends on your plan. Plus and Pro users can buy them once a limit is reached.
How credits work
- When a window runs out, Codex can draw from credits instead of stopping.
- Each model has its own credit rate per million tokens, so bigger models use credits faster.
- The Codex pricing page lists the rates.
Watch your balance
UsageAtlas shows your Codex credit balance next to the five-hour and weekly windows. Check it before a long run so you know whether the balance will carry you past the limit.
Credits or a bigger plan?
If you buy credits once or twice a month, they cost less than an upgrade. If you buy them every week, compare that spend with ChatGPT Pro.
Questions, answered
What are Codex credits?
Prepaid usage that keeps Codex running after a plan limit. They are priced per million tokens for each model.
Can ChatGPT Plus users buy Codex credits?
Yes. Plus and Pro users can buy credits after hitting a limit.
Where can I see my Codex credit balance?
On the Codex usage page on chatgpt.com, or in UsageAtlas next to your Codex windows.