Use the tool below to check if your ChatGPT (OpenAI) API Key works or not, or still valid or not.

There are several causes that makes the API Key not working.

This may happens several times. OpenAI is an extremely popular service with millions of people use it not just every day, but every minute. And sometimes their server get overloaded:

- https://community.openai.com/t/gpt-3-5-turbo-the-server-is-overloaded-or-not-ready-yet-errors/283196
- https://community.openai.com/t/openai-error-serviceunavailableerror-the-server-is-overloaded-or-not-ready-yet/32670

When it happens, the solution is just to wait a few seconds or minutes. Their server is rarely down for more than 60 seconds.

OpenAI gives some free Credits for a new user, and when the free Credits has been used then you'll need to setup a Payment option to use their service. You can check your Credits limits and Billing on this page: https://platform.openai.com/account/billing