OpenAI
ChatGPT Chat & uploads, without the guesswork.
Messages, uploads & model limits
Where to check your allowance
Read the limit banner and any reset time shown in your account.
ChatGPT Work and Codex share an allowance for the same account and workspace. Chat model and upload limits can be separate. Switching between Work and Codex does not create extra allowance.
ChatGPT Chat & uploads guides & checklists
Usage limits
Understanding ChatGPT usage limits
Find out which limit you reached before deciding what to do next.
TroubleshootingChatGPT file upload limit reached
Separate upload frequency, storage and individual file restrictions.
Troubleshooting“Reached concurrency limit” in ChatGPT
A practical checklist for a task that will not start.
TroubleshootingYour limit has not reset. What now?
Check the time, the window and the account before reporting a fault.
TroubleshootingUpstream connection or reset errors
The word “reset” in a connection error is not an allowance reset.
Reset basicsAPI rate limits vs. subscription limits
Identify which billing system and allowance your request uses.