Rate limit issues (GPT for Sheets – Autosheet)
Service invoked too many times
Problem: Google reports that a service quota has been exceeded. Check the service named in the full error message. If it refers to daily URL Fetch calls, the documented quotas are:
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Consumer accounts, such as gmail.com: 20,000 calls per day
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Google Workspace accounts: 100,000 calls per day
These quotas apply per user across scripts and add-ons. Google can change them, and trial accounts can have additional restrictions. A short-term rate-limit error or a quota for a different service needs different troubleshooting.
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For a daily quota, wait for it to reset. Google documents the reset as 24 hours after the first request, rather than at a fixed midnight boundary.
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For a Google Sheets custom-function URL Fetch quota, try bulk tools, which do not run as custom functions. Other limits can still apply.
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GPT for Excel – Autosheet functions do not use Google Apps Script quotas. Other limits can still apply.
Token limit is reached

Problem: Your AI provider reports that you have reached a token limit, such as tokens per minute or per day.
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Wait until the token limit resets. The reset time depends on the quota you reached; check the provider's error message or usage dashboard. A different model may have a separate quota.
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Alternatively, use built-in models, which do not require your own API key. Other limits can still apply.
Request limit is reached

Problem: Your AI provider reports that you have reached a request limit, such as requests per minute or per day.
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Wait until the request limit resets. The reset time depends on the quota you reached; check the provider's error message or usage dashboard. A different model may have a separate quota.
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Alternatively, use built-in models, which do not require your own API key. Other limits can still apply.