The API provider returned a lower number of translations

If you get the following error message in the logs:

Error [Query "translate-customposts"] Execution with errors: 🔴 Translation to pt_PT failed - The API for provider 'ChatGPT' returned an array with a lower number of translations than the number of strings to translate

That is because the API provider returned a lower number of translations than the number of strings to translate. Simply run the translation again.

If you keep getting this error message, it's because that model is not reliable, and you should try a different model.

For instance, if you are using ChatGPT-5 mini, then switch to ChatGPT-5, and try again.

This issue will most likely happen with very long posts, which are split into multiple requests. Any single request that fails will cause the entire translation to fail.