Structured outputs - worked yesterday, broken today

API Bugs
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1

A batch request for structured outputs from 4o-mini that worked yesterday, today fails as an invalid request.

“Invalid schema for response_format ‘Papers’: Expected at most total 7500 characters in a single enum property when using structured outputs, but received 7590. Consider reducing the length of the enum value, or use ‘strict: false’ to opt out of structured outputs.”

I tried re-running some of my examples from yesterday, today they fail. Same exact batch file.

Has this been limited overnight?

2

Also not sure what it’s referring to with the 7590 characters, the enum is described by around ~13k characters, which is around ~2.8k tokens. Can’t find anything ~7.6k characters.