Unexpected InvalidArgument error for large response_schema

[Evan_Carothers]

Happening to me as well! Here’s more duplicates:

https://www.googlecloudcommunity.com/gc/AI-ML/Unexpected-400-errors-with-Generated-Output-Schema/td-p/807575

JSON Mode - Internal Server Error 500

I’ve noticed the same thing – happened across Gemini on vertexAI (though the error is a bit different) and AI studio, and it affects the call regardless of if schema is set as response schema object, or using function calling with schema for args. There has to be some hard limit for combined schema size or something as there’s no repeatable rhyme/reason to what specific schema settings will cause this.