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Thanks for the reply. Native output is indeed what I'm shooting for. I can't share the model directly right now, but putting together a min-repro and moving towards and actual bug report is something on todo list.

One thing I can say though.. my models differ from the docs examples mostly in that they are not "flat" with simple top-level data structures. They have lots of nested models-as-fields.

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Thanks, a reproducible example would be very useful. Note that earlier this month I made Pydantic AI try a lot harder to use strict JSON mode (in response to feedback from Python creator Guido of all people: https://github.com/pydantic/pydantic-ai/issues/2405), so if you haven't tried it in a little while, the problem you were seeing may very well have been fixed already!

> https://github.com/pydantic/pydantic-ai/issues/2405

Thanks, this is a very interesting thread on multiple levels. It does seem related to my problem and I also learned about field docstrings :) I'll try moving my dependency closer to the bleeding edge

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