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Is there a reliable way to detect when OpenAI silently updates the model behind an existing API version?

This story is from 2026-08-26. It is preserved in the archive; the latest stories are on the live feed.

Had a prompt behave consistently for weeks, then output shape shifted, more hedging, different formatting, a constraint that used to be respected got softer, with zero changes on my end. Best guess is a model update happened behind the version I'm calling, but I have no actual way to confirm that v…

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  1. 2026-08-26 20:35 · r/OpenAI
    Is there a reliable way to detect when OpenAI silently updates the model behind an existing API version?

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