#GPT 5.2 Top_P Not Supported Error

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ornate geode
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Trying to test out GPT 5.2 for my project. Testing in Playground and in API with my project, get a 400 error every time saying Top_P is not supported. But Playground doesnt have a Top P value and my project isn't calling citing or specifying Top_P anywhere. Can't seem to fix

If I make a new prompt it works, but the second I save the prompt in playground, boom, broken and talking about Top_P

"Unsupported parameter: 'top_p' is not supported with this model."

ornate geode