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Fine-tuned 4o errors using the responses API (with image input)

OpenAI Developer Community February 28, 2026
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Yep, Situation abnormal, same long-persisting system as happened weeks ago for weeks.

At top_p:0

  • no response for minutes
  • a response that has vision based text
  • a constant loop of “assistant”

also: complete random inconsistent responses when the model does respond - top_p:0 not working at all to normalize the output. Have to go with temp and top p: 0.01. To get the same amount of assistant message spam until max_output_tokens.

Discussion in the ATmosphere

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