#GPT-5(-mini) with Responses API results in error

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pallid dustBOT
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Reported by @fallow iron

Bug Report: GPT-5(-mini) with Responses API results in error
`Steps to Reproduce`
  1. Create a huge data set and upload it to container.
  2. Include container id to payload for prompt.
  3. Let GPT-5(-mini) analyze the data.

That's the first turn.

  1. Use the responseId received from first turn to send the next question related to first turn.
`Expected Result`

Produce and output

`Actual Result`
openai.BadRequestError: Error code: 400 - {'error': {'message': \"Item 'rs_689eaa87a9f88190849e59cd947ec9620fa2d9142b85137b' of type 'reasoning' was provided without its required following item.\", 'type': 'invalid_request_error', 'param': 'input', 'code': None}}"
`Environment`

MacOS, python

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Additional Information

Please provide relevant details to help resolve the issue, such as:

  • ChatGPT Shared Link (if applicable).
  • Screenshots or videos demonstrating the problem.

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fallow iron