"Is GPT-5 fine-tuning available? Which models currently support fine-tuning?"

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I’m working with OpenAI’s API and have recently started using GPT-5 models in my application. I’m interested in fine-tuning capabilities but couldn’t find clear documentation about GPT-5 support.

My questions:

  1. Are GPT-5 models (like gpt-5-o, gpt-5-turbo) currently available for fine-tuning through the OpenAI API?

  2. If fine-tuning isn’t supported yet for GPT-5, is there a timeline for when it might be available?

  3. What is the current list of models that support fine-tuning? I want to understand my options if GPT-5 fine-tuning isn’t available yet.

  4. Are there any technical reasons why newer models might not immediately support fine-tuning upon release?

I’m trying to decide whether to proceed with my current implementation or wait for GPT-5 fine-tuning capabilities. Any insights or pointers to official documentation would be really helpful!

Thanks in advance!

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