OpenAI self-serve fine-tuning

Developer tool at OpenAI

Breaking change

Takes effect Jan 6, 2027 · in 66 days

Self-serve fine-tuning closed to new users, ends for all on January 6, 2027

From May 7, 2026, organizations that never ran fine-tuning cannot start. From July 2, 2026, organizations without fine-tuned inference in the past 60 days cannot create jobs. On January 6, 2027, all new fine-tuning jobs stop. Inference continues until base models are deprecated.

Who is affected:
Teams that train fine-tuned OpenAI models.
Action needed:
Plan for no new fine-tuning jobs after January 6, 2027.

Source

"Creating fine-tuning jobs or training is not available to organizations that have not previously run fine-tuning."

OpenAI API deprecations page

Published

Open the sourcedevelopers.openai.com

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