Update to OpenAI’s self-serve fine-tuning

Takes effect

6 Jan 2027

Published

4 Oct 2026

On May 7th, 2026, we notified developers using OpenAI’s self-serve fine-tuning platform of updates to availability. Inference on fine-tuned models will continue to be available until the base models are deprecated. Date Update May 7, 2026 Creating fine-tuning jobs or training is not available to organizations that have not previously run fine-tuning. July 2, 2026 Creating fine-tuning jobs is no longer available to organizations that have not run inference on a fine-tuned model in the past 60 days. Jan 6, 2027 Active existing customers will no longer be able to create new fine-tuning jobs on this date. Inference on fine-tuned models will be disabled only when the underlying base model is deprecated. Past deprecations Past deprecations are listed below, with the most recent announcements at the top.

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