Model deprecation dates

Scheduled retirement dates for supported LLM models
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The table below lists the scheduled deprecation dates for models currently available on Synthflow. These dates are set by the upstream model provider and reflect when the provider plans to retire each model.

Synthflow may deprecate a model earlier than the date listed here. The provider may also change their schedule without notice. Check the changelog for the latest updates on model availability.

gpt-4o will be sunset for non-enterprise users on July 10, 2026. If you are using gpt-4o on a non-enterprise plan, migrate your agents to a supported model before this date. See the changelog for details.

ModelDeprecation date
gpt-4oJuly 10, 2026 (non-enterprise) / October 1, 2026 (enterprise)
gpt-4.1-miniOctober 14, 2026
gpt-4.1October 14, 2026
gpt-4.1-nanoOctober 14, 2026
gpt-5-nanoFebruary 6, 2027
gpt-5-miniFebruary 6, 2027
gpt-5.1May 15, 2027
gpt-5.2December 12, 2026
gpt-5.4March 5, 2027
gpt-5.4-miniMarch 18, 2027
gpt-5.4-nanoMarch 18, 2027

Last updated: June 26, 2026