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Model deprecation dates

Scheduled retirement dates for supported LLM models

The table below lists the scheduled deprecation dates for models currently available on Synthflow. These dates are set by the upstream model providers and reflect when each model is planned to be retired.

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.

If you use the OpenAI or Azure integration with your own account, these dates may not apply to you. Check the OpenAI deprecations or the Azure OpenAI retirement schedule for the dates that apply to your account.

ModelDeprecation date
gpt-4.1April 14, 2027
gpt-4.1-miniApril 14, 2027
gpt-4.1-nanoApril 14, 2027
gpt-5-miniFebruary 9, 2027
gpt-5-nanoFebruary 9, 2027
gpt-5.1May 15, 2027
gpt-5.2June 8, 2027
gpt-5.4September 2, 2027
gpt-5.4-miniSeptember 21, 2027
gpt-5.4-nanoSeptember 21, 2027
gpt-6-lunaNot scheduled

Last updated: October 14, 2026