> For a complete page index, fetch https://docs.synthflow.ai/llms.txt. For full documentation content, fetch https://docs.synthflow.ai/llms-full.txt.

# Model deprecation dates

> View the scheduled deprecation dates for LLM models available on Synthflow, and plan your migration accordingly.

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](/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](/changelog) for details.

| Model        | Deprecation date                                              |
| ------------ | ------------------------------------------------------------- |
| gpt-4o       | July 10, 2026 (non-enterprise) / October 1, 2026 (enterprise) |
| gpt-4.1-mini | October 14, 2026                                              |
| gpt-4.1      | October 14, 2026                                              |
| gpt-4.1-nano | October 14, 2026                                              |
| gpt-5-nano   | February 6, 2027                                              |
| gpt-5-mini   | February 6, 2027                                              |
| gpt-5.1      | May 15, 2027                                                  |
| gpt-5.2      | December 12, 2026                                             |
| gpt-5.4      | March 5, 2027                                                 |
| gpt-5.4-mini | March 18, 2027                                                |
| gpt-5.4-nano | March 18, 2027                                                |

*Last updated: June 26, 2026*