OpenAI plans to retire custom GPTs on Dec. 11, 2026, ending access to the GPTs and their pages for most ChatGPT users. Anyone who relies on a custom GPT for work will need to prepare a replacement before the applicable deadline.

The transition affects all ChatGPT plans, although migration access, permissions and account-specific timelines can differ. FedRAMP workspaces and Enterprise workspaces with qualifying, approved deferrals have until Feb. 11, 2027. Other users should plan around the standard December deadline unless their account notice says otherwise.

Moving a GPT to a plugin is not a guarantee of identical functionality. According to OpenAI’s retirement FAQ , custom actions do not transfer, model selections may change and migrated plugins can respond differently.…