Deadline: December 11, 2026
How to migrate custom GPTs before they retire.
OpenAI retires custom GPTs on December 11, 2026. If your team already built instructions, files, or custom actions into those GPTs, that work has a deadline. Appearly maps each GPT to a plugin or workspace agent and rebuilds custom actions through MCP so the work is not left behind.
What changes on December 11, 2026?
Custom GPTs as a product are being retired. After that date you should not plan on those GPT experiences remaining available. Instructions, knowledge files, and custom actions need a destination that will still be supported — typically a plugin or a workspace agent in ChatGPT Business or Enterprise.
How does Appearly migrate a custom GPT?
- Inventory every custom GPT, its audience, and any custom actions or tools it calls.
- Choose a destination: a plugin, a workspace agent, or both when the use cases split.
- Rebuild custom actions through MCP so connections to your systems keep working.
- Test with the people who already use the GPT, then retire the old configuration before the deadline.
What about custom GPT alternatives?
There is no single drop-in replacement. Workspace agents are the closest ChatGPT-native option for internal teams. Plugins may be a better fit when people outside your workspace need the experience. We will say so if a GPT should simply be retired instead of rebuilt.
When do custom GPTs retire?
OpenAI has said custom GPTs will be retired on December 11, 2026. Work built into those GPTs needs a new home before that date.
What should we migrate to?
The usual destinations are plugins or ChatGPT workspace agents, with custom actions rebuilt through MCP. The right destination depends on how the GPT is used and what tools it calls.
What is the difference between a custom GPT and a workspace agent?
A custom GPT is a configured ChatGPT experience that is being retired. A workspace agent lives in a ChatGPT Business or Enterprise workspace and can use company tools and knowledge. Appearly helps you map one to the other — we are not affiliated with OpenAI.
Do you publish a fixed migration price?
Migration is billed as a fixed fee, starting at $2,500 for a small, clearly bounded inventory. The final quote follows a short review of how many GPTs you have and whether they use custom actions. OpenAI and ChatGPT seat costs are billed separately by OpenAI and are not included.