# Custom GPTs are being retired. Move yours before December 11.

> OpenAI plans to retire custom GPTs on December 11, 2026, with timing that can vary by workspace. We move them to plugins or projects and rebuild custom actions.

URL: https://webvijayi.com/custom-gpt-migration/

## The short answer

OpenAI has scheduled custom GPTs to stop running on December 11, 2026, and is replacing them with plugins. We help teams move the GPTs they rely on to plugins or projects, rebuild any custom actions as connectors, and test that the new versions answer as well as the old ones before the deadline.

*Dates verified on 2026-11-08 from reporting that cites OpenAI's retirement FAQ. OpenAI says timing can vary by account and workspace, so check the notice in your own account.*

## What is changing

- **Custom GPTs stop on December 11, 2026.** OpenAI has scheduled them to stop running on that date.
- **Plugins replace them.** A plugin can include instructions and reference files (skills), tool connections (MCP servers), or both.
- **Custom actions do not transfer.** Any GPT that called your own API or another service needs that connection rebuilt.
- **New custom GPTs are closing.** Creating them has already ended for some workspaces.

## How it works

1. **We list your GPTs.** Which ones exist, who uses them, what files and actions each depends on.
2. **We choose where each one goes.** GPTs with actions or wide use become plugins. Simple ones can become projects in ChatGPT, Claude or Gemini.
3. **We move and rebuild.** Instructions and files move across. Custom actions are rebuilt as an MCP server or an available app connector.
4. **We test side by side.** Your real questions go to the old GPT and the new version, and we fix the differences before your team switches.

## What you get

- An inventory of your GPTs, with a keep, merge or retire decision for each
- Migrated instructions, files and settings
- Custom actions rebuilt as connectors, with access limited to what each needs
- A side-by-side test report
- A short guide for your team on where to find the new versions

## Where it fits

This is for teams that built custom GPTs for internal work (sales scripts, HR answers, report writing, support drafts) and need them working after December 11. If your GPT was really a company knowledge assistant, it may be better rebuilt as [Ask your documents](https://webvijayi.com/services/ask-your-documents/). If it did tasks in other systems, see [AI agents and workflow automation](https://webvijayi.com/services/ai-agents-automation/).

## Price

Your quote: Quoted in writing after a free consultation. Each assistant is priced on its own, with the timeline agreed in the same quote. Custom actions are quoted separately. Full details on the [pricing page](https://webvijayi.com/pricing/).

## Next step

Send us the list of GPTs your team uses, and we'll tell you what moves where.

[Book a free consultation](https://webvijayi.com/contact/#book) · [Get a free quote](https://webvijayi.com/contact/?service=custom-gpt-migration#quote) · [Get your free AI plan](https://webvijayi.com/free-ai-plan/)

## Frequently asked questions

### When do custom GPTs stop working?

OpenAI has scheduled custom GPTs to stop running on December 11, 2026. OpenAI says timing can vary by account and workspace, so check the notice in your own ChatGPT account or workspace settings.

### What replaces custom GPTs?

OpenAI is moving to plugins, which can bundle instructions, reference files (skills) and connections to tools (MCP servers). For simple GPTs that are mostly instructions and files, ChatGPT Projects, Claude Projects or Gemini Gems can also do the job.

### Will my custom actions move over automatically?

No. Reports of OpenAI's guidance say custom actions don't transfer and have to be rebuilt, using an available app or a custom MCP server. That's usually the part that needs a developer.

### Will the new version answer the same way?

Not always. A migrated assistant can respond differently, so we test the old and new versions side by side with your real questions and fix the differences before your team switches.

### We have dozens of GPTs. Do we need to move all of them?

Probably not. Many workspaces have GPTs nobody uses. We list them, find out which are used, and move only those, often merging several into one.

### How much does migration cost?

Every migration is quoted in writing after a free consultation, per assistant, with the timeline agreed in the same quote. Rebuilding custom actions is quoted separately because it depends on the systems involved.