For agencies, MSPs & consultants

Your clients’ custom GPTs, moved under your name.

Last updated November 13, 2026 · By Chris Tabb, founder · Sources checked November 13, 2026

If you built custom GPTs for clients, or your clients keep asking what happens to theirs, Appearly can do the migration work for you. OpenAI has scheduled custom GPTs to retire on December 11, 2026. We work white-label behind you, or you refer the client and we take it from there. Either way, everything outside the ChatGPT work stays with you. We are not affiliated with OpenAI.

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§ 01

Two ways to work with us

Not sure which fits? Email us and we will talk it through on a 20-minute call.

	White-label	Referral
Who the client talks to	You. We work behind you.	Us, with you copied.
Who invoices the client	You. We invoice you.	Appearly.
Price	Fixed fee from $2,500 per project, quoted per batch of GPTs	Our published prices: migration from $2,500
What you get	Delivery capacity before December 11	A referral fee (terms on a call)
After the project	The client stays yours	We hand the client back to you for everything outside the ChatGPT work

§ 02

What we do on each GPT

Inventory: list every GPT, who created it, which account or workspace it lives in, and whether it uses custom actions. Only the creator (or an Enterprise workspace admin) can migrate a GPT.
Finish and publish any edits first. OpenAI's migration uses the latest published version; drafts do not transfer, and the original becomes read-only once migrated.
Migrate to plugin. Instructions become a skill, knowledge files become reference files, connected apps come across. Where a Project fits better, we say so.
Rebuild custom actions. They do not transfer. We check for an available app first, and build a custom MCP server only when the job needs it.
Test against the client's familiar prompts and at least one harder case before anyone switches.
Reshare. The plugin starts private, so we restore access for the right users or groups and help replace old GPT links.
Hand over a short record of what moved, what changed, and who maintains it.

Our honest take
Appearly is new and has no partner case studies yet. We would rather tell you that than invent any. Judge us on a 15-minute look at one real GPT.

§ 03

Who this is for

Need the details first? Our migration checklist is free, and the migration service page lists what is included.

Agencies and studios that sold custom GPT builds and now have a backlog of client GPTs to move.
MSPs and IT consultants whose clients run ChatGPT Business or Enterprise and ask about the retirement.
Fractional operators and marketing consultants who set up GPTs for clients and don't want to do the rebuilds.

§ Brief

The forwardable brief

Paste this into an email to any client with custom GPTs. Edit the "we" to suit you. Every fact in it comes from OpenAI's retirement FAQ.

Subject: Your custom GPTs and the December 11, 2026 retirement

OpenAI has scheduled custom GPTs to retire on December 11, 2026. On that date custom GPTs and their GPT pages become inaccessible. (FedRAMP workspaces and Enterprise workspaces with an approved deferral have until February 11, 2027.)

OpenAI's path is to migrate each GPT to a plugin. Its instructions become a skill and its knowledge files become reference files. Custom actions do not transfer and have to be rebuilt. The new plugin starts private, so everyone who used the GPT has to be given access again. Migration uses the GPT's latest published version, and only the GPT's creator (or, in an Enterprise workspace, an admin) can run it.

We work with Appearly (appearly.app), an independent ChatGPT consultancy, to handle this for clients. They inventory your GPTs, migrate the ones worth keeping, rebuild custom actions where needed, test each plugin against your usual prompts, and reshare it with the right people. It is a fixed fee, starting at $2,500, quoted after a short look. Appearly is not affiliated with OpenAI.

Free checklist if you'd rather do it in-house: https://appearly.app/custom-gpt-migration/checklist
OpenAI's FAQ: https://help.openai.com/en/articles/20001519

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§ FAQ

Questions we hear

Do you pay a referral fee?

Yes. Partners who refer a client earn a referral fee. We agree the terms on a short call before the first referral.

What does white-label migration cost?

A fixed fee starting at $2,500 per project. We quote each batch after a 15-minute look at the GPTs, their actions and where they live. OpenAI seats are billed by OpenAI.

Will you contact my client directly?

Not on white-label work. You own the relationship; we work through you. On referrals we keep you copied and hand the client back for everything outside the ChatGPT work.

When do custom GPTs stop working?

OpenAI has scheduled custom GPTs to retire on December 11, 2026, when custom GPTs and their GPT pages become inaccessible. FedRAMP workspaces and Enterprise workspaces with an approved deferral have until February 11, 2027.

Do custom actions carry over to the plugin?

No. OpenAI says custom actions do not transfer through migration and need a replacement, such as an available app or a custom MCP server.

Is Appearly an OpenAI partner?

No. Appearly is an independent consultancy and is not affiliated with OpenAI. ChatGPT is a trademark of OpenAI.

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Sources · checked November 13, 2026

OpenAI figures are OpenAI’s, quoted as published on the date checked. Appearly is not affiliated with OpenAI. ChatGPT is a trademark of OpenAI.