GUIDES · COMPATIBILITY
Which assistants work with AI Twin.
Last verified
Your Twin connects to any assistant that supports user-added remote connectors on the Model Context Protocol, using one address:
https://ai-twin.app/mcp
Table last verified
| Assistant | Works today | Needs | Called there |
|---|---|---|---|
| Claude | Yes | Any plan; the free plan allows one custom connector | Customize, Connectors, Add custom connector |
| ChatGPT | Yes, with conditions below | Business, Enterprise or Edu for full read and write (beta, admin turns it on); Pro read-only; not Plus or Free; developer mode on the web | Settings, Apps, Advanced settings, Developer mode |
| Perplexity | Not yet for remote connectors | Local MCP works in the Mac app. Remote MCP is listed as coming soon. | Mac app, local MCP |
| Le Chat (Mistral) | Yes | Check your plan in-app | Custom connector |
| Grok | Yes | Any Grok account. On Business and Enterprise an admin sets the connector up first. | grok.com/connectors, New Connector, Custom |
| Gemini | Reported, not in Google's consumer help | Google's consumer help pages do not document custom MCP as of 17 October 2026. Third-party guides report an 'Add a custom app' option under Connected Apps on the Gemini web app, limited by plan and region (reported as AI Ultra and US). Check in your own account. | Connected Apps, Add a custom app (reported) |
| Copilot (consumer) | Not yet | No consumer route for user-added connectors | n/a |
The ChatGPT conditions, stated fully
Custom connectors in ChatGPT need developer mode, set up on ChatGPT on the web under Settings, Apps, Advanced settings, Developer mode. Full read and write is a beta on Business, Enterprise and Edu, once an admin turns it on; Pro gets developer mode with read-only access; Plus and Free do not have it. OpenAI has not published a UK block on developer mode. This is a staged beta and the toggle does not appear on every eligible account yet. If you do not see it, that is usually rollout, plan, or browser rather than a permanent no; try another browser, confirm you are on Pro or a Business, Enterprise or Edu workspace on the web, and check again in a few days. If it still does not appear, a ChatGPT Business or Enterprise workspace admin can add the connector for the whole workspace instead. We do not recommend VPNs or region workarounds; they breach OpenAI's terms.
One more ChatGPT particular: developer mode chats do not read ChatGPT's saved memories, so your Twin's name and rules live in Custom Instructions there. Prompting your Twin includes the compressed Master Prompt, sized to fit.
If your assistant is not listed
If it can add a remote MCP connector by URL, it can almost certainly reach your Twin: give it the address above and approve its tool requests. If you get it working somewhere new, tell us at hello@ai-twin.co.uk and this page gains a row.