Which Claude and ChatGPT plan do you need for custom connectors and MCP servers?

In short

Claude allows custom connectors on Free (one), Pro, Max, Ultra, Team and Enterprise. ChatGPT on Business, Enterprise and Edu, Pro read-only. Checked Nov 2026.

By FezolaPublished November 15, 20262 min read

On this page

Custom connectors, which let an assistant use outside tools through MCP, depend on your plan. Claude allows them on Free (one connector), Pro, Max, Ultra, Team and Enterprise. ChatGPT allows full custom MCP servers on Business, Enterprise and Edu, with Pro limited to reading. This guide is based on the vendors' help pages, read on 14 and 15 November 2026: plans change, so check the linked pages.

Which plan allows what

Checked 14 to 15 November 2026. ChatGPT Plus and Free are not mentioned on OpenAI's page, so we make no claim for them.
Plan	Custom connectors	Who adds them	Limit
Claude Free	Yes, one	The user	A single custom connector
Claude Pro, Max, Ultra	Yes	The user	Per Anthropic's page
Claude Team	Yes	Owners add to the organization	Members connect individually
Claude Enterprise	Yes	Owners and custom roles (Manage access to Libraries)	Members connect individually
ChatGPT Business	Full MCP, with write actions	Admins and owners	Web only
ChatGPT Enterprise, Edu	Full MCP, with write actions	Admins, owners, members through role-based access	Publishing is for admins
ChatGPT Pro	Read and fetch only	The user	No write actions

Claude

According to Anthropic's help page on custom connectors, custom connectors through remote MCP servers are available in Claude on the web, Claude Desktop and Cowork. Free has one custom connector. On Team, only owners add a connector to the organization, and members then connect individually. On Enterprise, owners and custom roles with the Manage access to Libraries permission can add them.

On the Free plan, Anthropic's help page says free users are limited to one custom connector (checked 15 November 2026). A single connector that brings many services behind one URL, like Fezola, therefore fits that limit well: Fezola is free for 2 sources.

ChatGPT

OpenAI's help page on connecting custom MCP servers in ChatGPT lists full MCP support, including write or modify actions, on ChatGPT Business and Enterprise or Edu, on web. On Business, only admins and owners create and publish connections, using the Create plugins with MCPs permission. Pro users can connect custom MCP servers with read and fetch permissions. The path is Settings, Plugins, the plus button, then Add custom MCP server, with a public HTTPS URL and a risk warning to accept. A second page, Connected apps in ChatGPT, notes that an app's availability depends on the app, plan, region, workspace and role.

One URL for both

A hosted MCP connector avoids setting everything up twice: Fezola connects your mailboxes, calendars and other tools once, then one URL goes into Claude and into ChatGPT, with a shared Memory. Each assistant still applies its own plan rules to adding it. Step by step: add an MCP server to ChatGPT and Claude or ChatGPT for email. Fezola is free for 2 sources; Pro is unlimited for $9 a month or $90 a year, with a 7-day free trial.

Create your free Fezola account to get your connector URL.

Questions and answers

Can I add a custom connector on Claude Free?

Yes, one. According to Anthropic's help page, read on 14 November 2026, custom connectors through remote MCP servers are available on Free, Pro, Max, Ultra, Team and Enterprise, and Free has a single custom connector.

Do I need ChatGPT Business to add an MCP server?

For full MCP support, with write actions, OpenAI's help page read on 15 November 2026 lists Business and Enterprise or Edu on ChatGPT web. Pro users can connect custom MCP servers with read and fetch permissions. The page does not mention Plus or Free, so we make no claim for them.

Who can add a connector on a team plan?

On Claude Team, only owners add a connector to the organization, and members then connect individually. On Claude Enterprise, owners and custom roles with the Manage access to Libraries permission can. On ChatGPT Business, admins and owners create and publish connections; on Enterprise and Edu, admins and owners, plus members through role-based access.

Does the same connector work in both?

A hosted MCP connector such as Fezola gives you one URL for both, so you connect your mailboxes once. Each assistant still applies its own plan rules to adding it.

How much do the plans cost?

This guide covers what each plan allows, not the price of Claude or ChatGPT plans: check their pricing pages. Fezola itself is free for 2 sources, and Pro is $9 a month or $90 a year.