Matrix / Works in / Claude vs ChatGPT

Claude vs ChatGPT for sales: which connects to more tools listed here?

Updated 2026-11-02. This text was written on that date. Each listing keeps its own checked date.

84 of the 92 listed sales and GTM tools have an official MCP server confirmed for Claude, and 67 for ChatGPT. 65 are confirmed for both. The newest listing check is November 2, 2026. Older rows keep their own date.

StackMCP is an independent directory. We don't sell either assistant. Confirmed means the vendor's own docs say the official MCP server works in that app. Not confirmed means those docs don't say. It doesn't mean no.

The count, by category

Each number is a count of listed tools in that category whose vendor docs confirm that app. The same rule builds the Claude and ChatGPT pages. A bold category is one where those two counts differ. The other three columns use the same listings.

Tools confirmed for only one

Confirmed for only one means the listing is yes for that assistant and not yes for the other. It is not a claim that the other app cannot connect.

Confirmed for Claude, not confirmed for ChatGPT

• Artisan Cold Email & Outreach.
• Customerly Customer Support.
• Findymail Prospecting & Lead Data.
• Gmail Email & Calendar. Developer Preview. Needs the Google Workspace Developer Preview Program and your own OAuth client ID and secret.
• Google Calendar Email & Calendar. Developer Preview. Needs the Google Workspace Developer Preview Program and your own OAuth client ID and secret.
• HeyReach LinkedIn Automation & Scraping.
• Instantly Cold Email & Outreach.
• Intercom Customer Support.
• Perplexity AI Research.
• Prospeo Prospecting & Lead Data.
• Resend Email Sending.
• Selzy Email Sending.
• Similarweb Market Research.
• Slack Team Messaging.
• Surfe Prospecting & Lead Data.
• Tavily AI Research.
• Vibe Prospecting Prospecting & Lead Data.
• Warmly Intent & Company Signals.
• Wiza Prospecting & Lead Data.

2 of the 19 are a Developer Preview. They stay in the confirmed counts.

Slack's MCP page names its partner clients. ChatGPT is not in that list. ChatGPT has its own Slack app. OpenAI says eligible Plus, Pro, Business, Enterprise, and Edu users can connect it. This directory does not list that app as Slack's MCP server.

The Slack MCP server is available in these select partner-built clients, no coding needed: ... Claude.ai ... Claude Code ... Perplexity Cursor

The ChatGPT Slack app connects Slack to ChatGPT so you can search messages, threads, and channels you already have permission to access.

Eligible Plus, Pro, Business, Enterprise, and Edu users can connect Slack:

Gmail and Google Calendar are on the Claude list because Google's docs name Claude. ChatGPT is not confirmed for those MCP servers. ChatGPT can connect Google apps such as Gmail, Calendar, and Drive. This directory does not list those apps as Google's MCP servers.

When you connect a Google app such as Gmail, Calendar, or Drive, ChatGPT can access information needed for the supported requests you make, subject to your Google account permissions and workspace settings.

Developer Preview: Available as part of the Google Workspace Developer Preview Program, which grants early access to certain features.

Membership in the Google Workspace Developer Preview Program.

To add the Gmail remote MCP server to Claude, configure a custom connector with an OAuth client ID and secret.

Developer Preview: Available as part of the Google Workspace Developer Preview Program, which grants early access to certain features.

Membership in the Google Workspace Developer Preview Program.

To add the Google Calendar remote MCP server to Claude, configure a custom connector with an OAuth client ID and secret.

Confirmed for ChatGPT, not confirmed for Claude

• Dynamics 365 CX MCP Server - Sales CRM & Deal Management.
• FlashCrafter Growth Briefs Local Marketing.

Your CRM in Claude and ChatGPT

9 CRM tools are listed. 8 are confirmed for Claude and 9 for ChatGPT. 8 are confirmed for both. The table covers four of them. All CRM servers. HubSpot vs Salesforce.

Gong's help page says it has native MCP server integrations for Claude, ChatGPT, and Microsoft Copilot. The same page says team members need a plan that supports custom MCP connections. Its ChatGPT list includes Plus. OpenAI's custom MCP article names Business and Enterprise/Edu for full support, and Pro for read and fetch permissions. The quotes are side by side.

Gong has native MCP server integrations for Claude, ChatGPT, and Microsoft Copilot.

Team members have a subscription on a plan that supports custom MCP connections:

Claude: Pro, Max, Team, or Enterprise

ChatGPT: Plus, Pro, Business, Enterprise, or Edu

Custom MCP server connections and full MCP support are available for ChatGPT Business and Enterprise/Edu customers on ChatGPT web.

Pro users can connect custom MCP servers with read/fetch permissions.

What plan do you need?

The cells quote the assistant's own help, or a vendor when that vendor names an assistant plan. Cost and plans uses the same Claude and ChatGPT plan quotes. Checked dates are on each quote.

Team approval steps are in the "Who can add one on a team plan" row above. IT approval is a separate checklist for the sales tool, not for the assistant's plan. Start here has the connection steps.

18 of 98 official listings are read-only on Read vs write. That count includes variant rows, so it uses 98 listings, not the 92 tools above. Asking for approval in the assistant is not the same as a read-only server.

Cursor, Claude Code, and Copilot

• Claude Code: 53 listed tools confirmed.
• Cursor: 56 listed tools confirmed.
• GitHub Copilot: 22 listed tools confirmed.

Copilot on this site means GitHub Copilot.

Which fits your situation

Categories where the two confirmed counts differ: Prospecting & Lead Data, Claude 17 and ChatGPT 12. AI Research, Claude 3 and ChatGPT 1. Cold Email & Outreach, Claude 6 and ChatGPT 4. Customer Support, Claude 2 and ChatGPT 0. Email & Calendar, Claude 2 and ChatGPT 0. Gmail and Google Calendar are a Developer Preview. Google requires membership in the Google Workspace Developer Preview Program, and Claude setup uses your own OAuth client ID and secret. Email Sending, Claude 3 and ChatGPT 1. CRM & Deal Management, Claude 7 and ChatGPT 8. Intent & Company Signals, Claude 8 and ChatGPT 7. LinkedIn Automation & Scraping, Claude 3 and ChatGPT 2. Local Marketing, Claude 0 and ChatGPT 1. Market Research, Claude 2 and ChatGPT 1. Team Messaging, Claude 1 and ChatGPT 0.

If you need to paste your own server URL, see the "Paste your own server URL" row above. Claude's Free plan allows one custom connector. ChatGPT's full custom MCP support is for Business and Enterprise/Edu on the web, and Pro can connect with read and fetch permissions. If the CRM is Dynamics 365 Sales, the connect article names ChatGPT and Claude Code. Claude, the claude.ai app, is not confirmed on that listing.

This page does not rank the assistants on writing. The count is only the official GTM MCP servers listed here.

How we count

A tool is confirmed when its listing's clients value is yes. That value is set from the vendor's docs, and the tool page links the page we read. Unknown stays not confirmed. These counts use one row per tool, the same list as the works-in pages. The directory has 98 official listings across 92 tools. Variant rows are not counted again. The page is rebuilt from the listings when the site is built. The daily job checks endpoints. It does not re-read every vendor doc. How we check.

Questions

Does Claude or ChatGPT work with more listed sales tools?

84 of 92 listed tools are confirmed for Claude, and 67 for ChatGPT. 65 are confirmed for both. 17 more tools are confirmed for Claude than for ChatGPT. The newest listing check is November 2, 2026. A missing confirmation is not a no.

What plan do I need to connect a sales tool?

Claude's help center says custom connectors are on Free, Pro, Max, Ultra, Team, and Enterprise, and that free users are limited to one custom connector. OpenAI's help article says full custom MCP support is for Business and Enterprise/Edu on ChatGPT web, and that Pro users can connect custom MCP servers with read and fetch permissions. That article says custom MCP servers are web only. It does not name Free or Plus. A vendor can add its own rule. HubSpot's Claude article requires a paid Anthropic subscription. HubSpot's ChatGPT article says the connector is available to all HubSpot customers across all tiers with an OpenAI account.

Can a free Claude or ChatGPT account connect a sales tool?

Claude's help center says custom connectors are available on the Free plan, and that free users are limited to one custom connector. OpenAI's custom MCP article names Business, Enterprise/Edu, and Pro. It does not name Free or Plus for a custom MCP server. Whether a directory app is available in ChatGPT depends on the app, the plan, the region, the workspace, the role, the model, and the interface.

Who has to approve connectors on a team plan?

In Claude, an Owner or Primary Owner enables a connector for the organization, and each person then authenticates. On Team, only Owners and Primary Owners can add custom connectors. On Enterprise, a person with a custom role that includes Manage access to Libraries can too. Member requests are on by default on Team and off by default on Enterprise. In ChatGPT Business, only admins and owners can create and publish plugins for custom MCP servers. Enterprise and Edu admins can grant creation rights with RBAC, and then choose who can access each vetted app.

Can I stop the assistant from changing records?

In Claude, Team and Enterprise owners can set each permission category or permission to Always allow, Needs approval, or Blocked. The help center says individual users can't override that org setting. In ChatGPT, permission choices include Always ask, Allow read actions, and Allow low-risk actions. Allow all actions is not offered in the standard account-wide or workspace-wide selectors. Enterprise and Edu admins can enable or disable app actions after publishing. New actions are disabled by default. Claude's help center says Claude inherits each person's permissions from the connected service.

Does either assistant train on connected data?

Anthropic's consumer article names Claude Free, Pro, and Max. It says we will use chats and coding sessions, including to improve models, if you choose to allow that use. The same article says raw connector content, including remote and local MCP servers, is not included unless it is copied into the chat. Anthropic's commercial article says inputs and outputs from commercial products are not used to train models by default, and that feedback is a separate choice. OpenAI says Business, Enterprise, and Edu app data is not used to train models by default. For Free, Plus, Go, and Pro, OpenAI may use information accessed from apps if Improve the model for everyone is on. OpenAI's Google app article says it does not train its generalized models on data accessed directly from connected Google apps, even if that setting is on.

What about Cursor, Claude Code, and Copilot?

The same listings confirm 56 tools for Cursor, 53 for Claude Code, and 22 for GitHub Copilot. Copilot here means GitHub Copilot. Each works-in page lists the tools whose vendor docs confirm that app.

When a listing adds Claude or ChatGPT

The weekly email includes listing changes. A new Claude or ChatGPT confirmation is a listing change. This form does not send a separate alert for one tool. Newsletter.