Do MCP servers work with ChatGPT?

Yes, but support is newer and narrower than in Claude Desktop. OpenAI adopted MCP in March 2025, and ChatGPT now supports remote MCP servers as connectors through developer mode, exposing their tools inside a conversation. Local stdio servers do not work directly in the ChatGPT web interface; you need a remote HTTP endpoint or a local gateway that translates stdio to SSE. Not all clients in the MCPVault compatibility table show a green check for ChatGPT, so filter the directory by ChatGPT before choosing a server. Authentication for ChatGPT connectors usually requires OAuth, which the server must implement. As the integration matures, expect broader coverage.