mcp-openaiChat with OpenAI models from Claude Desktop

— (0)

Reviewed by Daniel Nikulshyn·Updated July 2026

Overview

mcp-openai is a Model Context Protocol (MCP) server that enables seamless interaction with OpenAI's chat models from within the Claude Desktop app. It supports multiple models, including gpt-4o, gpt-4o-mini, o1-preview, and o1-mini. The server requires a Claude Desktop app installation and an OpenAI API key, which is configured through the claude_desktop_config.json file. To use the server, simply ask Claude to use OpenAI's models, and the server will handle the communication. The mcp-openai server currently supports the following models and message passing interface. Due to its alpha status, the server may have bugs, and users are encouraged to check the Claude Desktop MCP logs for any issues.

Key features

OpenAI chat model integration
Multi-model support
Simple message passing
Basic error handling

Pricing

Model: Free
Category: MCP Servers
Rating: No reviews yet

Use cases

Using OpenAI models in Claude

Users can ask Claude to utilize OpenAI's models, such as gpt-4o or o1-preview, to provide responses to problems or questions.

Seamless model switching

The MCP server allows users to easily switch between different OpenAI models, such as gpt-4o and gpt-4o-mini, while interacting with Claude.

Pros & Cons

Pros

Direct integration with OpenAI's chat models
Support for multiple models
Simple message passing interface

Cons

Alpha software with potential bugs
Requires OpenAI API key and Claude Desktop app

Reviews

No reviews yet. Be the first!

Q&A

Is there any additional cost beyond the OpenAI API usage?

mcp-openai itself is MIT‑licensed and free to use; costs come only from your OpenAI API usage based on the chosen model.

Asked by Celeste Marchetti · Dec 19, 2025

What are the main limitations of using this alpha server?

As alpha software it may contain bugs and basic error handling is provided. Check Claude Desktop’s MCP logs for issues, and be aware that it requires a valid OpenAI API key and a recent Node.js (>=18) environment.

Asked by Rania Nasser · Nov 11, 2025

Which OpenAI models are supported and how do I call them?

mcp-openai supports gpt-4o (default), gpt-4o-mini, o1-preview, and o1-mini. Ask Claude something like "What does gpt 4o think about this?" or "Can you ask o1 what it thinks about this problem?".

Asked by Nikolai Petrenko · Sep 30, 2025

How do I set up mcp-openai with Claude Desktop?

Install Claude Desktop, obtain an OpenAI API key, then add a mcpServers entry in claude_desktop_config.json pointing to the mcp-openai command. The server will start automatically when you need it.

Asked by Linda Petersen · Sep 15, 2025