Anthropic keeps advertising its MCP (Model Context Protocol), but to the extent it doesn't support other LLMs, e.g. GPT, it couldn't possibly gain adoption. I have yet to see any example of MCP that can be extended to use a random LLM.
You can use it with any LLM in LibreChat, Cody, Zed, etc. See https://modelcontextprotocol.io/clients. The protocol doesn’t prescribe an LLM, has facilities to sample from the client independent of LLM and brings support to build your own bespoke host in their SDK.
Why is it that there isn't a single example showing its use with GPT?