PROBLEM

MCP - ChatGPT 5.5 shows promise on some workloads vs

ChatGPT 5.5 shows promise on some workloads vs Claude but has friction with tool calling and MCP server integration requiring dev mode.

Updated: 5/15/2026

ChatGPT 5.5 is starting to cook on a few workloads I moved from Claude. I don’t like all the tool call results or forced dev mode for my MCP server ‘ooh spooky too scary’, but it’s getting there. Source: https://x.com/PatrickMoorhead/status/2049464403506901259

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