Regarding the IQ issue of Copilot.

[wzh5550123]

"Why is it that the IQ of Copilot is noticeably lower when using the same Claude Sonnet 4 model? It struggles to write correct code, whereas switching to the Claude Code model with the same setup can solve problems quickly. Is it possible that the upstream vendor has intentionally limited Copilot's intelligence?"

[vs-code-engineering]

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