Does CoPilot have full functionality of ChatGPT 4 ?

Thanks for posting your question in the Microsoft Q&A forum.

I think you mean powered by GPT-4. It means that the responses you receive are generated using the advanced capabilities of GPT-4. Both ChatGPT-4 and CoPilot using GPT-4 and support full functionality of GPT-4 but they have different trained model. As CoPilot has different version for different tools with different content to train their models.

https://support.microsoft.com/en-us/topic/chatgpt-vs-microsoft-copilot-what-s-the-difference-8fdec864-72b1-46e1-afcb-8c12280d712f

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