Copilot did a giant leap imo, when Sonnet 4 arrived. BUT, I do have a lot of tempeorary problems where it just stops responding. Last week was awful, today though worked perfectly. I both vibe-coded a very wide (TUI, GUI, WEBUI, CLI, backend etc) python util for our specific product+environment and solved a bug in parallell using Sonnet 4 and GTP 4.1. I tried going to Sonnet when GPT fscked up, and its just hilarious. GPT can try sometimes to fix things 5 times in a row, Sonnet just directly fixes it. If only the enterprise quota was infinite.... :)