I stopped using GitHub Copilot extension in VS Code when they introduced their new pricing model, but I should have switched much earlier. The developers have barely a clue how LLMs work and the company structure is misaligned with creating a quality product. They do not perform benchmarks to evaluate whether new "features" are any good and instead bloat the context with more and more tools that are rarely useful and often confuse models.

Eventually, the context window got so bloated that they resorted to hiding function bodies in large files, which is of course a stupid idea because then the LLMs have to use other tools to read the files, wasting even more tokens, or hallucinate the content. Honestly, it is amazing that LLMs work at all in VS Code.

You can inspect the context by pressing F1 and then selecting "Developer: Show Chat Debug View" in VS Code (https://github.com/microsoft/vscode/wiki/Copilot-Issues) and marvel at all the garbage that is in there.