I also find the model is a lot more predictable and less “glitchy” when made to think in Chinese. You can do this in the system prompt.
I had no issues with it for C++ development with https://pi.dev. I'm yet to try it with Zed Editor. I don't rely on agents too much. However, I used it on Chromium's codebase to research some functionalities, let's say for searching. Requests like: check my last commit and do the same for SetterA and SetterB; it also ran without any errors.
Too little too late imo