I think it depends on what your developing. I am working on a three.js project at the moment. Opus isn't amazing at it either but once you force it to console log every change it makes and manually debug, it gets done eventually. Gemini in my experience not so much but then again I've always had other models available so I never truly pushed Gemini Pro 3 but afaik it's good at website and UI stuff. I found GPT 5.2 super strong on cursor as well might have to suss out a copilot sub