In my experience, there are areas where Gemini did well but Claude didn't, same for o1 pro or o3, but for 90% of the work, I find Claude way more trustworthy, better at following instructions, not making syntax mistakes, etc. Gemini 2.5 Pro is way better than all their prior models, but I don't get the hype about it being a coding superstar. It's not bad, but Sonnet is still the primary workhorse. Sonnet is more expensive, so if Gemini was at the same level I'd be happy to save the money, but unfortunately, I've tried it with various approaches, played with the temperature, but in the vast majority of cases Claude does a better job.