I think it's just very dependent on what you're doing. Claude 3.5/3.7 Sonnet (thinking or not) were just absolutely terrible at almost anything I asked of it (C/C++/Make/CMake). Like constantly giving wrong facts, generating code that could never work, hallucinating syntax and APIs, thinking about something then concluding the opposite, etc. Gemini 2.5-pro and o3 (even old o1-preview, o1-mini) were miles better. I haven't used Claude 4 yet.

But everyone is using them for different things and it doesn't always generalize. Maybe Claude was great at typescript or ruby or something else I don't do. But for some of us, it definitely was not astroturf for Gemini. My whole team was talking about how much better it was.