The sentiment in this thread surprises me a great deal. For me, Gemini 2.5 Pro is markedly worse than GPT-5 Thinking along every axis of hallucinations, rigidity in its self-assured correctness and sycophancy. Claude Opus used to be marginally better but now Claude Sonnet 4.5 is far better, although not quite on par with GPT-5 Thinking.
I frequently ask the same question side-by-side to all 3 and the only situation in which I sometimes prefer Gemini 2.5 Pro is when making lifestyle choices, like explaining item descriptions on Doordash that aren't in English.
edit: It's more of a system prompt issue but I despise the verbosity of Gemini 2.5 Pro's responses.
I frequently ask the same question side-by-side to all 3 and the only situation in which I sometimes prefer Gemini 2.5 Pro is when making lifestyle choices, like explaining item descriptions on Doordash that aren't in English.
edit: It's more of a system prompt issue but I despise the verbosity of Gemini 2.5 Pro's responses.