Gemini 2.0 Flash Thinking vs Gemini 2.5 Flash Preview (thinking)

Compare Gemini 2.0 Flash Thinking and Gemini 2.5 Flash Preview (thinking), both from Google AI, in 2 community votes, gemini 2.5 flash preview (thinking) wins 100% of head-to-head duels, context windows of 500K vs 1.0M, tested across 12 shared challenges. Updated February 2026.

In 2 community votes, Gemini 2.5 Flash Preview (thinking) wins 100% of head-to-head duels. Based on blind community voting from the RIVAL open dataset of 2+ human preference judgments for this pair.

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