Claude 3.7 Thinking Sonnet vs Gemini 2.5 Flash Preview (thinking)

Compare Claude 3.7 Thinking Sonnet by Anthropic against Gemini 2.5 Flash Preview (thinking) by Google AI, in 5 community votes, claude 3.7 thinking sonnet wins 80% of head-to-head duels, context windows of 200K vs 1.0M, tested across 19 shared challenges. Updated February 2026.

In 5 community votes, Claude 3.7 Thinking Sonnet wins 80% of head-to-head duels. Claude 3.7 Thinking Sonnet leads in Reasoning. Based on blind community voting from the RIVAL open dataset of 5+ human preference judgments for this pair.

Reasoning: Claude 3.7 Thinking Sonnet wins 100% of votes
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