Claude Sonnet 3.6 (2022-10-22) vs o1

Compare Claude Sonnet 3.6 (2022-10-22) by Anthropic against o1 by OpenAI, in 4 community votes, o1 wins 75% of head-to-head duels, context windows of 200K vs 128K, tested across 40 shared challenges. Updated February 2026.

In 4 community votes, o1 wins 75% of head-to-head duels. o1 leads in Conversation. Based on blind community voting from the RIVAL open dataset of 4+ human preference judgments for this pair.

Conversation: o1 wins 100% of votes
Reasoning: Claude Sonnet 3.6 (2022-10-22) and o1 are tied
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