Claude Opus 4.6 vs Claude Haiku 4.5

Compare Claude Opus 4.6 and Claude Haiku 4.5, both from Anthropic, in 2 community votes, claude opus 4.6 wins 100% of head-to-head duels, context windows of 1.0M vs 200K, tested across 52 shared challenges. Updated February 2026.

In 2 community votes, Claude Opus 4.6 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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