Z.AI: GLM 4.5 Air vs Claude Opus 4

Compare Z.AI: GLM 4.5 Air by Zhipu AI against Claude Opus 4 by Anthropic, in 5 community votes, claude opus 4 wins 60% of head-to-head duels, context windows of 128K vs 200K, tested across 20 shared challenges. Updated February 2026.

In 5 community votes, Claude Opus 4 wins 60% of head-to-head duels. Claude Opus 4 leads in Image Generation. Based on blind community voting from the RIVAL open dataset of 5+ human preference judgments for this pair.

Image Generation: Claude Opus 4 wins 75% of votes
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