Z.AI: GLM 4.5 vs Claude Sonnet 4

Compare Z.AI: GLM 4.5 by Zhipu AI against Claude Sonnet 4 by Anthropic, in 29 community votes, z.ai: glm 4.5 wins 68% of head-to-head duels, context windows of 128K vs 200K, tested across 30 shared challenges. Updated March 2026.

Which is better, Z.AI: GLM 4.5 or Claude Sonnet 4?

Z.AI: GLM 4.5 is the better choice overall, winning 68% of 29 blind community votes on Rival. Z.AI: GLM 4.5 costs $0.6/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Z.AI: GLM 4.5 and Claude Sonnet 4

Z.AI: GLM 4.5 is made by zhipu while Claude Sonnet 4 is from anthropic. Z.AI: GLM 4.5 has a 128K token context window compared to Claude Sonnet 4's 200K. On pricing, Z.AI: GLM 4.5 costs $0.6/M input tokens vs $3/M for Claude Sonnet 4. In community voting, In 29 community votes, Z.AI: GLM 4.5 wins 68% of head-to-head duels.

In 29 community votes, Z.AI: GLM 4.5 wins 68% of head-to-head duels. Z.AI: GLM 4.5 leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 29+ human preference judgments for this pair.

Web Design: Z.AI: GLM 4.5 wins 71% of votes
Image Generation: Z.AI: GLM 4.5 wins 67% of votes
Our Verdict
Z.AI: GLM 4.5
Z.AI: GLM 4.5Winner
Claude Sonnet 4
Claude Sonnet 4Runner-up

Pick Z.AI: GLM 4.5. In 29 blind votes, Z.AI: GLM 4.5 wins 68% of the time. That's not luck.

Z.AI: GLM 4.5 particularly excels in Web Design, Image Generation. Z.AI: GLM 4.5 is 6.8x cheaper per token — worth considering if cost matters.

Clear winner
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Z.AI: GLM 4.5Claude Sonnet 4
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