Claude Haiku 4.5
Nothing here. The model returned empty. We stared at it for a while.
Claude Haiku 4.5 vs Z.ai: GLM 5.1
Compare Claude Haiku 4.5 by Anthropic against Z.ai: GLM 5.1 by Z-ai, context windows of 200K vs 203K, tested across 52 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or Z.ai: GLM 5.1?
Claude Haiku 4.5 and Z.ai: GLM 5.1 are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $1.4/M for Z.ai: GLM 5.1. Context windows: 200K vs 203K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and Z.ai: GLM 5.1
Claude Haiku 4.5 is made by anthropic while Z.ai: GLM 5.1 is from z-ai. Claude Haiku 4.5 has a 200K token context window compared to Z.ai: GLM 5.1's 203K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $1.4/M for Z.ai: GLM 5.1.
Our Verdict
Claude Haiku 4.5
Z.ai: GLM 5.1
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
98%
Claude Haiku 4.5 uses 20.4x more emoji
Claude Haiku 4.5
Z.ai: GLM 5.1
61%Vocabulary54%
47wSentence Length18w
0.64Hedging0.31
5.1Bold3.6
6.3Lists2.6
0.20Emoji0.00
2.46Headings0.43
0.17Transitions0.11
Based on 24 + 27 text responses
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