Claude Sonnet 4 vs Z.AI: GLM 4.6
Compare Claude Sonnet 4 by Anthropic against Z.AI: GLM 4.6 by Zhipu AI, in 2 community votes, z.ai: glm 4.6 wins 100% of head-to-head duels, context windows of 200K vs 203K, tested across 54 shared challenges.
Our Verdict
Z.AI: GLM 4.6Winner
Claude Sonnet 4Runner-up
Pick Z.AI: GLM 4.6. In 2 blind votes, Z.AI: GLM 4.6 wins 100% of the time. That's not luck.
Z.AI: GLM 4.6 is 8.6x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
Z.AI: GLM 4.6
Input
$0.40
7.5× cheaper
Output
$1.75
8.6× cheaper
Z.AI: GLM 4.6 is cheaper on both — 7.5× input, 8.6× output
Writing DNA
Style Comparison
Similarity
47%
Claude Sonnet 4 uses 7.9x more sentence length
Claude Sonnet 4
Z.AI: GLM 4.6
62%Vocabulary52%
111wSentence Length14w
0.40Hedging0.29
5.0Bold5.2
9.3Lists3.2
0.88Emoji0.18
2.16Headings0.57
0.33Transitions0.09
Based on 17 + 22 text responses
Research
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