Claude Sonnet 4.5 vs Z.AI: GLM 4.6
Compare Claude Sonnet 4.5 by Anthropic against Z.AI: GLM 4.6 by Zhipu AI, in 96 community votes, claude sonnet 4.5 wins 60% of head-to-head duels, context windows of 200K vs 203K, tested across 43 shared challenges.
Web Design: Claude Sonnet 4.5 wins 68% of votes
Reasoning: Claude Sonnet 4.5 wins 59% of votes
Image Generation: Z.AI: GLM 4.6 wins 57% of votes
Conversation: Claude Sonnet 4.5 and Z.AI: GLM 4.6 are tied
Analysis: Claude Sonnet 4.5 wins 100% of votes
Our Verdict
Claude Sonnet 4.5Winner
Z.AI: GLM 4.6Runner-up
Pick Claude Sonnet 4.5. In 96 blind votes, Claude Sonnet 4.5 wins 60% of the time. That's not luck.
Pick Claude Sonnet 4.5 for Analysis, Web Design, Reasoning. Pick Z.AI: GLM 4.6 for Image Generation. 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 4.5
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 4.5 uses 6.7x more sentence length
Claude Sonnet 4.5
Z.AI: GLM 4.6
64%Vocabulary52%
94wSentence Length14w
0.48Hedging0.29
4.9Bold5.2
8.0Lists3.2
0.45Emoji0.18
1.91Headings0.57
0.07Transitions0.09
Based on 20 + 22 text responses
Research
What we learned reading every model
FAQ
