Gemini 3.1 Pro Preview vs Z.ai: GLM 5.1
Compare Gemini 3.1 Pro Preview by Google AI against Z.ai: GLM 5.1 by Z-ai, in 26 community votes, z.ai: glm 5.1 wins 86% of head-to-head duels, context windows of 1.0M vs 203K, tested across 52 shared challenges.
Web Design: Z.ai: GLM 5.1 wins 100% of votes
Image Generation: Gemini 3.1 Pro Preview and Z.ai: GLM 5.1 are tied
Reasoning: Z.ai: GLM 5.1 wins 100% of votes
Our Verdict
Z.ai: GLM 5.1Winner
Gemini 3.1 Pro PreviewRunner-up
Pick Z.ai: GLM 5.1. In 26 blind votes, Z.ai: GLM 5.1 wins 86% of the time. That's not luck.
Z.ai: GLM 5.1 particularly excels in Web Design, Reasoning.
Clear winner
API pricing
Cost per 1M tokens
Gemini 3.1 Pro Preview
Input
$2.00
Output
$12.00
Z.ai: GLM 5.1
Input
$1.40
1.4× cheaper
Output
$4.40
2.7× cheaper
Z.ai: GLM 5.1 is cheaper on both — 1.4× input, 2.7× output
Writing DNA
Style Comparison
Similarity
86%
Gemini 3.1 Pro Preview uses 1.6x more headings
Gemini 3.1 Pro Preview
Z.ai: GLM 5.1
54%Vocabulary54%
18wSentence Length18w
0.29Hedging0.31
4.9Bold3.6
3.3Lists2.6
0.00Emoji0.00
0.72Headings0.43
0.14Transitions0.11
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
