GLM 5 Turbo vs GPT-5.1
Compare GLM 5 Turbo by Z-ai against GPT-5.1 by OpenAI, in 15 community votes, glm 5 turbo wins 82% of head-to-head duels, context windows of 203K vs 400K, tested across 51 shared challenges.
Image Generation: GLM 5 Turbo wins 100% of votes
Reasoning: GLM 5 Turbo wins 100% of votes
Conversation: GLM 5 Turbo and GPT-5.1 are tied
Web Design: GLM 5 Turbo and GPT-5.1 are tied
Our Verdict
GLM 5 TurboWinner
GPT-5.1Runner-up
Pick GLM 5 Turbo. In 15 blind votes, GLM 5 Turbo wins 82% of the time. That's not luck.
GLM 5 Turbo particularly excels in Image Generation, Reasoning. GLM 5 Turbo is 3.1x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
GLM 5 Turbo
Input
$0.96
1.3× cheaper
Output
$3.20
3.1× cheaper
GPT-5.1
Input
$1.25
Output
$10.00
GLM 5 Turbo is cheaper on both — 1.3× input, 3.1× output
Writing DNA
Style Comparison
Similarity
45%
GLM 5 Turbo uses 6.1x more transitions
GLM 5 Turbo
GPT-5.1
54%Vocabulary62%
18wSentence Length19w
0.24Hedging0.29
4.0Bold3.5
3.0Lists7.2
0.00Emoji0.00
0.72Headings0.61
0.17Transitions0.03
Based on 23 + 14 text responses
Research
What we learned reading every model
FAQ
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