Z.ai: GLM 5 vs GPT-5 Pro
Compare Z.ai: GLM 5 by Zhipu AI against GPT-5 Pro by OpenAI, in 2 community votes, z.ai: glm 5 wins 100% of head-to-head duels, context windows of 203K vs 400K, tested across 41 shared challenges.
Our Verdict
Z.ai: GLM 5Winner
GPT-5 ProRunner-up
Pick Z.ai: GLM 5. In 2 blind votes, Z.ai: GLM 5 wins 100% of the time. That's not luck.
Z.ai: GLM 5 is 47x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Z.ai: GLM 5
Input
$0.80
19× cheaper
Output
$2.56
47× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Z.ai: GLM 5 is cheaper on both — 19× input, 47× output
Writing DNA
Style Comparison
Similarity
44%
Z.ai: GLM 5 uses 633.6x more bold
Z.ai: GLM 5
GPT-5 Pro
54%Vocabulary65%
17wSentence Length15w
0.37Hedging0.32
6.3Bold0.0
4.7Lists2.9
0.00Emoji0.00
0.60Headings0.00
0.18Transitions0.01
Based on 22 + 11 text responses
Research
What we learned reading every model
FAQ
