Z.AI: GLM 4.5 Air vs GPT-5
Compare Z.AI: GLM 4.5 Air by Zhipu AI against GPT-5 by OpenAI, in 22 community votes, z.ai: glm 4.5 air wins 69% of head-to-head duels, context windows of 128K vs 400K, tested across 51 shared challenges.
Web Design: Z.AI: GLM 4.5 Air wins 60% of votes
Image Generation: Z.AI: GLM 4.5 Air wins 80% of votes
Reasoning: Z.AI: GLM 4.5 Air wins 67% of votes
Conversation: Z.AI: GLM 4.5 Air and GPT-5 are tied
Our Verdict
Z.AI: GLM 4.5 AirWinner
GPT-5Runner-up
Pick Z.AI: GLM 4.5 Air. In 22 blind votes, Z.AI: GLM 4.5 Air wins 69% of the time. That's not luck.
Z.AI: GLM 4.5 Air particularly excels in Image Generation, Reasoning, Web Design. Z.AI: GLM 4.5 Air is 9.1x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Z.AI: GLM 4.5 Air
Input
$0.20
6.3× cheaper
Output
$1.10
9.1× cheaper
GPT-5
Input
$1.25
Output
$10.00
Z.AI: GLM 4.5 Air is cheaper on both — 6.3× input, 9.1× output
Writing DNA
Style Comparison
Similarity
42%
Z.AI: GLM 4.5 Air uses 9.9x more emoji
Z.AI: GLM 4.5 Air
GPT-5
48%Vocabulary65%
16wSentence Length13w
0.40Hedging0.20
5.4Bold0.2
4.8Lists4.6
0.10Emoji0.00
0.75Headings0.16
0.12Transitions0.03
Based on 15 + 16 text responses
Research
What we learned reading every model
FAQ
