Z.AI: GLM 4.5 Air
Nothing here. The model returned empty. We stared at it for a while.
Z.AI: GLM 4.5 Air vs OpenAI o3
Compare Z.AI: GLM 4.5 Air by Zhipu AI against OpenAI o3 by OpenAI, tested across 26 shared challenges. Updated April 2026.
Which is better, Z.AI: GLM 4.5 Air or OpenAI o3?
Z.AI: GLM 4.5 Air and OpenAI o3 are both competitive models. Z.AI: GLM 4.5 Air costs $0.2/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Z.AI: GLM 4.5 Air and OpenAI o3
Z.AI: GLM 4.5 Air is made by zhipu while OpenAI o3 is from openai. On pricing, Z.AI: GLM 4.5 Air costs $0.2/M input tokens vs $10/M for OpenAI o3.
Our Verdict
Z.AI: GLM 4.5 Air
OpenAI o3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Z.AI: GLM 4.5 Air is 36x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
99%
Z.AI: GLM 4.5 Air uses 9.9x more emoji
Z.AI: GLM 4.5 Air
OpenAI o3
48%Vocabulary68%
16wSentence Length14w
0.40Hedging0.26
5.4Bold0.7
4.8Lists3.0
0.10Emoji0.00
0.75Headings0.38
0.12Transitions0.12
Based on 15 + 16 text responses
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
Model Similarity Index
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ