Z.AI: GLM 4.5
Nothing here. The model returned empty. We stared at it for a while.
Z.AI: GLM 4.5 vs OpenAI o4-mini
Compare Z.AI: GLM 4.5 by Zhipu AI against OpenAI o4-mini by OpenAI, tested across 34 shared challenges. Updated April 2026.
Which is better, Z.AI: GLM 4.5 or OpenAI o4-mini?
Z.AI: GLM 4.5 and OpenAI o4-mini are both competitive models. Z.AI: GLM 4.5 costs $0.6/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.
Key Differences Between Z.AI: GLM 4.5 and OpenAI o4-mini
Z.AI: GLM 4.5 is made by zhipu while OpenAI o4-mini is from openai. On pricing, Z.AI: GLM 4.5 costs $0.6/M input tokens vs $1.1/M for OpenAI o4-mini.
Our Verdict
Z.AI: GLM 4.5
OpenAI o4-miniRunner-up
No community votes yet. On paper, Z.AI: GLM 4.5 has the edge — bigger model tier, newer, bigger context window.
Too close to call
Writing DNA
Style Comparison
Similarity
99%
Z.AI: GLM 4.5 uses 545.8x more bold
Z.AI: GLM 4.5
OpenAI o4-mini
52%Vocabulary73%
14wSentence Length15w
0.49Hedging0.18
5.5Bold0.0
4.9Lists2.1
0.13Emoji0.00
0.68Headings0.00
0.20Transitions0.02
Based on 21 + 10 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
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