Z.AI: GLM 4.5 Air vs GPT-5 Codex
Compare Z.AI: GLM 4.5 Air by Zhipu AI against GPT-5 Codex by OpenAI, tested across 49 shared challenges. Updated April 2026.
Which is better, Z.AI: GLM 4.5 Air or GPT-5 Codex?
Z.AI: GLM 4.5 Air and GPT-5 Codex are both competitive models. Compare their real outputs side by side below.
Key Differences Between Z.AI: GLM 4.5 Air and GPT-5 Codex
Z.AI: GLM 4.5 Air is made by zhipu while GPT-5 Codex is from openai.
No community votes yet. On paper, GPT-5 Codex has the edge — bigger model tier, newer.
Style Comparison
Z.AI: GLM 4.5 Air uses 2.4x more bold
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
