Z.AI: GLM 4.5 vs GPT-5.4 Pro
Compare Z.AI: GLM 4.5 by Zhipu AI against GPT-5.4 Pro by OpenAI, context windows of 128K vs 1.1M, tested across 18 shared challenges. Updated April 2026.
Which is better, Z.AI: GLM 4.5 or GPT-5.4 Pro?
Z.AI: GLM 4.5 and GPT-5.4 Pro are both competitive models. Z.AI: GLM 4.5 costs $0.6/M input tokens vs $30/M for GPT-5.4 Pro. Context windows: 128K vs 1050K tokens. Compare their real outputs side by side below.
Key Differences Between Z.AI: GLM 4.5 and GPT-5.4 Pro
Z.AI: GLM 4.5 is made by zhipu while GPT-5.4 Pro is from openai. Z.AI: GLM 4.5 has a 128K token context window compared to GPT-5.4 Pro's 1050K. On pricing, Z.AI: GLM 4.5 costs $0.6/M input tokens vs $30/M for GPT-5.4 Pro.
No community votes yet. On paper, GPT-5.4 Pro has the edge — bigger model tier, newer, bigger context window.
Z.AI: GLM 4.5 is 82x cheaper per token — worth considering if cost matters.
Style Comparison
Z.AI: GLM 4.5 uses 13.1x more emoji
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.
