GLM 5 Turbo vs GPT-5.2 Pro
Compare GLM 5 Turbo by Z-ai against GPT-5.2 Pro by OpenAI, context windows of 203K vs 400K, tested across 31 shared challenges. Updated April 2026.
Which is better, GLM 5 Turbo or GPT-5.2 Pro?
GLM 5 Turbo and GPT-5.2 Pro are both competitive models. GLM 5 Turbo costs $0.96/M input tokens vs $21/M for GPT-5.2 Pro. Context windows: 203K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between GLM 5 Turbo and GPT-5.2 Pro
GLM 5 Turbo is made by z-ai while GPT-5.2 Pro is from openai. GLM 5 Turbo has a 203K token context window compared to GPT-5.2 Pro's 400K. On pricing, GLM 5 Turbo costs $0.96/M input tokens vs $21/M for GPT-5.2 Pro.
No community votes yet. On paper, GPT-5.2 Pro has the edge — bigger model tier, bigger context window, major provider backing.
GLM 5 Turbo is 53x cheaper per token — worth considering if cost matters.
Style Comparison
GLM 5 Turbo uses 10.5x more transitions
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.
