GLM 5 Turbo vs o1
Compare GLM 5 Turbo by Z-ai against o1 by OpenAI, context windows of 203K vs 128K, tested across 53 shared challenges. Updated April 2026.
Which is better, GLM 5 Turbo or o1?
GLM 5 Turbo and o1 are both competitive models. GLM 5 Turbo costs $0.96/M input tokens vs $15/M for o1. Context windows: 203K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GLM 5 Turbo and o1
GLM 5 Turbo is made by z-ai while o1 is from openai. GLM 5 Turbo has a 203K token context window compared to o1's 128K. On pricing, GLM 5 Turbo costs $0.96/M input tokens vs $15/M for o1.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GLM 5 Turbo is 19x cheaper per token — worth considering if cost matters.
Style Comparison
o1 uses 3.2x more hedging
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.
