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.
Our Verdict
GPT-5.2 Pro
GLM 5 TurboRunner-up
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.
Too close to call
API pricing
Cost per 1M tokens
GLM 5 Turbo
Input
$0.96
22× cheaper
Output
$3.20
53× cheaper
GPT-5.2 Pro
Input
$21.00
Output
$168.00
GLM 5 Turbo is cheaper on both — 22× input, 53× output
Writing DNA
Style Comparison
Similarity
42%
GLM 5 Turbo uses 10.5x more transitions
GLM 5 Turbo
GPT-5.2 Pro
54%Vocabulary62%
18wSentence Length19w
0.24Hedging0.39
4.0Bold8.6
3.0Lists3.8
0.00Emoji0.00
0.72Headings1.17
0.17Transitions0.02
Based on 23 + 10 text responses
Research
What we learned reading every model
FAQ
