Z.AI: GLM 4.6 vs GPT-4.5
Compare Z.AI: GLM 4.6 by Zhipu AI against GPT-4.5 by OpenAI, context windows of 203K vs 128K, tested across 25 shared challenges.
Our Verdict
Z.AI: GLM 4.6
GPT-4.5Runner-up
No community votes yet. On paper, Z.AI: GLM 4.6 has the edge — newer, bigger context window.
Z.AI: GLM 4.6 is 86x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Z.AI: GLM 4.6
Input
$0.40
188× cheaper
Output
$1.75
86× cheaper
GPT-4.5
Input
$75.00
Output
$150.00
Z.AI: GLM 4.6 is cheaper on both — 188× input, 86× output
Writing DNA
Style Comparison
Similarity
32%
Z.AI: GLM 4.6 uses 17.9x more emoji
Z.AI: GLM 4.6
GPT-4.5
52%Vocabulary63%
14wSentence Length16w
0.29Hedging0.57
5.2Bold4.7
3.2Lists6.4
0.18Emoji0.00
0.57Headings1.30
0.09Transitions0.54
Based on 22 + 11 text responses
Research
What we learned reading every model
FAQ
Common questions
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