GLM 4.6 vs GPT-5.6 Luna Pro
Compare GLM 4.6 by Zhipu AI against GPT-5.6 Luna Pro by OpenAI, context windows of 203K vs 1.1M, tested across 54 shared challenges.
Our Verdict
GLM 4.6
GPT-5.6 Luna Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GLM 4.6 is 3.4x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GLM 4.6
Input
$0.40
2.5× cheaper
Output
$1.75
3.4× cheaper
GPT-5.6 Luna Pro
Input
$1.00
Output
$6.00
GLM 4.6 is cheaper on both — 2.5× input, 3.4× output
Writing DNA
Style Comparison
Similarity
43%
GPT-5.6 Luna Pro uses 3.0x more emoji
GLM 4.6
GPT-5.6 Luna Pro
52%Vocabulary58%
14wSentence Length18w
0.29Hedging0.81
5.2Bold2.9
3.2Lists5.1
0.18Emoji0.54
0.57Headings1.10
0.09Transitions0.09
Based on 22 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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