Z.AI: GLM 4.6 vs OpenAI: GPT-5.6 Terra
Compare Z.AI: GLM 4.6 by Zhipu AI against OpenAI: GPT-5.6 Terra by OpenAI, context windows of 203K vs 1.1M, tested across 54 shared challenges.
Our Verdict
Z.AI: GLM 4.6
OpenAI: GPT-5.6 Terra
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Z.AI: GLM 4.6 is 8.6x 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
6.3× cheaper
Output
$1.75
8.6× cheaper
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
Z.AI: GLM 4.6 is cheaper on both — 6.3× input, 8.6× output
Writing DNA
Style Comparison
Similarity
44%
Z.AI: GLM 4.6 uses 17.9x more emoji
Z.AI: GLM 4.6
OpenAI: GPT-5.6 Terra
52%Vocabulary57%
14wSentence Length18w
0.29Hedging0.85
5.2Bold2.8
3.2Lists4.6
0.18Emoji0.00
0.57Headings1.12
0.09Transitions0.06
Based on 22 + 27 text responses
Research
What we learned reading every model
FAQ
