Z.ai: GLM 5.1 vs Inception: Mercury
Compare Z.ai: GLM 5.1 by Z-ai against Inception: Mercury by Inception, context windows of 203K vs 32K, tested across 53 shared challenges.
Our Verdict
Z.ai: GLM 5.1
Inception: MercuryRunner-up
No community votes yet. On paper, Z.ai: GLM 5.1 has the edge — bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
Z.ai: GLM 5.1
Input
$1.40
7.1× cheaper
Output
$4.40
2.3× cheaper
Inception: Mercury
Input
$10.00
Output
$10.00
Z.ai: GLM 5.1 is cheaper on both — 7.1× input, 2.3× output
Writing DNA
Style Comparison
Similarity
33%
Inception: Mercury uses 4.3x more emoji
Z.ai: GLM 5.1
Inception: Mercury
54%Vocabulary55%
18wSentence Length40w
0.31Hedging0.39
3.6Bold4.9
2.6Lists3.8
0.00Emoji0.04
0.43Headings1.04
0.11Transitions0.03
Based on 27 + 17 text responses
Research
What we learned reading every model
FAQ
