Z.ai: GLM 5.2 vs Sonar Pro Search
Compare Z.ai: GLM 5.2 by Zhipu AI against Sonar Pro Search by Perplexity, context windows of 1.0M vs 200K, tested across 52 shared challenges.
Our Verdict
Z.ai: GLM 5.2
Sonar Pro SearchRunner-up
No community votes yet. On paper, Z.ai: GLM 5.2 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Z.ai: GLM 5.2 is 3.4x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Z.ai: GLM 5.2
Input
$1.40
2.1× cheaper
Output
$4.40
3.4× cheaper
Sonar Pro Search
Input
$3.00
Output
$15.00
Z.ai: GLM 5.2 is cheaper on both — 2.1× input, 3.4× output
Writing DNA
Style Comparison
Similarity
40%
Sonar Pro Search uses 3.7x more headings
Z.ai: GLM 5.2
Sonar Pro Search
56%Vocabulary60%
18wSentence Length22w
0.27Hedging0.30
3.7Bold2.7
2.8Lists2.6
0.00Emoji0.00
0.56Headings2.08
0.24Transitions0.07
Based on 27 + 25 text responses
Research
What we learned reading every model
FAQ
