GLM 5 Turbo vs OpenAI o3
Compare GLM 5 Turbo by Z-ai against OpenAI o3 by OpenAI, tested across 53 shared challenges. Updated April 2026.
Which is better, GLM 5 Turbo or OpenAI o3?
GLM 5 Turbo and OpenAI o3 are both competitive models. GLM 5 Turbo costs $0.96/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between GLM 5 Turbo and OpenAI o3
GLM 5 Turbo is made by z-ai while OpenAI o3 is from openai. On pricing, GLM 5 Turbo costs $0.96/M input tokens vs $10/M for OpenAI o3.
API pricing
Per 1M tokens
GLM 5 Turbo
Input
$0.96
10× cheaper
Output
$3.20
13× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
GLM 5 Turbo is cheaper on both — 10× input, 13× output
Our Verdict
OpenAI o3
GLM 5 TurboRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, major provider backing.
GLM 5 Turbo is 13x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
55%
GLM 5 Turbo uses 5.7x more bold
GLM 5 Turbo
OpenAI o3
54%Vocabulary68%
18wSentence Length14w
0.24Hedging0.26
4.0Bold0.7
3.0Lists3.0
0.00Emoji0.00
0.72Headings0.38
0.17Transitions0.12
Based on 23 + 16 text responses
FAQ
