OpenAI o3 vs Qwen: Qwen3.5 Plus 2026-04-20
Compare OpenAI o3 by OpenAI against Qwen: Qwen3.5 Plus 2026-04-20 by Qwen, tested across 51 shared challenges.
Our Verdict
OpenAI o3
Qwen: Qwen3.5 Plus 2026-04-20
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Qwen: Qwen3.5 Plus 2026-04-20 is 17x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
OpenAI o3
Input
$10.00
Output
$40.00
Qwen: Qwen3.5 Plus 2026-04-20
Input
$0.40
25× cheaper
Output
$2.40
17× cheaper
Qwen: Qwen3.5 Plus 2026-04-20 is cheaper on both — 25× input, 17× output
Writing DNA
Style Comparison
Similarity
57%
Qwen: Qwen3.5 Plus 2026-04-20 uses 153.4x more emoji
OpenAI o3
Qwen: Qwen3.5 Plus 2026-04-20
68%Vocabulary59%
14wSentence Length15w
0.26Hedging0.28
0.7Bold4.4
3.0Lists2.5
0.00Emoji1.53
0.38Headings0.76
0.12Transitions0.04
Based on 16 + 27 text responses
Research
What we learned reading every model
FAQ
