OpenAI o4-mini vs Qwen: Qwen3.5 Plus 2026-04-20
Compare OpenAI o4-mini by OpenAI against Qwen: Qwen3.5 Plus 2026-04-20 by Qwen, tested across 51 shared challenges.
Our Verdict
Qwen: Qwen3.5 Plus 2026-04-20
OpenAI o4-miniRunner-up
No community votes yet. On paper, Qwen: Qwen3.5 Plus 2026-04-20 has the edge — bigger model tier, newer, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
OpenAI o4-mini
Input
$1.10
Output
$4.40
Qwen: Qwen3.5 Plus 2026-04-20
Input
$0.40
2.8× cheaper
Output
$2.40
1.8× cheaper
Qwen: Qwen3.5 Plus 2026-04-20 is cheaper on both — 2.8× input, 1.8× output
Writing DNA
Style Comparison
Similarity
53%
Qwen: Qwen3.5 Plus 2026-04-20 uses 440.8x more bold
OpenAI o4-mini
Qwen: Qwen3.5 Plus 2026-04-20
73%Vocabulary59%
15wSentence Length15w
0.18Hedging0.28
0.0Bold4.4
2.1Lists2.5
0.00Emoji1.53
0.00Headings0.76
0.02Transitions0.04
Based on 10 + 27 text responses
Research
What we learned reading every model
FAQ
