OpenAI o4-mini vs Qwen: Qwen3.5 Plus 2026-02-15
Compare OpenAI o4-mini by OpenAI against Qwen: Qwen3.5 Plus 2026-02-15 by Qwen, tested across 53 shared challenges.
Our Verdict
Qwen: Qwen3.5 Plus 2026-02-15
OpenAI o4-miniRunner-up
No community votes yet. On paper, Qwen: Qwen3.5 Plus 2026-02-15 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 2026-02-15
Input
$0.40
2.8× cheaper
Output
$2.40
1.8× cheaper
Qwen: Qwen3.5 Plus 2026-02-15 is cheaper on both — 2.8× input, 1.8× output
Writing DNA
Style Comparison
Similarity
47%
Qwen: Qwen3.5 Plus 2026-02-15 uses 533.6x more bold
OpenAI o4-mini
Qwen: Qwen3.5 Plus 2026-02-15
73%Vocabulary54%
15wSentence Length18w
0.18Hedging0.51
0.0Bold5.3
2.1Lists2.9
0.00Emoji0.10
0.00Headings0.75
0.02Transitions0.09
Based on 10 + 23 text responses
Research
What we learned reading every model
FAQ
