GPT-5.1-Codex-Mini vs Qwen: Qwen3.5 27B
Compare GPT-5.1-Codex-Mini by OpenAI against Qwen: Qwen3.5 27B by Qwen, context windows of 400K vs 262K, tested across 53 shared challenges.
Our Verdict
GPT-5.1-Codex-Mini
Qwen: Qwen3.5 27BRunner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.1-Codex-Mini
Input
$1.50
Output
$6.00
Qwen: Qwen3.5 27B
Input
$0.30
5.0× cheaper
Output
$2.40
2.5× cheaper
Qwen: Qwen3.5 27B is cheaper on both — 5.0× input, 2.5× output
Writing DNA
Style Comparison
Similarity
30%
GPT-5.1-Codex-Mini
Qwen: Qwen3.5 27B
65%Vocabulary51%
20wSentence Length15w
0.56Hedging0.32
3.3Bold7.3
3.4Lists4.8
0.00Emoji0.01
0.08Headings0.87
0.05Transitions0.19
Based on 13 + 23 text responses
Research
What we learned reading every model
FAQ
