GPT-5.4 Pro vs Qwen3.5 9B
Compare GPT-5.4 Pro by OpenAI against Qwen3.5 9B by Qwen, context windows of 1.1M vs 262K, tested across 17 shared challenges.
Our Verdict
GPT-5.4 Pro
Qwen3.5 9BRunner-up
No community votes yet. On paper, GPT-5.4 Pro has the edge — bigger model tier, bigger context window, major provider backing.
Qwen3.5 9B is 1200x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-5.4 Pro
Input
$30.00
Output
$180.00
Qwen3.5 9B
Input
$0.10
300× cheaper
Output
$0.15
1200× cheaper
Qwen3.5 9B is cheaper on both — 300× input, 1200× output
Writing DNA
Style Comparison
Similarity
59%
Qwen3.5 9B uses 11.5x more transitions
GPT-5.4 Pro
Qwen3.5 9B
50%Vocabulary47%
35wSentence Length15w
0.70Hedging0.41
7.5Bold6.9
8.3Lists4.8
0.00Emoji0.00
2.52Headings0.91
0.01Transitions0.12
Based on 12 + 21 text responses
Research
What we learned reading every model
FAQ
