DeepSeek V4 Flash 0731 vs Qwen3.5 397B A17B
Compare DeepSeek V4 Flash 0731 by DeepSeek against Qwen3.5 397B A17B by Qwen, context windows of 1.0M vs 262K, tested across 42 shared challenges.
Our Verdict
DeepSeek V4 Flash 0731
Qwen3.5 397B A17B
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
DeepSeek V4 Flash 0731 is 13x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Flash 0731
Input
$0.14
4.3× cheaper
Output
$0.28
13× cheaper
Qwen3.5 397B A17B
Input
$0.60
Output
$3.60
DeepSeek V4 Flash 0731 is cheaper on both — 4.3× input, 13× output
Writing DNA
Style Comparison
Similarity
67%
Qwen3.5 397B A17B uses 22.8x more emoji
DeepSeek V4 Flash 0731
Qwen3.5 397B A17B
52%Vocabulary54%
18wSentence Length14w
0.38Hedging0.39
5.7Bold6.9
3.4Lists4.2
0.00Emoji0.23
0.83Headings0.93
0.04Transitions0.17
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
