DeepSeek R1 vs DeepSeek V4 Flash 0731
Compare DeepSeek R1 and DeepSeek V4 Flash 0731, both from DeepSeek, context windows of 128K vs 1.0M, tested across 41 shared challenges.
Our Verdict
DeepSeek V4 Flash 0731
DeepSeek R1Runner-up
No community votes yet. On paper, DeepSeek V4 Flash 0731 has the edge — newer, bigger context window.
DeepSeek V4 Flash 0731 is 7.8x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek R1
Input
$0.55
Output
$2.19
DeepSeek V4 Flash 0731
Input
$0.14
3.9× cheaper
Output
$0.28
7.8× cheaper
DeepSeek V4 Flash 0731 is cheaper on both — 3.9× input, 7.8× output
Writing DNA
Style Comparison
Similarity
29%
DeepSeek R1 uses 4.3x more emoji
DeepSeek R1
DeepSeek V4 Flash 0731
62%Vocabulary52%
15wSentence Length18w
0.52Hedging0.38
8.0Bold5.7
5.7Lists3.4
0.04Emoji0.00
0.62Headings0.83
0.28Transitions0.04
Based on 22 + 23 text responses
Research
What we learned reading every model
FAQ
