Claude Sonnet 4 vs DeepSeek V4 Flash
Compare Claude Sonnet 4 by Anthropic against DeepSeek V4 Flash by DeepSeek, in 3 community votes, deepseek v4 flash wins 100% of head-to-head duels, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Image Generation: DeepSeek V4 Flash wins 100% of votes
Our Verdict
DeepSeek V4 FlashWinner
Claude Sonnet 4Runner-up
Pick DeepSeek V4 Flash. In 3 blind votes, DeepSeek V4 Flash wins 100% of the time. That's not luck.
DeepSeek V4 Flash particularly excels in Image Generation. DeepSeek V4 Flash is 54x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
DeepSeek V4 Flash
Input
$0.14
21× cheaper
Output
$0.28
54× cheaper
DeepSeek V4 Flash is cheaper on both — 21× input, 54× output
Writing DNA
Style Comparison
Similarity
29%
Claude Sonnet 4 uses 87.9x more emoji
Claude Sonnet 4
DeepSeek V4 Flash
62%Vocabulary54%
111wSentence Length17w
0.40Hedging0.52
5.0Bold3.6
9.3Lists2.6
0.88Emoji0.00
2.16Headings0.41
0.33Transitions0.19
Based on 17 + 27 text responses
Research
What we learned reading every model
FAQ
