DeepSeek V4 Flash vs OpenAI o4-mini
Compare DeepSeek V4 Flash by DeepSeek against OpenAI o4-mini by OpenAI, in 18 community votes, openai o4-mini wins 77% of head-to-head duels, tested across 53 shared challenges.
Reasoning: OpenAI o4-mini wins 100% of votes
Image Generation: DeepSeek V4 Flash wins 100% of votes
Web Design: OpenAI o4-mini wins 100% of votes
Analysis: OpenAI o4-mini wins 100% of votes
Our Verdict
OpenAI o4-miniWinner
DeepSeek V4 FlashRunner-up
Pick OpenAI o4-mini. In 18 blind votes, OpenAI o4-mini wins 77% of the time. That's not luck.
Pick DeepSeek V4 Flash for Image Generation. Pick OpenAI o4-mini for Reasoning, Web Design, Analysis. DeepSeek V4 Flash is 16x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
DeepSeek V4 Flash
Input
$0.14
7.9× cheaper
Output
$0.28
16× cheaper
OpenAI o4-mini
Input
$1.10
Output
$4.40
DeepSeek V4 Flash is cheaper on both — 7.9× input, 16× output
Writing DNA
Style Comparison
Similarity
61%
DeepSeek V4 Flash uses 363.7x more bold
DeepSeek V4 Flash
OpenAI o4-mini
54%Vocabulary73%
17wSentence Length15w
0.52Hedging0.18
3.6Bold0.0
2.6Lists2.1
0.00Emoji0.00
0.41Headings0.00
0.19Transitions0.02
Based on 27 + 10 text responses
Research
What we learned reading every model
FAQ
