DeepSeek V4 Flash vs OpenAI: GPT-5.6 Luna
Compare DeepSeek V4 Flash by DeepSeek against OpenAI: GPT-5.6 Luna by OpenAI, in 5 community votes, openai: gpt-5.6 luna wins 60% of head-to-head duels, context windows of 1.0M vs 1.1M, tested across 54 shared challenges.
Web Design: OpenAI: GPT-5.6 Luna wins 67% of votes
Our Verdict
OpenAI: GPT-5.6 LunaWinner
DeepSeek V4 FlashRunner-up
Pick OpenAI: GPT-5.6 Luna. In 5 blind votes, OpenAI: GPT-5.6 Luna wins 60% of the time. That's not luck.
OpenAI: GPT-5.6 Luna particularly excels in Web Design. DeepSeek V4 Flash is 21x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
DeepSeek V4 Flash
Input
$0.14
7.1× cheaper
Output
$0.28
21× cheaper
OpenAI: GPT-5.6 Luna
Input
$1.00
Output
$6.00
DeepSeek V4 Flash is cheaper on both — 7.1× input, 21× output
Writing DNA
Style Comparison
Similarity
55%
OpenAI: GPT-5.6 Luna uses 2.9x more headings
DeepSeek V4 Flash
OpenAI: GPT-5.6 Luna
54%Vocabulary59%
17wSentence Length19w
0.52Hedging0.84
3.6Bold2.7
2.6Lists4.5
0.00Emoji0.00
0.41Headings1.20
0.19Transitions0.10
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
