DeepSeek V4 Flash vs Llama 3.1 405B
Compare DeepSeek V4 Flash by DeepSeek against Llama 3.1 405B by Meta AI, context windows of 1.0M vs 128K, tested across 12 shared challenges.
Our Verdict
DeepSeek V4 Flash
Llama 3.1 405B
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 is 11x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Flash
Input
$0.14
19× cheaper
Output
$0.28
11× cheaper
Llama 3.1 405B
Input
$2.70
Output
$3.10
DeepSeek V4 Flash is cheaper on both — 19× input, 11× output
Writing DNA
Style Comparison
Similarity
60%
DeepSeek V4 Flash uses 363.7x more bold
DeepSeek V4 Flash
Llama 3.1 405B
54%Vocabulary56%
17wSentence Length15w
0.52Hedging0.41
3.6Bold0.0
2.6Lists1.9
0.00Emoji0.03
0.41Headings0.00
0.19Transitions0.16
Based on 27 + 5 text responses
Research
What we learned reading every model
FAQ
