DeepSeek V4 Flash vs xAI: Grok 4.3
Compare DeepSeek V4 Flash by DeepSeek against xAI: Grok 4.3 by xAI, context windows of 1.0M vs 1.0M, tested across 54 shared challenges.
Our Verdict
DeepSeek V4 Flash
xAI: Grok 4.3
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 8.9x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Flash
Input
$0.14
8.9× cheaper
Output
$0.28
8.9× cheaper
xAI: Grok 4.3
Input
$1.25
Output
$2.50
DeepSeek V4 Flash is cheaper on both — 8.9× input, 8.9× output
Writing DNA
Style Comparison
Similarity
74%
DeepSeek V4 Flash uses 1.6x more bold
DeepSeek V4 Flash
xAI: Grok 4.3
54%Vocabulary62%
17wSentence Length16w
0.52Hedging0.46
3.6Bold2.3
2.6Lists2.5
0.00Emoji0.00
0.41Headings0.34
0.19Transitions0.14
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
