DeepSeek V4 Flash vs Google: Gemini 2.5 Flash Preview 09-2025
Compare DeepSeek V4 Flash by DeepSeek against Google: Gemini 2.5 Flash Preview 09-2025 by Google AI, context windows of 1.0M vs 1.0M, tested across 50 shared challenges.
Our Verdict
DeepSeek V4 Flash
Google: Gemini 2.5 Flash Preview 09-2025
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
2.1× cheaper
Output
$0.28
8.9× cheaper
Google: Gemini 2.5 Flash Preview 09-2025
Input
$0.30
Output
$2.50
DeepSeek V4 Flash is cheaper on both — 2.1× input, 8.9× output
Writing DNA
Style Comparison
Similarity
56%
Google: Gemini 2.5 Flash Preview 09-2025 uses 13.5x more emoji
DeepSeek V4 Flash
Google: Gemini 2.5 Flash Preview 09-2025
54%Vocabulary53%
17wSentence Length19w
0.52Hedging0.30
3.6Bold5.8
2.6Lists3.1
0.00Emoji0.14
0.41Headings0.93
0.19Transitions0.22
Based on 27 + 22 text responses
Research
What we learned reading every model
FAQ
