DeepSeek V4 Pro vs Gemini 2.5 Flash Preview 05-20 (thinking)
Compare DeepSeek V4 Pro by DeepSeek against Gemini 2.5 Flash Preview 05-20 (thinking) by Google AI, context windows of 1.0M vs 1.0M, tested across 11 shared challenges.
Our Verdict
DeepSeek V4 Pro
Gemini 2.5 Flash Preview 05-20 (thinking)Runner-up
No community votes yet. On paper, DeepSeek V4 Pro has the edge — bigger model tier, newer.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
12× cheaper
Output
$3.50
Gemini 2.5 Flash Preview 05-20 (thinking) wins input (12× cheaper)·DeepSeek V4 Pro
Writing DNA
Style Comparison
Similarity
44%
DeepSeek V4 Pro uses 51.8x more hedging
DeepSeek V4 Pro
Gemini 2.5 Flash Preview 05-20 (thinking)
57%Vocabulary70%
18wSentence Length11w
0.52Hedging0.00
3.3Bold4.2
2.3Lists7.3
0.04Emoji0.00
0.45Headings0.00
0.15Transitions0.00
Based on 27 + 3 text responses
Research
What we learned reading every model
FAQ
