DeepSeek V4 Pro vs GPT-5
Compare DeepSeek V4 Pro by DeepSeek against GPT-5 by OpenAI, context windows of 1.0M vs 400K, tested across 51 shared challenges.
Our Verdict
DeepSeek V4 Pro
GPT-5Runner-up
No community votes yet. On paper, DeepSeek V4 Pro has the edge — newer, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
2.9× cheaper
GPT-5
Input
$1.25
1.4× cheaper
Output
$10.00
GPT-5 wins input (1.4× cheaper)·DeepSeek V4 Pro wins output (2.9× cheaper)
Writing DNA
Style Comparison
Similarity
56%
DeepSeek V4 Pro uses 3.5x more emoji
DeepSeek V4 Pro
GPT-5
57%Vocabulary65%
18wSentence Length13w
0.52Hedging0.20
3.3Bold0.2
2.3Lists4.6
0.04Emoji0.00
0.45Headings0.16
0.15Transitions0.03
Based on 27 + 16 text responses
Research
What we learned reading every model
FAQ
