DeepSeek V4 Pro vs GPT-5 Pro
Compare DeepSeek V4 Pro by DeepSeek against GPT-5 Pro by OpenAI, context windows of 1.0M vs 400K, tested across 41 shared challenges.
Our Verdict
DeepSeek V4 Pro
GPT-5 ProRunner-up
No community votes yet. On paper, DeepSeek V4 Pro has the edge — newer, bigger context window.
DeepSeek V4 Pro is 34x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Pro
Input
$1.74
8.6× cheaper
Output
$3.48
34× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
DeepSeek V4 Pro is cheaper on both — 8.6× input, 34× output
Writing DNA
Style Comparison
Similarity
68%
DeepSeek V4 Pro uses 328.4x more bold
DeepSeek V4 Pro
GPT-5 Pro
57%Vocabulary65%
18wSentence Length15w
0.52Hedging0.32
3.3Bold0.0
2.3Lists2.9
0.04Emoji0.00
0.45Headings0.00
0.15Transitions0.01
Based on 27 + 11 text responses
Research
What we learned reading every model
FAQ
