Claude Opus 5 vs DeepSeek V4 Pro
Compare Claude Opus 5 by Anthropic against DeepSeek V4 Pro by DeepSeek, context windows of 1.0M vs 1.0M, tested across 54 shared challenges.
Our Verdict
Claude Opus 5
DeepSeek V4 Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
DeepSeek V4 Pro is 7.2x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 5
Input
$5.00
Output
$25.00
DeepSeek V4 Pro
Input
$1.74
2.9× cheaper
Output
$3.48
7.2× cheaper
DeepSeek V4 Pro is cheaper on both — 2.9× input, 7.2× output
Writing DNA
Style Comparison
Similarity
78%
DeepSeek V4 Pro uses 3.0x more transitions
Claude Opus 5
DeepSeek V4 Pro
54%Vocabulary57%
21wSentence Length18w
0.40Hedging0.52
3.9Bold3.3
1.9Lists2.3
0.02Emoji0.04
0.71Headings0.45
0.05Transitions0.15
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
