Claude Opus 4.1 vs DeepSeek V4 Pro
Compare Claude Opus 4.1 by Anthropic against DeepSeek V4 Pro by DeepSeek, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Our Verdict
DeepSeek V4 Pro
Claude Opus 4.1Runner-up
No community votes yet. On paper, DeepSeek V4 Pro has the edge — newer, bigger context window.
DeepSeek V4 Pro is 22x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
DeepSeek V4 Pro
Input
$1.74
8.6× cheaper
Output
$3.48
22× cheaper
DeepSeek V4 Pro is cheaper on both — 8.6× input, 22× output
Writing DNA
Style Comparison
Similarity
27%
Claude Opus 4.1 uses 11.0x more emoji
Claude Opus 4.1
DeepSeek V4 Pro
61%Vocabulary57%
87wSentence Length18w
0.54Hedging0.52
5.1Bold3.3
6.7Lists2.3
0.38Emoji0.04
1.68Headings0.45
0.13Transitions0.15
Based on 17 + 27 text responses
Research
What we learned reading every model
FAQ
