Claude Opus 4.1 vs DeepSeek V3 (March 2024)
Compare Claude Opus 4.1 by Anthropic against DeepSeek V3 (March 2024) by DeepSeek, context windows of 200K vs 128K, tested across 53 shared challenges.
Our Verdict
Claude Opus 4.1
DeepSeek V3 (March 2024)Runner-up
No community votes yet. On paper, Claude Opus 4.1 has the edge — newer, bigger context window.
DeepSeek V3 (March 2024) is 268x 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 V3 (March 2024)
Input
$0.14
107× cheaper
Output
$0.28
268× cheaper
DeepSeek V3 (March 2024) is cheaper on both — 107× input, 268× output
Writing DNA
Style Comparison
Similarity
58%
Claude Opus 4.1 uses 4.8x more sentence length
Claude Opus 4.1
DeepSeek V3 (March 2024)
61%Vocabulary58%
87wSentence Length18w
0.54Hedging0.73
5.1Bold7.5
6.7Lists7.6
0.38Emoji0.26
1.68Headings1.60
0.13Transitions0.08
Based on 17 + 16 text responses
Research
What we learned reading every model
FAQ
