Claude Opus 4.1 vs INTELLECT-3
Compare Claude Opus 4.1 by Anthropic against INTELLECT-3 by OpenRouter, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or INTELLECT-3?
Claude Opus 4.1 and INTELLECT-3 are both competitive models. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and INTELLECT-3
Claude Opus 4.1 is made by anthropic while INTELLECT-3 is from openrouter.
API pricing
Per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
INTELLECT-3
Input
—
Output
—
Our Verdict
Claude Opus 4.1
INTELLECT-3Runner-up
No community votes yet. On paper, Claude Opus 4.1 has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
Writing DNA
Style Comparison
Similarity
62%
Claude Opus 4.1 uses 22.3x more emoji
Claude Opus 4.1
INTELLECT-3
61%Vocabulary55%
87wSentence Length21w
0.54Hedging0.60
5.1Bold4.9
6.7Lists4.7
0.38Emoji0.02
1.68Headings1.16
0.13Transitions0.25
Based on 17 + 24 text responses
FAQ
