Claude 3.7 Sonnet vs INTELLECT-3
Compare Claude 3.7 Sonnet by Anthropic against INTELLECT-3 by OpenRouter, tested across 55 shared challenges. Updated May 2026.
Which is better, Claude 3.7 Sonnet or INTELLECT-3?
Claude 3.7 Sonnet and INTELLECT-3 are both competitive models. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and INTELLECT-3
Claude 3.7 Sonnet is made by anthropic while INTELLECT-3 is from openrouter.
API pricing
Per 1M tokens
Claude 3.7 Sonnet
Input
$3.00
Output
$15.00
INTELLECT-3
Input
—
Output
—
Our Verdict
Claude 3.7 Sonnet
INTELLECT-3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
58%
INTELLECT-3 uses 1.7x more emoji
Claude 3.7 Sonnet
INTELLECT-3
62%Vocabulary55%
35wSentence Length21w
0.99Hedging0.60
1.2Bold4.9
4.3Lists4.7
0.00Emoji0.02
1.78Headings1.16
0.23Transitions0.25
Based on 13 + 24 text responses
FAQ
