INTELLECT-3 vs OpenAI o3
Compare INTELLECT-3 by OpenRouter against OpenAI o3 by OpenAI, tested across 54 shared challenges. Updated May 2026.
Which is better, INTELLECT-3 or OpenAI o3?
INTELLECT-3 and OpenAI o3 are both competitive models. Compare their real outputs side by side below.
Key Differences Between INTELLECT-3 and OpenAI o3
INTELLECT-3 is made by openrouter while OpenAI o3 is from openai.
API pricing
Per 1M tokens
INTELLECT-3
Input
—
Output
—
OpenAI o3
Input
$10.00
Output
$40.00
Our Verdict
OpenAI o3
INTELLECT-3Runner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, major provider backing.
Too close to call
Writing DNA
Style Comparison
Similarity
32%
INTELLECT-3 uses 1.7x more emoji
INTELLECT-3
OpenAI o3
55%Vocabulary68%
21wSentence Length14w
0.60Hedging0.26
4.9Bold0.7
4.7Lists3.0
0.02Emoji0.00
1.16Headings0.38
0.25Transitions0.12
Based on 24 + 16 text responses
FAQ
