GPT-5 vs INTELLECT-3
Compare GPT-5 by OpenAI against INTELLECT-3 by OpenRouter, tested across 52 shared challenges. Updated May 2026.
Which is better, GPT-5 or INTELLECT-3?
GPT-5 and INTELLECT-3 are both competitive models. Compare their real outputs side by side below.
Key Differences Between GPT-5 and INTELLECT-3
GPT-5 is made by openai while INTELLECT-3 is from openrouter.
API pricing
Per 1M tokens
GPT-5
Input
$1.25
Output
$10.00
INTELLECT-3
Input
—
Output
—
Our Verdict
GPT-5
INTELLECT-3Runner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
Writing DNA
Style Comparison
Similarity
29%
INTELLECT-3 uses 1.7x more emoji
GPT-5
INTELLECT-3
65%Vocabulary55%
13wSentence Length21w
0.20Hedging0.60
0.2Bold4.9
4.6Lists4.7
0.00Emoji0.02
0.16Headings1.16
0.03Transitions0.25
Based on 16 + 24 text responses
FAQ
