GPT-4o (Omni) vs GPT-5 Pro
Compare GPT-4o (Omni) and GPT-5 Pro, both from OpenAI, context windows of 128K vs 400K, tested across 42 shared challenges.
Our Verdict
GPT-5 Pro
GPT-4o (Omni)Runner-up
No community votes yet. On paper, GPT-5 Pro has the edge — newer, bigger context window.
GPT-4o (Omni) is 12x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4o (Omni)
Input
$2.50
6.0× cheaper
Output
$10.00
12× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
GPT-4o (Omni) is cheaper on both — 6.0× input, 12× output
Writing DNA
Style Comparison
Similarity
32%
GPT-4o (Omni) uses 734.5x more bold
GPT-4o (Omni)
GPT-5 Pro
54%Vocabulary65%
18wSentence Length15w
0.72Hedging0.32
7.3Bold0.0
5.6Lists2.9
0.03Emoji0.00
1.40Headings0.00
0.26Transitions0.01
Based on 24 + 11 text responses
Research
What we learned reading every model
FAQ
Common questions
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