GPT-4o (Omni) vs GPT-5.2 Pro
Compare GPT-4o (Omni) and GPT-5.2 Pro, both from OpenAI, context windows of 128K vs 400K, tested across 31 shared challenges.
Our Verdict
GPT-5.2 Pro
GPT-4o (Omni)Runner-up
No community votes yet. On paper, GPT-5.2 Pro has the edge — newer, bigger context window.
GPT-4o (Omni) is 17x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4o (Omni)
Input
$2.50
8.4× cheaper
Output
$10.00
17× cheaper
GPT-5.2 Pro
Input
$21.00
Output
$168.00
GPT-4o (Omni) is cheaper on both — 8.4× input, 17× output
Writing DNA
Style Comparison
Similarity
46%
GPT-4o (Omni) uses 2.5x more emoji
GPT-4o (Omni)
GPT-5.2 Pro
54%Vocabulary62%
18wSentence Length19w
0.72Hedging0.39
7.3Bold8.6
5.6Lists3.8
0.03Emoji0.00
1.40Headings1.17
0.26Transitions0.02
Based on 24 + 10 text responses
Research
What we learned reading every model
FAQ
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