GPT-4o (Omni) vs OpenAI: GPT-5.6 Sol
Compare GPT-4o (Omni) and OpenAI: GPT-5.6 Sol, both from OpenAI, context windows of 128K vs 1.1M, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Sol
GPT-4o (Omni)Runner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — newer, bigger context window.
GPT-4o (Omni) is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4o (Omni)
Input
$2.50
2.0× cheaper
Output
$10.00
3.0× cheaper
OpenAI: GPT-5.6 Sol
Input
$5.00
Output
$30.00
GPT-4o (Omni) is cheaper on both — 2.0× input, 3.0× output
Writing DNA
Style Comparison
Similarity
58%
GPT-4o (Omni) uses 3.4x more transitions
GPT-4o (Omni)
OpenAI: GPT-5.6 Sol
54%Vocabulary63%
18wSentence Length15w
0.72Hedging0.79
7.3Bold3.4
5.6Lists3.8
0.03Emoji0.03
1.40Headings0.95
0.26Transitions0.08
Based on 24 + 27 text responses
Research
What we learned reading every model
FAQ
