OpenAI: GPT-5.6 Sol vs Solar Pro 3
Compare OpenAI: GPT-5.6 Sol by OpenAI against Solar Pro 3 by Upstage, context windows of 1.1M vs 128K, tested across 39 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Sol
Solar Pro 3Runner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — bigger model tier, newer, bigger context window, major provider backing.
Slight edge
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Sol
Input
$5.00
Output
$30.00
Solar Pro 3
Input
$0.000
Output
$0.000
Writing DNA
Style Comparison
Similarity
48%
Solar Pro 3 uses 5.3x more emoji
OpenAI: GPT-5.6 Sol
Solar Pro 3
63%Vocabulary50%
15wSentence Length21w
0.79Hedging0.42
3.4Bold6.5
3.8Lists2.2
0.03Emoji0.17
0.95Headings0.56
0.08Transitions0.12
Based on 27 + 18 text responses
Research
What we learned reading every model
FAQ
Common questions
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