Claude Sonnet 4.5 vs Solar Pro 3
Compare Claude Sonnet 4.5 by Anthropic against Solar Pro 3 by Upstage, context windows of 200K vs 128K, tested across 30 shared challenges.
Our Verdict
Claude Sonnet 4.5
Solar Pro 3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
API pricing
Cost per 1M tokens
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Solar Pro 3
Input
$0.000
Output
$0.000
Writing DNA
Style Comparison
Similarity
38%
Claude Sonnet 4.5 uses 4.5x more sentence length
Claude Sonnet 4.5
Solar Pro 3
64%Vocabulary50%
94wSentence Length21w
0.48Hedging0.42
4.9Bold6.5
8.0Lists2.2
0.45Emoji0.17
1.91Headings0.56
0.07Transitions0.12
Based on 20 + 18 text responses
Research
What we learned reading every model
FAQ
