Claude Sonnet 4.5 vs Optimus Alpha
Compare Claude Sonnet 4.5 by Anthropic against Optimus Alpha by OpenRouter, context windows of 200K vs 1.0M, tested across 14 shared challenges.
Our Verdict
Claude Sonnet 4.5
Optimus Alpha
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
Optimus Alpha
Input
—
Output
—
Writing DNA
Style Comparison
Similarity
48%
Claude Sonnet 4.5 uses 45.2x more emoji
Claude Sonnet 4.5
Optimus Alpha
64%Vocabulary63%
94wSentence Length18w
0.48Hedging0.55
4.9Bold7.7
8.0Lists5.7
0.45Emoji0.00
1.91Headings0.30
0.07Transitions0.27
Based on 20 + 10 text responses
Research
What we learned reading every model
FAQ
