Claude Sonnet 4.5 vs Inception: Mercury 2
Compare Claude Sonnet 4.5 by Anthropic against Inception: Mercury 2 by Inception, context windows of 200K vs 128K, tested across 42 shared challenges.
Our Verdict
Claude Sonnet 4.5
Inception: Mercury 2Runner-up
No community votes yet. On paper, Claude Sonnet 4.5 has the edge — bigger model tier, bigger context window, major provider backing.
Inception: Mercury 2 is 20x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Inception: Mercury 2
Input
$0.25
12× cheaper
Output
$0.75
20× cheaper
Inception: Mercury 2 is cheaper on both — 12× input, 20× output
Writing DNA
Style Comparison
Similarity
45%
Claude Sonnet 4.5 uses 5.5x more emoji
Claude Sonnet 4.5
Inception: Mercury 2
64%Vocabulary53%
94wSentence Length22w
0.48Hedging0.40
4.9Bold6.6
8.0Lists2.6
0.45Emoji0.08
1.91Headings0.87
0.07Transitions0.14
Based on 20 + 23 text responses
Research
What we learned reading every model
FAQ
