xAI: Grok 4.5 vs Inception: Mercury 2
Compare xAI: Grok 4.5 by xAI against Inception: Mercury 2 by Inception, context windows of 500K vs 128K, tested across 53 shared challenges.
Our Verdict
xAI: Grok 4.5
Inception: Mercury 2Runner-up
No community votes yet. On paper, xAI: Grok 4.5 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Inception: Mercury 2 is 8.0x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
xAI: Grok 4.5
Input
$2.00
Output
$6.00
Inception: Mercury 2
Input
$0.25
8.0× cheaper
Output
$0.75
8.0× cheaper
Inception: Mercury 2 is cheaper on both — 8.0× input, 8.0× output
Writing DNA
Style Comparison
Similarity
59%
Inception: Mercury 2 uses 2.7x more bold
xAI: Grok 4.5
Inception: Mercury 2
61%Vocabulary53%
16wSentence Length22w
0.23Hedging0.40
2.5Bold6.6
2.4Lists2.6
0.09Emoji0.08
0.48Headings0.87
0.06Transitions0.14
Based on 27 + 23 text responses
Research
What we learned reading every model
FAQ
