GPT-5.4 Mini vs Inception: Mercury 2
Compare GPT-5.4 Mini by OpenAI against Inception: Mercury 2 by Inception, context windows of 400K vs 128K, tested across 53 shared challenges.
Our Verdict
GPT-5.4 Mini
Inception: Mercury 2Runner-up
No community votes yet. On paper, GPT-5.4 Mini has the edge — bigger context window, major provider backing.
Inception: Mercury 2 is 6.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4 Mini
Input
$0.75
Output
$4.50
Inception: Mercury 2
Input
$0.25
3.0× cheaper
Output
$0.75
6.0× cheaper
Inception: Mercury 2 is cheaper on both — 3.0× input, 6.0× output
Writing DNA
Style Comparison
Similarity
50%
Inception: Mercury 2 uses 8.2x more emoji
GPT-5.4 Mini
Inception: Mercury 2
54%Vocabulary53%
20wSentence Length22w
0.72Hedging0.40
6.0Bold6.6
8.3Lists2.6
0.00Emoji0.08
2.11Headings0.87
0.04Transitions0.14
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
