GPT-5.4 Mini vs Inception: Mercury
Compare GPT-5.4 Mini by OpenAI against Inception: Mercury by Inception, context windows of 400K vs 32K, tested across 53 shared challenges.
Our Verdict
GPT-5.4 Mini
Inception: MercuryRunner-up
No community votes yet. On paper, GPT-5.4 Mini has the edge — newer, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4 Mini
Input
$0.75
13× cheaper
Output
$4.50
2.2× cheaper
Inception: Mercury
Input
$10.00
Output
$10.00
GPT-5.4 Mini is cheaper on both — 13× input, 2.2× output
Writing DNA
Style Comparison
Similarity
56%
Inception: Mercury uses 4.3x more emoji
GPT-5.4 Mini
Inception: Mercury
54%Vocabulary55%
20wSentence Length40w
0.72Hedging0.39
6.0Bold4.9
8.3Lists3.8
0.00Emoji0.04
2.11Headings1.04
0.04Transitions0.03
Based on 23 + 17 text responses
Research
What we learned reading every model
FAQ
