GPT-5.4 Nano vs Inception: Mercury
Compare GPT-5.4 Nano by OpenAI against Inception: Mercury by Inception, context windows of 400K vs 32K, tested across 53 shared challenges.
Our Verdict
GPT-5.4 Nano
Inception: Mercury
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-5.4 Nano is 8.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4 Nano
Input
$0.20
50× cheaper
Output
$1.25
8.0× cheaper
Inception: Mercury
Input
$10.00
Output
$10.00
GPT-5.4 Nano is cheaper on both — 50× input, 8.0× output
Writing DNA
Style Comparison
Similarity
70%
Inception: Mercury uses 4.3x more emoji
GPT-5.4 Nano
Inception: Mercury
51%Vocabulary55%
21wSentence Length40w
0.58Hedging0.39
7.1Bold4.9
5.5Lists3.8
0.01Emoji0.04
1.39Headings1.04
0.05Transitions0.03
Based on 23 + 17 text responses
Research
What we learned reading every model
FAQ
