GPT-5.2 vs Inception: Mercury 2
Compare GPT-5.2 by OpenAI against Inception: Mercury 2 by Inception, context windows of 400K vs 128K, tested across 52 shared challenges.
Our Verdict
GPT-5.2
Inception: Mercury 2Runner-up
No community votes yet. On paper, GPT-5.2 has the edge — bigger model tier, bigger context window, major provider backing.
Inception: Mercury 2 is 19x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.2
Input
$1.75
Output
$14.00
Inception: Mercury 2
Input
$0.25
7.0× cheaper
Output
$0.75
19× cheaper
Inception: Mercury 2 is cheaper on both — 7.0× input, 19× output
Writing DNA
Style Comparison
Similarity
57%
GPT-5.2 uses 2.2x more transitions
GPT-5.2
Inception: Mercury 2
64%Vocabulary53%
16wSentence Length22w
0.34Hedging0.40
9.4Bold6.6
3.9Lists2.6
0.06Emoji0.08
0.89Headings0.87
0.31Transitions0.14
Based on 15 + 23 text responses
Research
What we learned reading every model
FAQ
