GPT-4o mini vs OpenAI: GPT-5.6 Terra
Compare GPT-4o mini and OpenAI: GPT-5.6 Terra, both from OpenAI, context windows of 128K vs 1.1M, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Terra
GPT-4o miniRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Terra has the edge — bigger model tier, newer, bigger context window.
GPT-4o mini is 25x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-4o mini
Input
$0.15
17× cheaper
Output
$0.60
25× cheaper
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
GPT-4o mini is cheaper on both — 17× input, 25× output
Writing DNA
Style Comparison
Similarity
77%
GPT-4o mini uses 4.1x more transitions
GPT-4o mini
OpenAI: GPT-5.6 Terra
54%Vocabulary57%
18wSentence Length18w
0.84Hedging0.85
3.8Bold2.8
3.3Lists4.6
0.00Emoji0.00
1.03Headings1.12
0.23Transitions0.06
Based on 22 + 27 text responses
Research
What we learned reading every model
FAQ
