OpenAI: GPT-5.6 Terra vs OpenAI o4 Mini High
Compare OpenAI: GPT-5.6 Terra and OpenAI o4 Mini High, both from OpenAI, context windows of 1.1M vs 200K, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Terra
OpenAI o4 Mini HighRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Terra has the edge — bigger model tier, newer, bigger context window.
OpenAI o4 Mini High is 3.4x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
OpenAI o4 Mini High
Input
$1.10
2.3× cheaper
Output
$4.40
3.4× cheaper
OpenAI o4 Mini High is cheaper on both — 2.3× input, 3.4× output
Writing DNA
Style Comparison
Similarity
49%
OpenAI: GPT-5.6 Terra uses 275.5x more bold
OpenAI: GPT-5.6 Terra
OpenAI o4 Mini High
57%Vocabulary70%
18wSentence Length18w
0.85Hedging0.33
2.8Bold0.0
4.6Lists1.3
0.00Emoji0.02
1.12Headings0.00
0.06Transitions0.04
Based on 27 + 14 text responses
Research
What we learned reading every model
FAQ
