OpenAI: GPT-5.6 Terra vs OpenAI o3
Compare OpenAI: GPT-5.6 Terra and OpenAI o3, both from OpenAI, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Terra
OpenAI o3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Terra
Input
$2.50
4.0× cheaper
Output
$15.00
2.7× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
OpenAI: GPT-5.6 Terra is cheaper on both — 4.0× input, 2.7× output
Writing DNA
Style Comparison
Similarity
52%
OpenAI: GPT-5.6 Terra uses 4.0x more bold
OpenAI: GPT-5.6 Terra
OpenAI o3
57%Vocabulary68%
18wSentence Length14w
0.85Hedging0.26
2.8Bold0.7
4.6Lists3.0
0.00Emoji0.00
1.12Headings0.38
0.06Transitions0.12
Based on 27 + 16 text responses
Research
What we learned reading every model
FAQ
