Gemini 3.1 Pro Preview vs OpenAI: GPT-5.6 Terra
Compare Gemini 3.1 Pro Preview by Google AI against OpenAI: GPT-5.6 Terra by OpenAI, context windows of 1.0M vs 1.1M, tested across 53 shared challenges.
Our Verdict
Gemini 3.1 Pro Preview
OpenAI: GPT-5.6 Terra
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
Gemini 3.1 Pro Preview
Input
$2.00
1.3× cheaper
Output
$12.00
1.3× cheaper
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
Gemini 3.1 Pro Preview is cheaper on both — 1.3× input, 1.3× output
Writing DNA
Style Comparison
Similarity
30%
OpenAI: GPT-5.6 Terra uses 2.9x more hedging
Gemini 3.1 Pro Preview
OpenAI: GPT-5.6 Terra
54%Vocabulary57%
18wSentence Length18w
0.29Hedging0.85
4.9Bold2.8
3.3Lists4.6
0.00Emoji0.00
0.72Headings1.12
0.14Transitions0.06
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
