Gemini 3 Flash Preview vs OpenAI: GPT-5.6 Terra
Compare Gemini 3 Flash Preview by Google AI against OpenAI: GPT-5.6 Terra by OpenAI, context windows of 1.0M vs 1.1M, tested across 54 shared challenges.
Our Verdict
Gemini 3 Flash 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.
Gemini 3 Flash Preview is 5.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3 Flash Preview
Input
$0.50
5.0× cheaper
Output
$3.00
5.0× cheaper
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
Gemini 3 Flash Preview is cheaper on both — 5.0× input, 5.0× output
Writing DNA
Style Comparison
Similarity
37%
Gemini 3 Flash Preview uses 2.6x more bold
Gemini 3 Flash Preview
OpenAI: GPT-5.6 Terra
55%Vocabulary57%
18wSentence Length18w
0.42Hedging0.85
7.1Bold2.8
4.5Lists4.6
0.00Emoji0.00
0.84Headings1.12
0.07Transitions0.06
Based on 24 + 27 text responses
Research
What we learned reading every model
FAQ
