Google: Gemini 3.1 Flash Lite Preview vs OpenAI: GPT-5.6 Luna Pro
Compare Google: Gemini 3.1 Flash Lite Preview by Google AI against OpenAI: GPT-5.6 Luna Pro by OpenAI, context windows of 1.0M vs 1.1M, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Luna Pro
Google: Gemini 3.1 Flash Lite PreviewRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Luna Pro has the edge — bigger model tier, newer.
Google: Gemini 3.1 Flash Lite Preview is 4.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Google: Gemini 3.1 Flash Lite Preview
Input
$0.25
4.0× cheaper
Output
$1.50
4.0× cheaper
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
Output
$6.00
Google: Gemini 3.1 Flash Lite Preview is cheaper on both — 4.0× input, 4.0× output
Writing DNA
Style Comparison
Similarity
42%
OpenAI: GPT-5.6 Luna Pro uses 53.7x more emoji
Google: Gemini 3.1 Flash Lite Preview
OpenAI: GPT-5.6 Luna Pro
56%Vocabulary58%
18wSentence Length18w
0.28Hedging0.81
5.4Bold2.9
3.9Lists5.1
0.00Emoji0.54
0.95Headings1.10
0.07Transitions0.09
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
