Gemini 2.0 Flash Thinking vs OpenAI: GPT-5.6 Luna Pro
Compare Gemini 2.0 Flash Thinking by Google AI against OpenAI: GPT-5.6 Luna Pro by OpenAI, context windows of 500K vs 1.1M, tested across 20 shared challenges.
Our Verdict
Gemini 2.0 Flash Thinking
OpenAI: GPT-5.6 Luna Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.0 Flash Thinking is 12x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.0 Flash Thinking
Input
$0.25
4.0× cheaper
Output
$0.50
12× cheaper
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
Output
$6.00
Gemini 2.0 Flash Thinking is cheaper on both — 4.0× input, 12× output
Writing DNA
Style Comparison
Similarity
50%
OpenAI: GPT-5.6 Luna Pro uses 53.7x more emoji
Gemini 2.0 Flash Thinking
OpenAI: GPT-5.6 Luna Pro
54%Vocabulary58%
15wSentence Length18w
0.64Hedging0.81
3.8Bold2.9
2.4Lists5.1
0.00Emoji0.54
0.03Headings1.10
0.30Transitions0.09
Based on 13 + 27 text responses
Research
What we learned reading every model
FAQ
