Gemini 1.5 Pro vs OpenAI: GPT-5.6 Luna Pro
Compare Gemini 1.5 Pro by Google AI against OpenAI: GPT-5.6 Luna Pro by OpenAI, context windows of 1.0M vs 1.1M, tested across 18 shared challenges.
Our Verdict
Gemini 1.5 Pro
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.
Too close to call
API pricing
Cost per 1M tokens
Gemini 1.5 Pro
Input
$3.50
Output
$10.50
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
3.5× cheaper
Output
$6.00
1.8× cheaper
OpenAI: GPT-5.6 Luna Pro is cheaper on both — 3.5× input, 1.8× output
Writing DNA
Style Comparison
Similarity
65%
OpenAI: GPT-5.6 Luna Pro uses 53.7x more emoji
Gemini 1.5 Pro
OpenAI: GPT-5.6 Luna Pro
61%Vocabulary58%
15wSentence Length18w
0.80Hedging0.81
3.7Bold2.9
3.3Lists5.1
0.00Emoji0.54
0.08Headings1.10
0.09Transitions0.09
Based on 8 + 27 text responses
Research
What we learned reading every model
FAQ
