Gemini 2.5 Pro Preview 06-05 vs OpenAI: GPT-5.6 Luna
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against OpenAI: GPT-5.6 Luna by OpenAI, context windows of 1.0M vs 1.1M, tested across 44 shared challenges.
Our Verdict
Gemini 2.5 Pro Preview 06-05
OpenAI: GPT-5.6 Luna
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 2.5 Pro Preview 06-05
Input
$1.25
Output
$10.00
OpenAI: GPT-5.6 Luna
Input
$1.00
1.3× cheaper
Output
$6.00
1.7× cheaper
OpenAI: GPT-5.6 Luna is cheaper on both — 1.3× input, 1.7× output
Writing DNA
Style Comparison
Similarity
41%
OpenAI: GPT-5.6 Luna uses 2.7x more hedging
Gemini 2.5 Pro Preview 06-05
OpenAI: GPT-5.6 Luna
51%Vocabulary59%
15wSentence Length19w
0.31Hedging0.84
4.8Bold2.7
4.1Lists4.5
0.00Emoji0.00
0.98Headings1.20
0.05Transitions0.10
Based on 20 + 27 text responses
Research
What we learned reading every model
FAQ
