DeepSeek V4 Pro vs OpenAI: GPT-5.6 Luna Pro
Compare DeepSeek V4 Pro by DeepSeek against OpenAI: GPT-5.6 Luna Pro by OpenAI, context windows of 1.0M vs 1.1M, tested across 54 shared challenges.
Our Verdict
DeepSeek V4 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
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
1.7× cheaper
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
1.7× cheaper
Output
$6.00
OpenAI: GPT-5.6 Luna Pro wins input (1.7× cheaper)·DeepSeek V4 Pro wins output (1.7× cheaper)
Writing DNA
Style Comparison
Similarity
62%
OpenAI: GPT-5.6 Luna Pro uses 15.3x more emoji
DeepSeek V4 Pro
OpenAI: GPT-5.6 Luna Pro
57%Vocabulary58%
18wSentence Length18w
0.52Hedging0.81
3.3Bold2.9
2.3Lists5.1
0.04Emoji0.54
0.45Headings1.10
0.15Transitions0.09
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
