DeepSeek V4 Pro vs GPT-5.6 Luna
Compare DeepSeek V4 Pro by DeepSeek against GPT-5.6 Luna by OpenAI, context windows of 1.0M vs 1.1M, tested across 54 shared challenges.
Our Verdict
DeepSeek V4 Pro
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
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
1.7× cheaper
GPT-5.6 Luna
Input
$1.00
1.7× cheaper
Output
$6.00
GPT-5.6 Luna wins input (1.7× cheaper)·DeepSeek V4 Pro wins output (1.7× cheaper)
Writing DNA
Style Comparison
Similarity
60%
DeepSeek V4 Pro uses 3.5x more emoji
DeepSeek V4 Pro
GPT-5.6 Luna
57%Vocabulary59%
18wSentence Length19w
0.52Hedging0.84
3.3Bold2.7
2.3Lists4.5
0.04Emoji0.00
0.45Headings1.20
0.15Transitions0.10
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
