Claude 2 vs GPT-5.6 Luna Pro
Compare Claude 2 by Anthropic against GPT-5.6 Luna Pro by OpenAI, context windows of 100K vs 1.1M, tested across 5 shared challenges.
Our Verdict
Claude 2
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.
GPT-5.6 Luna Pro is 5.4x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 2
Input
$11.02
Output
$32.68
GPT-5.6 Luna Pro
Input
$1.00
11× cheaper
Output
$6.00
5.4× cheaper
GPT-5.6 Luna Pro is cheaper on both — 11× input, 5.4× output
Writing DNA
Style Comparison
Similarity
60%
GPT-5.6 Luna Pro uses 80.8x more hedging
Claude 2
GPT-5.6 Luna Pro
65%Vocabulary58%
13wSentence Length18w
0.00Hedging0.81
0.0Bold2.9
10.2Lists5.1
0.00Emoji0.54
0.00Headings1.10
0.00Transitions0.09
Based on 2 + 27 text responses
Research
What we learned reading every model
FAQ
