Claude 2 vs OpenAI: GPT-5.6 Luna
Compare Claude 2 by Anthropic against OpenAI: GPT-5.6 Luna by OpenAI, context windows of 100K vs 1.1M, tested across 5 shared challenges.
Our Verdict
Claude 2
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.
OpenAI: GPT-5.6 Luna 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
OpenAI: GPT-5.6 Luna
Input
$1.00
11× cheaper
Output
$6.00
5.4× cheaper
OpenAI: GPT-5.6 Luna is cheaper on both — 11× input, 5.4× output
Writing DNA
Style Comparison
Similarity
59%
OpenAI: GPT-5.6 Luna uses 83.6x more hedging
Claude 2
OpenAI: GPT-5.6 Luna
65%Vocabulary59%
13wSentence Length19w
0.00Hedging0.84
0.0Bold2.7
10.2Lists4.5
0.00Emoji0.00
0.00Headings1.20
0.00Transitions0.10
Based on 2 + 27 text responses
Research
What we learned reading every model
FAQ
