GPT-4.1 vs OpenAI: GPT-5.6 Luna Pro
Compare GPT-4.1 and OpenAI: GPT-5.6 Luna Pro, both from OpenAI, context windows of 1.0M vs 1.1M, tested across 53 shared challenges.
Our Verdict
GPT-4.1
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
GPT-4.1
Input
$2.00
Output
$8.00
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
2.0× cheaper
Output
$6.00
1.3× cheaper
OpenAI: GPT-5.6 Luna Pro is cheaper on both — 2.0× input, 1.3× output
Writing DNA
Style Comparison
Similarity
51%
GPT-4.1 uses 3.1x more bold
GPT-4.1
OpenAI: GPT-5.6 Luna Pro
58%Vocabulary58%
19wSentence Length18w
0.38Hedging0.81
9.0Bold2.9
6.1Lists5.1
0.24Emoji0.54
1.01Headings1.10
0.07Transitions0.09
Based on 25 + 27 text responses
Research
What we learned reading every model
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