Claude Opus 4.8 vs GPT-4.1 Nano
Compare Claude Opus 4.8 by Anthropic against GPT-4.1 Nano by OpenAI, context windows of 1.0M vs 1.0M, tested across 53 shared challenges.
Our Verdict
Claude Opus 4.8
GPT-4.1 NanoRunner-up
No community votes yet. On paper, Claude Opus 4.8 has the edge — bigger model tier, newer.
GPT-4.1 Nano is 63x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4.8
Input
$5.00
Output
$25.00
GPT-4.1 Nano
Input
$0.10
50× cheaper
Output
$0.40
63× cheaper
GPT-4.1 Nano is cheaper on both — 50× input, 63× output
Writing DNA
Style Comparison
Similarity
48%
Claude Opus 4.8 uses 77.6x more emoji
Claude Opus 4.8
GPT-4.1 Nano
60%Vocabulary57%
19wSentence Length25w
0.46Hedging0.72
4.7Bold5.6
3.2Lists4.9
0.78Emoji0.00
1.15Headings0.71
0.04Transitions0.22
Based on 27 + 24 text responses
Research
What we learned reading every model
FAQ
