Claude Opus 4.8 vs GPT-4o mini
Compare Claude Opus 4.8 by Anthropic against GPT-4o mini by OpenAI, context windows of 1.0M vs 128K, tested across 53 shared challenges.
Our Verdict
Claude Opus 4.8
GPT-4o miniRunner-up
No community votes yet. On paper, Claude Opus 4.8 has the edge — bigger model tier, newer, bigger context window.
GPT-4o mini is 42x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Opus 4.8
Input
$5.00
Output
$25.00
GPT-4o mini
Input
$0.15
33× cheaper
Output
$0.60
42× cheaper
GPT-4o mini is cheaper on both — 33× input, 42× output
Writing DNA
Style Comparison
Similarity
38%
Claude Opus 4.8 uses 77.6x more emoji
Claude Opus 4.8
GPT-4o mini
60%Vocabulary54%
19wSentence Length18w
0.46Hedging0.84
4.7Bold3.8
3.2Lists3.3
0.78Emoji0.00
1.15Headings1.03
0.04Transitions0.23
Based on 27 + 22 text responses
Research
What we learned reading every model
FAQ
