Claude Opus 4 vs GPT-5 Mini
Compare Claude Opus 4 by Anthropic against GPT-5 Mini by OpenAI, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4 or GPT-5 Mini?
Claude Opus 4 and GPT-5 Mini are both competitive models. Claude Opus 4 costs $15/M input tokens vs $0.25/M for GPT-5 Mini. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4 and GPT-5 Mini
Claude Opus 4 is made by anthropic while GPT-5 Mini is from openai. On pricing, Claude Opus 4 costs $15/M input tokens vs $0.25/M for GPT-5 Mini.
API pricing
Per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
GPT-5 Mini
Input
$0.25
60× cheaper
Output
$2.00
38× cheaper
GPT-5 Mini is cheaper on both — 60× input, 38× output
Our Verdict
Claude Opus 4
GPT-5 Mini
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-5 Mini is 38x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
46%
Claude Opus 4 uses 444.0x more bold
Claude Opus 4
GPT-5 Mini
64%Vocabulary62%
62wSentence Length21w
0.52Hedging0.16
4.4Bold0.0
9.1Lists3.4
0.11Emoji0.00
1.87Headings0.00
0.27Transitions0.05
Based on 16 + 15 text responses
FAQ
