Claude Sonnet 4 vs GPT-5.4 Mini
Compare Claude Sonnet 4 by Anthropic against GPT-5.4 Mini by OpenAI, context windows of 200K vs 400K, tested across 53 shared challenges.
Our Verdict
Claude Sonnet 4
GPT-5.4 Mini
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-5.4 Mini is 3.3x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
GPT-5.4 Mini
Input
$0.75
4.0× cheaper
Output
$4.50
3.3× cheaper
GPT-5.4 Mini is cheaper on both — 4.0× input, 3.3× output
Writing DNA
Style Comparison
Similarity
55%
Claude Sonnet 4 uses 87.9x more emoji
Claude Sonnet 4
GPT-5.4 Mini
62%Vocabulary54%
111wSentence Length20w
0.40Hedging0.72
5.0Bold6.0
9.3Lists8.3
0.88Emoji0.00
2.16Headings2.11
0.33Transitions0.04
Based on 17 + 23 text responses
Research
What we learned reading every model
FAQ
