Claude 3 Sonnet vs GPT-5
Compare Claude 3 Sonnet by Anthropic against GPT-5 by OpenAI, tested across 13 shared challenges. Updated June 2026.
Which is better, Claude 3 Sonnet or GPT-5?
Claude 3 Sonnet and GPT-5 are both competitive models. Claude 3 Sonnet costs $3/M input tokens vs $1.25/M for GPT-5. Compare their real outputs side by side below.
Key Differences Between Claude 3 Sonnet and GPT-5
Claude 3 Sonnet is made by anthropic while GPT-5 is from openai. On pricing, Claude 3 Sonnet costs $3/M input tokens vs $1.25/M for GPT-5.
API pricing
Per 1M tokens
Claude 3 Sonnet
Input
$3.00
Output
$15.00
GPT-5
Input
$1.25
2.4× cheaper
Output
$10.00
1.5× cheaper
GPT-5 is cheaper on both — 2.4× input, 1.5× output
Our Verdict
GPT-5
Claude 3 SonnetRunner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, newer, bigger context window.
Too close to call
Writing DNA
Style Comparison
Similarity
47%
GPT-5 uses 18.9x more bold
Claude 3 Sonnet
GPT-5
48%Vocabulary65%
14wSentence Length13w
0.32Hedging0.20
0.0Bold0.2
3.6Lists4.6
0.00Emoji0.00
0.00Headings0.16
0.38Transitions0.03
Based on 4 + 16 text responses
FAQ
