Claude Opus 4 vs GPT-4
Compare Claude Opus 4 by Anthropic against GPT-4 by OpenAI, context windows of 200K vs 8K, tested across 26 shared challenges. Updated May 2026.
Which is better, Claude Opus 4 or GPT-4?
Claude Opus 4 and GPT-4 are both competitive models. Claude Opus 4 costs $15/M input tokens vs $30/M for GPT-4. Context windows: 200K vs 8K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4 and GPT-4
Claude Opus 4 is made by anthropic while GPT-4 is from openai. Claude Opus 4 has a 200K token context window compared to GPT-4's 8K. On pricing, Claude Opus 4 costs $15/M input tokens vs $30/M for GPT-4.
API pricing
Per 1M tokens
Claude Opus 4
Input
$15.00
2.0× cheaper
Output
$75.00
GPT-4
Input
$30.00
Output
$60.00
1.3× cheaper
Claude Opus 4 wins input (2.0× cheaper)·GPT-4 wins output (1.3× cheaper)
Our Verdict
Claude Opus 4
GPT-4Runner-up
No community votes yet. On paper, Claude Opus 4 has the edge — newer, bigger context window.
Too close to call
Writing DNA
Style Comparison
Similarity
51%
Claude Opus 4 uses 11.2x more emoji
Claude Opus 4
GPT-4
64%Vocabulary59%
62wSentence Length18w
0.52Hedging1.10
4.4Bold0.8
9.1Lists2.5
0.11Emoji0.00
1.87Headings0.00
0.27Transitions0.45
Based on 16 + 15 text responses
FAQ
