Claude Opus 4.1 vs GPT-4

Compare Claude Opus 4.1 by Anthropic against GPT-4 by OpenAI, in 2 community votes, claude opus 4.1 wins 100% of head-to-head duels, context windows of 200K vs 8K, tested across 15 shared challenges. Updated April 2026.

Which is better, Claude Opus 4.1 or GPT-4?

Claude Opus 4.1 is the better choice overall, winning 100% of 2 blind community votes on Rival. Claude Opus 4.1 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 4.1 and GPT-4

Claude Opus 4.1 is made by anthropic while GPT-4 is from openai. Claude Opus 4.1 has a 200K token context window compared to GPT-4's 8K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $30/M for GPT-4. In community voting, In 2 community votes, Claude Opus 4.1 wins 100% of head-to-head duels.

In 2 community votes, Claude Opus 4.1 wins 100% of head-to-head duels. Claude Opus 4.1 leads in Image Generation. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.

Image Generation: Claude Opus 4.1 wins 100% of votes
Our Verdict
Claude Opus 4.1
Claude Opus 4.1Winner
GPT-4
GPT-4Runner-up

Pick Claude Opus 4.1. In 2 blind votes, Claude Opus 4.1 wins 100% of the time. That's not luck.

Claude Opus 4.1 particularly excels in Image Generation.

Clear winner
Writing DNA

Style Comparison

Similarity
86%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1
GPT-4
61%Vocabulary59%
87wSentence Length18w
0.54Hedging1.10
5.1Bold0.8
6.7Lists2.5
0.38Emoji0.00
1.68Headings0.00
0.13Transitions0.45
Based on 17 + 15 text responses
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Claude Opus 4.1GPT-4

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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