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GPT-4.1 Mini vs Claude Opus 4

Compare GPT-4.1 Mini by OpenAI against Claude Opus 4 by Anthropic, context windows of 1.0M vs 200K, tested across 35 shared challenges. Updated April 2026.

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

GPT-4.1 Mini and Claude Opus 4 are both competitive models. GPT-4.1 Mini costs $0.4/M input tokens vs $15/M for Claude Opus 4. Context windows: 1048K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Mini and Claude Opus 4

GPT-4.1 Mini is made by openai while Claude Opus 4 is from anthropic. GPT-4.1 Mini has a 1048K token context window compared to Claude Opus 4's 200K. On pricing, GPT-4.1 Mini costs $0.4/M input tokens vs $15/M for Claude Opus 4.

Our Verdict
Claude Opus 4
Claude Opus 4
GPT-4.1 Mini
GPT-4.1 MiniRunner-up

No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, newer.

GPT-4.1 Mini is 47x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Claude Opus 4 uses 11.2x more emoji

GPT-4.1 Mini
Claude Opus 4
59%Vocabulary64%
19wSentence Length62w
0.46Hedging0.52
4.7Bold4.4
4.9Lists9.1
0.00Emoji0.11
0.76Headings1.87
0.17Transitions0.27
Based on 23 + 16 text responses
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GPT-4.1 MiniClaude Opus 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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