Claude Opus 4.1 vs GPT-4o mini

Compare Claude Opus 4.1 by Anthropic against GPT-4o mini by OpenAI, context windows of 200K vs 128K, tested across 22 shared challenges. Updated April 2026.

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

Claude Opus 4.1 and GPT-4o mini are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $0.15/M for GPT-4o mini. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Opus 4.1 and GPT-4o mini

Claude Opus 4.1 is made by anthropic while GPT-4o mini is from openai. Claude Opus 4.1 has a 200K token context window compared to GPT-4o mini's 128K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $0.15/M for GPT-4o mini.

Our Verdict
Claude Opus 4.1
Claude Opus 4.1
GPT-4o mini
GPT-4o miniRunner-up

No community votes yet. On paper, Claude Opus 4.1 has the edge — bigger model tier, newer, bigger context window.

GPT-4o mini is 125x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
94%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1
GPT-4o mini
61%Vocabulary54%
87wSentence Length18w
0.54Hedging0.84
5.1Bold3.8
6.7Lists3.3
0.38Emoji0.00
1.68Headings1.03
0.13Transitions0.23
Based on 17 + 22 text responses
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Claude Opus 4.1GPT-4o mini

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