Claude Opus 4.1 vs OpenRouter Fusion · Budget (Jun 2026)
Compare Claude Opus 4.1 by Anthropic against OpenRouter Fusion · Budget (Jun 2026) by OpenRouter, context windows of 200K vs 256K, tested across 44 shared challenges. Updated June 2026.
Which is better, Claude Opus 4.1 or OpenRouter Fusion · Budget (Jun 2026)?
Claude Opus 4.1 and OpenRouter Fusion · Budget (Jun 2026) are both competitive models. Context windows: 200K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and OpenRouter Fusion · Budget (Jun 2026)
Claude Opus 4.1 is made by anthropic while OpenRouter Fusion · Budget (Jun 2026) is from openrouter. Claude Opus 4.1 has a 200K token context window compared to OpenRouter Fusion · Budget (Jun 2026)'s 256K.
API pricing
Per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
OpenRouter Fusion · Budget (Jun 2026)
Input
—
Output
—
Our Verdict
Claude Opus 4.1
OpenRouter Fusion · Budget (Jun 2026)
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
52%
Claude Opus 4.1 uses 38.4x more emoji
Claude Opus 4.1
OpenRouter Fusion · Budget (Jun 2026)
61%Vocabulary58%
87wSentence Length22w
0.54Hedging0.13
5.1Bold3.8
6.7Lists1.7
0.38Emoji0.01
1.68Headings0.93
0.13Transitions0.17
Based on 17 + 27 text responses
FAQ
