Cypher Alpha (free) vs Claude Opus 4

Compare Cypher Alpha (free) by OpenRouter against Claude Opus 4 by Anthropic, tested across 18 shared challenges. Updated April 2026.

Which is better, Cypher Alpha (free) or Claude Opus 4?

Cypher Alpha (free) and Claude Opus 4 are both competitive models. Compare their real outputs side by side below.

Key Differences Between Cypher Alpha (free) and Claude Opus 4

Cypher Alpha (free) is made by openrouter while Claude Opus 4 is from anthropic.

Our Verdict
Claude Opus 4
Claude Opus 4
Cypher Alpha (free)
Cypher Alpha (free)Runner-up

No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, bigger context window, major provider backing.

Too close to call
Writing DNA

Style Comparison

Similarity
76%

Claude Opus 4 uses 11.2x more emoji

Cypher Alpha (free)
Claude Opus 4
64%Vocabulary64%
15wSentence Length62w
0.34Hedging0.52
0.7Bold4.4
2.3Lists9.1
0.00Emoji0.11
0.00Headings1.87
0.16Transitions0.27
Based on 15 + 16 text responses
vs

Ask them anything yourself

Cypher Alpha (free)Claude 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
Free preview13 of 58 slides
FAQ

Common questions