Claude Opus 4vsCypher Alpha (free)
Cypher Alpha (free) is the newer model, released after Claude Opus 4.
| Spec | Claude Opus 4 | Cypher Alpha (free) |
|---|---|---|
| Input price | $15/M tokens | — |
| Output price | $75/M tokens | — |
| Context window | 200K tokens | — |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Jul 2025 |
Our Verdict
Claude Opus 4
Cypher Alpha (free)Runner-up
Not enough votes to call it. On the specs, Claude Opus 4 has the edge: bigger model tier, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
Cypher Alpha (free)
Input
—
Output
—
Where to run it
1 host
Claude Opus 41 host
Cypher Alpha (free)
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
30%
Claude Opus 4 uses 118.4x more emoji
Claude Opus 4
Cypher Alpha (free)
65%Vocabulary64%
57wSentence Length15w
0.67Hedging0.34
3.8Bold0.7
6.8Lists2.3
1.18Emoji0.00
1.42Headings0.00
0.22Transitions0.16
Based on 27 + 15 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
Cypher Alpha (free) vs GPT-5New provider
Cypher Alpha (free) vs MiniMax M1New provider
Cypher Alpha (free) vs MiniMax M3New provider
Cypher Alpha (free) vs Claude Sonnet 4Cross-provider
Cypher Alpha (free) vs GPT-5.1-CodexNew provider
Cypher Alpha (free) vs GPT-5.1 Codex MaxNew provider
Cypher Alpha (free) vs GPT-5.1-Codex-MiniNew provider
Cypher Alpha (free) vs GPT-5.2New provider