Claude Opus 4.6vsCypher Alpha (free)
Claude Opus 4.6 is the newer model, released after Cypher Alpha (free).
| Spec | Claude Opus 4.6 | Cypher Alpha (free) |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $25/M tokens | — |
| Context window | 1.0M tokens | — |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Jul 2025 |
Our Verdict
Claude Opus 4.6
Cypher Alpha (free)Runner-up
Not enough votes to call it. On the specs, Claude Opus 4.6 has the edge: bigger model tier, newer, bigger context window, major provider backing.
Slight edge
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude Opus 4.6
Input
$5.00
Output
$25.00
Cypher Alpha (free)
Input
—
Output
—
Where to run it
4 hosts
Cypher Alpha (free)
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 12 Sep 2026.
Writing DNA
Style Comparison
Similarity
32%
Claude Opus 4.6 uses 115.5x more emoji
Claude Opus 4.6
Cypher Alpha (free)
56%Vocabulary64%
33wSentence Length15w
0.73Hedging0.34
5.3Bold0.7
2.7Lists2.3
1.16Emoji0.00
1.23Headings0.00
0.02Transitions0.16
Based on 26 + 15 text responses
Research
What we learned reading every model
FAQ
Common questions
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