Aurora AlphavsClaude Fable 5.1
Aurora Alpha is cheaper than Claude Fable 5.1 at $0/M vs $10/M input tokens.
| Spec | Aurora Alpha | Claude Fable 5.1 |
|---|---|---|
| Input price | Free | $10/M tokens |
| Output price | Free | $50/M tokens |
| Context window | 128K tokens | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Sep 2026 |
Our Verdict
Claude Fable 5.1
Aurora AlphaRunner-up
Not enough votes to call it. On the specs, Claude Fable 5.1 has the edge: bigger model tier, newer, bigger context window, major provider backing.
Slight edge
API pricing
Cost per 1M tokens
Aurora Alpha
Input
$0.000
Output
$0.000
Claude Fable 5.1
Input
$10.00
Output
$50.00
Where to run it
4 hosts
Aurora Alpha
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
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