# System Card: Claude Fable 5 and Claude Mythos 5 [pdf]

> **Popularity potential 18/100 — review.**  
> Kind: `website` · Source: `web` · Fable confidence: 80%

System Card: Claude Fable 5 and Claude Mythos 5 [pdf]

## Scorecard

| Dimension | Score |
| --- | --- |
| Originality | 1/5 |
| Usefulness | 3/5 |
| Execution | 2/5 |
| Momentum | 1/5 |
| Fable fit | 4/5 |
| Code quality | 1/5 |

## Fable-5 evidence

- Hacker News article: Explicit model id: “Claude Fable”
- Confidence: **80%** 

## Signals

- Stars: 0 · Forks: 0 · Open issues: 0
- Language: — · License: —
- Last pushed: 2026-06-09T16:58:13.000Z
- Community reviews captured: 0

## Verdict

This is Anthropic's own system card PDF — a safety/capability disclosure document, not a project built with Fable 5. It belongs in a research index, not a 'things made with the model' catalog. Zero community traction and no code; the HN mention inflates the fable_evidence confidence beyond what the entry deserves.

## Links

- Live: https://www-cdn.anthropic.com/d00db56fa754a1b115b6dd7cb2e3c342ee809620.pdf
- Discovered at: https://www-cdn.anthropic.com/d00db56fa754a1b115b6dd7cb2e3c342ee809620.pdf

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_Rated by claude-sonnet-4-6 · 2026-06-15T10:26:28.772Z · fable.directory_

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