# Alleged Anthropic Mythos-class model checkpoint appears on Hugging Face

> Source: <https://www.getreadyforagents.com/news/mythos-class-claude-checkpoint-leak/>
> Published: 2026-11-01 19:06:56+00:00

# Alleged Anthropic Mythos-class model checkpoint appears on Hugging Face

An alleged Anthropic Mythos-class model checkpoint appeared on Hugging Face under username 'burner22' in a repository named 'numbat', according to a Hacker News thread. The leak suggests either a data breach or unauthorized model release.

## Topics

## Sources

- Social[HN thread](https://news.ycombinator.com/item?id=50326727)
- Official[Read article](https://huggingface.co/burner22/numbat)

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