{"slug": "alleged-anthropic-mythos-class-model-checkpoint-appears-on-hugging-face", "title": "Alleged Anthropic Mythos-class model checkpoint appears on Hugging Face", "summary": "An alleged Anthropic Mythos-class model checkpoint surfaced on Hugging Face in a repository named 'numbat' under the username 'burner22', according to a Hacker News thread cited by the Prefactor AI pipeline. The report frames the posting as either a data breach or an unauthorized model release, though no confirmation from Anthropic or Hugging Face is included.", "body_md": "# Alleged Anthropic Mythos-class model checkpoint appears on Hugging Face\n\nAn 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.\n\n## Topics\n\n## Sources\n\n- Social[HN thread](https://news.ycombinator.com/item?id=50326727)\n- Official[Read article](https://huggingface.co/burner22/numbat)\n\n## Go deeper\n\nThis intelligence is sourced automatically from public sources across the web and synthesised by the Prefactor AI pipeline. Stories are reviewed before publication.", "url": "https://wpnews.pro/news/alleged-anthropic-mythos-class-model-checkpoint-appears-on-hugging-face", "canonical_source": "https://www.getreadyforagents.com/news/mythos-class-claude-checkpoint-leak/", "published_at": "2026-11-01 19:06:56+00:00", "updated_at": "2026-11-01 19:20:35.921486+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-safety"], "entities": ["Anthropic", "Hugging Face", "Mythos", "burner22", "numbat", "Hacker News", "Prefactor AI"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/alleged-anthropic-mythos-class-model-checkpoint-appears-on-hugging-face", "markdown": "https://wpnews.pro/news/alleged-anthropic-mythos-class-model-checkpoint-appears-on-hugging-face.md", "text": "https://wpnews.pro/news/alleged-anthropic-mythos-class-model-checkpoint-appears-on-hugging-face.txt", "jsonld": "https://wpnews.pro/news/alleged-anthropic-mythos-class-model-checkpoint-appears-on-hugging-face.jsonld"}}