Mentatcurated
Model

Claude Mythos

Anthropic's frontier model, restricted to vetted partners — the same model as the public Claude Fable 5 but with its cybersecurity and biology safeguards lifted, strongest at finding software vulnerabilities and writing exploits.

4 finds · high confidence
Accesspaid
MakerAnthropic
Released2026-04-07
Visit www.anthropic.com/claude/mythos →

The lenses

Scored on its own merits — not rolled up from the finds we publish.

Novelty 4
Impact · breadth 2
Impact · depth 4
Actionable 3
Substance 4
Hype 4

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