Market & Regulation

Anthropic's Mythos AI model reportedly leaked

The Rundown AIApril 23, 2026medium confidence

Why it matters

→This incident highlights the challenges of securing advanced AI models and the risks associated with unauthorized access.

Anthropic's Mythos AI model reportedly leaked — ©The Rundown AI

Access to Anthropic's Mythos model was leaked to a Discord group shortly after its restricted release. The group utilized leaked information to gain access, despite Anthropic's concerns about the model's potential dangers.

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The story around this

Earlier coverage that leads up to this article, and what followed. Lines connect each piece to the closest one after it, converging here.

Anthropic Holds Back Mythos Model

3 developments

Apr 10 · Lev Selector
Anthropic Holds Back Mythos Model
Apr 10 · Fireship
Anthropic restricts access to Mythos model↳ Anthropic cites safety concerns as the reason for restricting general user access to the Mythos model.
Apr 23 · The Rundown AI
Anthropic's Mythos AI model reportedly leaked (This article)↳ The leaked Mythos model was accessed by a Discord group using stolen credentials.

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