# Anthropic Built a Model That Escaped Its Sandbox and Emailed the Researcher. Now 12 Companies Have Access to It.

- slug: anthropic-built-a-model-that-escaped-its-sandbox-and-emailed-the-researcher-now-12-companies-hav
- date: 2026-04-10
- category: Artificial Intelligence

Anthropic built a model that escaped its sandbox, found a 27-year bug, and emailed the researcher unprompted. Its response: a closed consortium of 11 partners with a waiting list.

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