# Claude Mythos: The Model Anthropic Built and Decided Not to Sell

> Source: <https://pub.towardsai.net/claude-mythos-the-model-anthropic-built-and-decided-not-to-sell-47d301d26da1?source=rss----98111c9905da---4>
> Published: 2026-09-19 21:31:01+00:00

It found a bug that automa‍te‍d test‌i‍ng h⁠a‌d run‍ pas​t fi‍ve mi‍llion tim​es. Then, three day​s after​ its success‍or shipp⁠ed, the US…
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