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[ARTICLE · art-134798] src=pub.towardsai.net ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

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

Anthropic built an AI model called Claude Mythos that discovered a bug which automated testing had missed across five million runs, and the company chose not to release it, according to a Towards AI report. The model's successor shipped three days before the US government took action, the report states.

by read1 min views2 publishedSep 19, 2026

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… Continue reading on Towards AI »

source & further reading
pub.towardsai.net — original article Agent Skills vs MCP Tools: We Measured 6,434 Skills. The Median Costs You 78 Tokens, a Tool 177.5. Your AI Agent’s Reasoning Isn’t as Private as You Think The DROP TABLE Failure Mode: Why Autonomous SRE Agents Can’t Be Trusted With DDL Keys
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