> Since then, this weakness has been missed by every fuzzer and human who has reviewed the code, and points to the qualitative difference that advanced language

> Since then, this weakness has been missed by every fuzzer and human who has reviewed the code, and points to the qualitative difference that advanced language models provide. [^1] > At no point in time does the program take some easy-to-identify action that should be prohibited, and so tools like fuzzers can’t easily identify such weaknesses. [^2] [^1]: https://red.anthropic.com/2026/mythos-preview/#:~:text=Since%20then%2C%20this%20weakness%20has%20been%20missed%20by%20every%20fuzzer%20and%20human%20who%20has%20reviewed%20the%20code%2C%20and%20points%20to%20the%20qualitative%20difference%20that%20advanced%20language%20models%20provide. https://red.anthropic.com/2026/mythos-preview/#:~:text=Since... [^2]: https://red.anthropic.com/2026/mythos-preview/#:~:text=At%20no%20point%20in%20time%20does%20the%20program%20take%20some%20easy%2Dto%2Didentify%20action%20that%20should%20be%20prohibited%2C%20and%20so%20tools%20like%20fuzzers%20can’t%20easily%20identify%20such%20weaknesses. https://red.anthropic.com/2026/mythos-preview/#:~:text=At%20...