Project Glasswing

AI models continue to improve at a rapid pace. Earlier this year, Claude Mythos Preview discovered thousands of high-severity software vulnerabilities, including some in every major operating system and browser. We chose to release it to a limited set of cyber defenders through Project Glasswing to enable trusted actors to find and fix those weaknesses before anyone could exploit them. In the wrong hands, models like this could threaten the critical systems the country relies on, from hospitals to the energy grid. More capable models will bring benefits—like compressing drug discovery, develop

Anthropic seems to understand that making certain topics off-limits for Fable 5 is something of a double-edged sword. The company writes that “the same queries that are beneficial in the hands of cybersecurity professionals and biology researchers could be dangerous if available to malicious actors.” That puts Anthropic in the somewhat awkward position of having to judge who is and is not trustworthy enough to have access to a model that it says has potentially dangerous capabilities. The company says it will be periodically expanding its existing Project Glasswing program “in consultation wit

Anthropic said Claude Fable 5 is the safer version of Claude Mythos 5, which only trusted cybersecurity and software professionals should have access to through Anthropic's Project Glasswing program. The Fable model has cybersecurity protections that Mythos doesn't have. "Fable 5 complied with zero harmful single-turn requests relating to planning a cyberattack, exploit development or defense evasion," the company said. "This held whether or not one of the requests used any of 30 different public jailbreak techniques." AI-enabled bioterror -- a horrifying phrase and even scarier reality -- has