Sources: about 200 companies accessing Mythos Preview through Project Glasswing have preserved their access despite a recent US government shutdown order
Anthropic researchers say Mythos Preview can now turn publicly disclosed software vulnerabilities, or N-days, into working exploits in hours instead of weeks
Anthropic researchers say Mythos Preview can now turn publicly disclosed software vulnerabilities, or N-days, into working exploits in hours instead of weeks
Anthropic's Mythos Preview can now turn newly disclosed software vulnerabilities into working exploits in hours instead of weeks …
Claude Mythos Preview is the first AI model to complete both of AISI's cyber ranges, which measure AI models' cyberattack capabilities; GPT-5.5 solved only one
In February 2026, we internally estimated that the length of cyber tasks AI models could complete had doubled every 4.7 months since late 2024 …
Mythos Preview is the first AI model to complete both of AISI's cyber ranges, which measure models' cyberattack capabilities; GPT-5.5 solved only one of them
In February 2026, we internally estimated that the length of cyber tasks AI models could complete had doubled every 4.7 months since late 2024 …
Cybersecurity analysis: GPT-5.5 reaches a similar level of performance as Mythos Preview and is the second model to solve a multi-step cyberattack simulation
In April, our evaluation of Anthropic's Claude Mythos Preview found that it represented a step up in cyber performance …
Cybersecurity analysis: GPT-5.5 reaches a similar level of performance as Mythos Preview and is the second model to solve a multi-step cyberattack simulation
In April, our evaluation of Anthropic's Claude Mythos Preview found that it represented a step up in cyber performance …
Sources: CISA doesn't have access to Mythos Preview, even as some other government agencies use it; Anthropic says it briefed CISA before Mythos' unveiling
The Cybersecurity and Infrastructure Security Agency doesn't have access to Anthropic's powerful new Mythos Preview model …
Sources: the US NSA is using Mythos Preview; one source says Mythos is also being widely used within the DoD, despite Anthropic's supply chain risk designation
- The department moved in February to cut off Anthropic and force its vendors to follow suit.
Sources say NSA is using Mythos Preview, and a source says it is also being used widely within the DoD, despite Anthropic's designation as a supply chain risk
- The department moved in February to cut off Anthropic and force its vendors to follow suit.