US cybersecurity coordinator finally got access to Mythos Preview, report says.
The Cybersecurity and Infrastructure Security Agency CISA gained access to the limited release cybersecurity-focused model last week, Nextgov/FCW reports. …
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AI cybersecurity updates for MDASH, Mythos, and GPT-5.5.
On Wednesday, the AISI, which evaluates AI models for the British government, said both Anthropic’s Claude Mythos Preview and OpenAI’s GPT-5.5 showed progress well above previous trends on cybersecurity testing. …
Anthropic’s Mythos rollout has missed America’s cybersecurity agency
Several US federal agencies are taking up Anthropic’s new cybersecurity model to find vulnerabilities, but one is reportedly not getting in on the action: the nation’s central cybersecurity coordinator. …
China’s Z.ai claims it can match Mythos on cybersecurity
China’s Zhipu AI Z.ai released its open-weight GLM-5.2, and some researchers have claimed that it matches Mythos in certain bug-finding and cybersecurity scenarios. …
Anthropic’s new cybersecurity model could get it back in the government’s good graces
… But some of the ice may reportedly be melting between the two, thanks to Anthropic’s buzzy new cybersecurity-focused model: Claude Mythos Preview. …
OpenAI’s new security model is for ‘critical cyber defenders’ only
OpenAI is preparing to launch a new frontier cybersecurity model, GPT-5.5-Cyber. …
Anthropic’s Mythos breach was humiliating
… Even so, early reports from parties with access suggest Mythos is particularly adept in cybersecurity. …
Anthropic releases a new Opus model amid Mythos Preview buzz
… Opus 4.7 comes on the heels of Mythos Preview, the buzzy cybersecurity-focused model Anthropic announced earlier this month, which the company has said is its most powerful model overall. …
Claude Fable is too scared to teach you about the powerhouse of the cell
… While I could not meaningfully test distillation, Fable seemed more willing to answer questions about chemistry and cybersecurity. …
Cybersecurity
… Richard Lawler May 13 AI cybersecurity updates for MDASH, Mythos, and GPT-5.5. On Wednesday, the AISI, which evaluates AI models for the British government, said both Anthropic’s Claude Mythos Preview and OpenAI’s GPT-5.5 showed progress well above previous trends on cybersecurity testing. …