Tag · 10 stories
Every story tagged Claude Mythos on AI Chat Daily.
Internal Microsoft meeting reveals Project Glasswing engineers in a race against a June 1 deadline when adversaries catch up.
After the White House forced Anthropic to cut foreign access to its top models on June 13, the UK, France, and Canada are using it to argue for homegrown AI.
Alex Stamos, Katie Moussouris, and Jon Callas signed an open letter calling the White House order 'dangerous' for defenders.
Export restrictions on Anthropic's most powerful model were partly driven by suspected unauthorized access, according to a Semafor report.
Fable's keyword-triggered guardrails reject benign security work, falling back to Claude Opus 4.8 whenever 'cybersecurity' surfaces in a prompt.
Wharton's Ethan Mollick says the new Mythos-class model executed multi-page specs autonomously for up to a dozen hours.
The publicly available Mythos-class model routes sensitive prompts back to Opus 4.8 and costs 67-100% more than GPT-5.5.
The lab once said Mythos was too dangerous to ship. New safeguards route 5% of risky prompts back to Opus 4.8.
Project Glasswing now covers power, water, healthcare, and hardware codebases — a day after Anthropic filed confidentially for an IPO.
Daybreak combines OpenAI's new cyber-tuned models with the Codex Security agent to find and patch vulnerabilities before attackers do.
The tightly edited AI news email engineers, founders, and investors actually open. One email. Every weekday. Five minutes to finish.
The briefing read inside teams at
