Anthropic releases Mythos A.I. to public after private rollout exposed cybersecurity concerns
Anthropic releases Mythos A.I. to public after private rollout exposed cybersecurity concerns
https://www.theglobeandmail.com/business/article-anthropic-mythos-ai-public-release-cybersecurity/
Publish Date: 2026-06-10 08:37:00
Source Domain: www.theglobeandmail.com
Using an unordered list, summarize the following article with between 4 and 8 key points. Open this photo in gallery:Anthropic announced the release of its new Claude Fable 5 model on Tuesday.NICOLAS TUCAT/AFP/Getty ImagesAnthropic is rolling out a public version of its Mythos A.I. model, but with guardrails barring its use in risky areas such as cybersecurity, after a preview earlier this year sent shock waves globally with its ability to find software flaws. The new Claude Fable 5 is the most powerful model Anthropic has ever made for wider use, the startup said on Tuesday, touting its performance in software engineering and analytics.Minister Solomon confirms Canada now part of Anthropic’s Mythos AI preview programThe company said it had done extensive testing to ensure that users could not manipulate the new model to bypass its guidelines and perform restricted actions.“Let’s say I’m a college student asking the model like help me find cyber vulnerabilities on X package or code. The model would refuse and Fable 5 will fall back to Opus 4.8 for a response,” Dianne Penn, Anthropic’s head of product management, research and labs, said.Anthropic confidentially files to go public in U.S.Fable 5 will be a more expensive model, but it accomplishes tasks with lower token usage, bringing the overall cost per task down, according to early customer feedback, Penn said.Anthropic also said users who had access to the preview version of Claude Mythos, the version without guardrails, would be able to upgrade to the new Claude Mythos 5, which has the same underlying model as Fable 5, but with safeguards lifted in some areas, according to a release.Anthropic calls for global slowdown in AI race to weigh societal implicationsAnthropic has so far limited access to Mythos 5 to a group of about 200 organizations including the U.S. government under the Glasswing program, after announcing in April that Mythos had uncovered thousands of software vulnerabilities.Offering its capabilities more widely may allow the US$965 billion company to extend the momentum that has powered its valuation above rival OpenAI just as the two startups at the centre of the A.I. industry race to go public.Anthropic expands Mythos access to about 200 partners across 15 countriesThe company said it planned to expand access over time through a more “systematic trusted-access program.”Pricing on both models is US$10 per million input tokens and US$50 per million output tokens, the company said.
