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Anthropic pulls Claude Mythos 5 and Claude Fable 5 following US government directive Marcus Mendes | Jun 12 2026 - 6:30 pm PT | Jun 12 2026 - 6:30 pm PT Anthropic confirmed tonight that it has disabled access to Claude Fable 5 and Claude Mythos 5 to all customers, following an export control direct… …
… Meanwhile, Anthropic shared last week as part of its Claude Opus 4.8 model introduction that it plans to release “Mythos-class models” to all customers soon. “Models of this capability level require stronger cyber safeguards before they can be generally released, ” Anthropic shared last week. “We’r…
Anthropic cleared to release Claude Mythos 5 to over 100 US institutions U Marcus Mendes | Jun 26 2026 - 4:03 pm PT | Jun 26 2026 - 4:03 pm PT Following an export control directive two weeks ago that forced Anthropic to disable access to Claude Fable 5 and Claude Mythos 5 for all customers, the com… …
… Beyond Claude Fable 5, Anthropic also details Claude Mythos 5, which is basically Fable 5 without a lot of the safeguards. Mythos 5 is only available to a “small group of cyberdefenders and infrastructure providers,” per Anthropic. This includes those with Claude Mythos Preview access. …
… Availability “We do not plan to make Claude Mythos Preview generally available,” Anthropic says, “but our eventual goal is to enable our users to safely deploy Mythos-class models at scale—for cybersecurity purposes, but also for the myriad other benefits that such highly capable models will bring.… …
… Update July 1, 8:00 a.m.: In a post in the company’s Newsroom, Anthropic confirmed that Fable 5 will return today to users globally “on the Claude Platform, Claude.ai, Claude Code, and Claude Cowork,” adding that for Pro, Max, Team, and select Enterprise plans, Fable 5 will be included for up to 50… …
… Claude Opus 4.8 arrived at the end of May. Claude Fable 5 followed a few days later before being pulled . Mythos 5 has partially been restored to select customers. Claude Sonnet 5 arrives four months after the previous Sonnet 4.6 release. You can learn more about Claude Sonnet 5 here . …
… Companies like Notion, Asana, and Sentry have already used Managed Agents to create new solutions with Claude. Now the new tool is available on the Claude Platform for all builders. Both developments follow the introduction of Claude Mythos Preview and Project Glasswing. …
… The new model is called Claude Fable. Expand Expanding Close Anthropic expands Glasswing as it promises public Claude Mythos-class model releases Zac Hall Jun 2 2026 - 7:01 am PT Anthropic unveiled its Claude Mythos AI model in April, only sharing access with select partners like Apple. …