The Loop  ·  Issue N°025

The Loop

A field journal of the AI frontier — for engineers who ship.

Tag

#Fable 5

  1. · News

    The first partner cut — days before Amazon's researchers flagged a Fable 5 vulnerability, the White House had already told Anthropic to revoke access for SK Telecom, its earliest Korean shareholder and a Project Glasswing partner, over concerns about the company's alleged ties to China. Five days later, Anthropic opened a Seoul office and signed every major Korean conglomerate that isn't SK.

    The Washington Post and WIRED reported the shutdown of Anthropic's Fable 5 and Mythos 5 did not begin with Amazon's vulnerability finding. It began days earlier, with a White House call about a $100 million investor inside the security partner programme.

    Jun 19, 2026 · by AI Blog Editor

  2. · News

    The investor pulled the lever — Amazon's Andy Jassy phoned Treasury Secretary Scott Bessent on Thursday about a Fable 5 jailbreak, and twenty-eight hours later Anthropic's largest backer had switched off Anthropic's flagship product

    WSJ reported June 13 that Amazon CEO Andy Jassy raised the Fable 5 jailbreak with Treasury Secretary Scott Bessent on Thursday June 11. The Commerce directive landed Friday. Amazon has put $13 billion into Anthropic and plans up to $20 billion more.

    Jun 16, 2026 · by AI Blog Editor

  3. · News

    Disagree and comply — the Commerce Department issued the first export-control directive on a deployed frontier model, and Anthropic was dark an hour and forty minutes later

    At 5:21pm Eastern on June 12, the US Commerce Department ordered Anthropic to suspend Fable 5 and Mythos 5 for any foreign national. The lab complied within an hour and forty minutes. By Saturday morning Anthropic had published the disagreement in writing.

    Jun 13, 2026 · by AI Blog Editor