{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreihjm3qelignjb67qtpvs7gonhaw6cqufe7nmcaant3phizfu6sgf4",
    "uri": "at://did:plc:dz7fbvkxedbwlm4sroohfpee/app.bsky.feed.post/3mo5yu7dpy6b2"
  },
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreieq56mfjz5jmcqxtncqdwgwobe7ivybrsy7n6t36trv6fasslmtpy"
    },
    "mimeType": "image/jpeg",
    "size": 15357
  },
  "description": "What's new? Anthropic suspended Fable 5 and Mythos 5 following a government export control directive; a bypass method was uncovered during safeguards testing;",
  "path": "/anthropic-suspends-fable-5-and-mythos-5-after-export-order/",
  "publishedAt": "2026-06-13T10:03:22.000Z",
  "site": "https://www.testingcatalog.com",
  "tags": [
    "https://t.co/oRHu89ftpj",
    "pic.twitter.com/axdW0h5dQG",
    "June 13, 2026",
    "pic.twitter.com/8zhOQb0dPN",
    "https://t.co/cm5VhCCBx3",
    "https://t.co/oF0Ae0vM33",
    "pic.twitter.com/UqJ0crQnyw",
    "@BrianRoemmele",
    "https://t.co/R3UALmb3X5",
    "https://t.co/kCQpq93D3r",
    "https://t.co/I6dUYeeOuG",
    "Source",
    "@testingcatalog",
    "@koltregaskes",
    "@AndrewCurran_",
    "@kimmonismus",
    "@Scobleizer",
    "@svembu",
    "@AlexFinn"
  ],
  "textContent": "Anthropic has abruptly suspended access to its advanced language models, Fable 5 and Mythos 5, following a government-issued export control directive. This suspension affects all users, both domestic and international, including Anthropic’s own foreign national employees. The directive follows the identification of a method to bypass the models’ safeguards, though the vulnerabilities discovered were limited and also present in other large language models.\n\n> BREAKING 🔥: US government directed Anthropic to ban access to Claude Fable 5 and Claude Mythos 5 to non US citizens and organisations.\n>\n> Presumably, as these models are still vulnerable to jailbreaks. According to Anthropic, no universal jailbreak has been found so far, only… https://t.co/oRHu89ftpj pic.twitter.com/axdW0h5dQG\n>\n> — 🚨 AI News | TestingCatalog (@testingcatalog) June 13, 2026\n\nFable 5 and Mythos 5 had previously undergone extensive testing in collaboration with the US government, the UK AISI, and various third-party organizations, with a focus on mitigating cybersecurity risks through rigorous safeguards and monitoring policies. Compared to previous models, Fable 5 introduced a defense-in-depth approach and stricter data retention requirements, aiming to reduce the likelihood and impact of jailbreaks.\n\n**AI Community reactions & comments**\n\n> The US government forced Anthropic to shut down Fable 5 and Mythos 5 yesterday - an export control directive citing national security and a jailbreak. Access was cut for everyone, including internal, behind-closed-doors use.\n>\n> The “evidence” was verbal only - no specifics, no… pic.twitter.com/8zhOQb0dPN\n>\n> — Kol Tregaskes (@koltregaskes) June 13, 2026\n\n> According to Grok, Andrej Karpathy is an EB-1 extraordinary ability green card recipient, not a US citizen. Thus under these new restrictions he is not permitted to use, or work on, Mythos 5 or Fable 5 as of 5:21pm tonight. https://t.co/cm5VhCCBx3\n>\n> — Andrew Curran (@AndrewCurran_) June 13, 2026\n\n> US government directive to suspend access to Fable 5 and Mythos 5. To explain in detail why this is a precedent. My personal assessment:\n>\n> - Firstly, because it's the first time a government has directly intervened in the release of a model. The reason given is that another… https://t.co/oF0Ae0vM33 pic.twitter.com/UqJ0crQnyw\n>\n> — Chubby♨️ (@kimmonismus) June 13, 2026\n\n> Unprecedented.@BrianRoemmele warned everyone for the past two years that the government would take away our AI.\n>\n> That day just arrived.\n>\n> Was talking with an entrepreneur in San Francisco who was running Fable to build software and just turned it off while it was building.… https://t.co/R3UALmb3X5\n>\n> — Robert Scoble (@Scobleizer) June 13, 2026\n\n> This is big: all access to Mythos and Fable AI models disabled for everyone outside America.\n>\n> First thoughts:\n>\n> 1. Technology is the ultimate weapon. National sovereignty, national security, all of it is now about technology.\n>\n> 2. Globalization is dead and Bharat must find her… https://t.co/kCQpq93D3r\n>\n> — Sridhar Vembu (@svembu) June 13, 2026\n\n> This is your wakeup call.\n>\n> Anthropic just took down Fable 5. It's over.\n>\n> Here's the thing tho: no company or government will EVER be able to take away your local models.\n>\n> There are Opus level models you can run right now on your home GPUs, and nobody can ever stop you from using… https://t.co/I6dUYeeOuG\n>\n> — Alex Finn (@AlexFinn) June 13, 2026\n\nAnthropic, an AI company known for prioritizing safety and transparency in its model development, had released Fable 5 and Mythos 5 to a broad customer base. The models were positioned as among the most secure in the industry, with safeguards considered more restrictive than those found in many competing offerings. The company maintains that the current vulnerabilities do not warrant such a sweeping suspension and has voiced concerns about the broader implications for the AI sector if similar standards are applied universally.\n\nAnthropic is currently working with authorities to clarify the situation and to restore service to its customers as soon as possible.\n\nSource",
  "title": "Anthropic suspends Fable 5 and Mythos 5, Community reactions",
  "updatedAt": "2026-06-13T10:10:20.050Z"
}