{"id":2383,"date":"2026-06-27T17:08:42","date_gmt":"2026-06-27T17:08:42","guid":{"rendered":"https:\/\/crosscountrymovingteams.com\/?p=2383"},"modified":"2026-06-27T17:08:42","modified_gmt":"2026-06-27T17:08:42","slug":"anthropics-mythos-5-ai-model-cleared-by-u-s-for-wider-use","status":"publish","type":"post","link":"https:\/\/crosscountrymovingteams.com\/?p=2383","title":{"rendered":"Anthropic\u2019s Mythos 5 AI model cleared by U.S. for wider use"},"content":{"rendered":"
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\u201cAnthropic has worked with the US government to address risks associated with the Covered Models,\u201d Commerce Secretary Howard Lutnick wrote to the company\u2019s chief compute officer in a letter seen by Bloomberg News. \u201cThese efforts have yielded significant progress,\u201d he wrote, saying that the model could be released to \u201ccertain trusted partners.\u201d<\/p>\n

Read more The 2 billion-print, $2-pack last hurrah for a World Cup legend: the Panini sticker album\u2019s last ride<\/a><\/p>\n

The clearance eases a confrontation that erupted two weeks ago when the government abruptly barred Anthropic from giving foreign nationals access to Mythos 5 and a related model, Fable 5, over fears that security guardrails could be circumvented. The\u00a0order\u00a0prompted the company to disable all global access to the two advanced systems and touched off intensive talks toward a resolution.<\/p>\n

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\u201cIn just two weeks, we have worked diligently to ensure America remains the global leader in AI while safeguarding our security,\u201d said Commerce Department spokesman Benno Kass.<\/p>\n

The Commerce letter dated Friday doesn\u2019t mention any change to its restrictions on use of the Fable 5 model.\u00a0<\/p>\n

\u201cWe received notice from the US government that Mythos 5, our strongest cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers,\u201d Anthropic said in a statement. \u201cWe are working to provision the approved set of providers and restore their access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again.\u201d<\/p>\n

It\u2019s unclear what steps Anthropic had to take to satisfy the government\u2019s concerns that it was possible to \u201cjailbreak,\u201d or bypass guardrails on, the advanced models. The companyexpects conversations to continue over the weekend with the government as it aims to bring back access to Fable 5 soon, said a person familiar with the matter, who asked not to be named because the discussions are private.\u00a0<\/p>\n

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The company is also working with the government to come up with a policy framework to deal with such situations in the future, the person said.<\/p>\n

Anthropic had objected to the government\u2019s decision to impose export controls in a blog post announcing that the two systems had been disabled. \u201cIf this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers.\u201d<\/p>\n

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In that post, Anthropic cautioned that it believes that \u201cperfect jailbreak resistance is not currently possible for any model provider.\u201d<\/p>\n

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The government\u2019s decision to restrict the availability of Anthropic\u2019s models also reverberated across the AI industry, particularly at rival startup OpenAI, which limited the release of a capable new AI model \u2014 GPT-5.6 \u2014 under pressure from the Trump administration. OpenAI\u00a0said\u00a0Friday it would roll out a preview version to select partners who were approved by the US government, before making it more available in the coming weeks, following a request from the administration.<\/p>\n

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Wider feud<\/h3>\n

The showdown over Mythos 5 and Fable 5 marked the latest clash between Anthropic and the Trump administration. Anthropic has been embroiled for months in a feud with the Pentagon over extra guardrails the San Francisco-based company sought for military use of its AI tools. After contract talks broke down, the Defense Department declared the firm a\u00a0supply-chain risk\u00a0in March and is moving to seek other AI providers for the armed forces.<\/p>\n

Privately held Anthropic, which has long positioned itself as a more responsible AI developer than its rivals, first shared its Mythos model in April with a\u00a0limited group\u00a0of companies and institutions, warning that its ability to find cybersecurity vulnerabilities made it too risky to distribute more widely.<\/p>\n

Earlier this month, the company\u00a0released\u00a0Fable 5 as the first public-facing version of its Mythos-class model, but with guardrails aimed at containing the full range of its cyber capabilities. Fable 5 is prevented from responding to certain types of queries, including those related to cybersecurity and biology. In those cases, Anthropic has said its Claude chatbot will route responses through a different model, called Opus 4.8.<\/p>\n

By continuing to restrict the Fable 5 model, the federal government indicated that it remains wary of making the technology behind these models broadly available, even with limits that Anthropic added before generally releasing it.<\/p>\n

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Mythos 5, which is a version of Fable 5 without some of the safeguards, was scheduled to be released to a more limited group of institutions for cybersecurity purposes, an invite-only initiative called Project Glasswing. As of earlier this month, about 200 firms had access to Mythos through the program, including Apple Inc., Alphabet Inc.\u2019s Google, Cisco Systems Inc., Nvidia Corp. and Microsoft Corp.<\/p>\n

Industry impact<\/h3>\n

The order to bar Anthropic\u2019s latest models represented the most significant intervention by the US government to date into an AI venture\u2019s operations, and highlighted emerging concerns surrounding the security of cutting-edge models. It posed a new challenge to Anthropic weeks after the company filed confidentially for an initial public offering, with its latest valuation topping $900 billion.<\/p>\n

Read More:\u00a0Anthropic Files Confidentially for IPO in Race With OpenAI<\/p>\n

The recent negotiations involved senior executives from Anthropic including co-founder Tom Brown, who met with Lutnick and other senior administration officials in recent days, people familiar with the talks told Bloomberg. US officials told Anthropic that the restrictions would be lifted once the government\u2019s security concerns have been addressed, said the people, who spoke on condition of anonymity because the discussions weren\u2019t public.<\/p>\n

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In the talks with Commerce over Fable 5 and Mythos 5, Anthropic Chief Executive Officer Dario Amodei took a hands-off role, helping to reduce friction between the two sides, according to the people.<\/p>\n

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The Commerce Department letter dated Friday doesn\u2019t mention any change to its restrictions on use of the Fable 5 model.\u00a0<\/p>\n","protected":false},"author":1,"featured_media":2382,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[75],"tags":[],"class_list":["post-2383","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anthropic"],"yoast_head":"\nAnthropic\u2019s Mythos 5 AI model cleared by U.S. for wider use - Cross Country Moving Team<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/crosscountrymovingteams.com\/?p=2383\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Anthropic\u2019s Mythos 5 AI model cleared by U.S. for wider use - 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