{"id":268647,"date":"2026-06-09T13:00:00","date_gmt":"2026-06-09T17:00:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/06\/09\/anthropic-offers-mythos-upgrade-for-cyber-partners-and-a-safe-version-for-the-rest-of-you\/"},"modified":"2026-06-09T15:50:21","modified_gmt":"2026-06-09T19:50:21","slug":"anthropic-offers-mythos-upgrade-for-cyber-partners-and-a-safe-version-for-the-rest-of-you","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/06\/09\/anthropic-offers-mythos-upgrade-for-cyber-partners-and-a-safe-version-for-the-rest-of-you\/","title":{"rendered":"Anthropic Offers Mythos Upgrade for Cyber Partners and a \u2018Safe\u2019 Version for the Rest of You"},"content":{"rendered":"

Anthropic Offers Mythos Upgrade for Cyber Partners and a \u2018Safe\u2019 Version for the Rest of You<\/a><\/p>\n

https:\/\/www.wired.com\/story\/anthropic-releases-claude-fable-5-mythos-5\/<\/a><\/p>\n

Publish Date: 2026-06-09 13:00:00<\/a><\/p>\n

Source Domain: www.wired.com<\/a><\/p>\n

Anthropic released two new AI models called Claude Fable 5 and Claude Mythos 5 on Tuesday, which the company says have greater capabilities than the Mythos Preview model it released in April to a limited set of tech industry partners. Anthropic has said the initial, limited release stemmed from concerns that the model\u2019s capabilities could be exploited by bad actors to develop hacking tools that could catch defenders off guard.<\/p>\n

Anthropic is currently only releasing Claude Mythos 5 to a limited set of industry partners, many of which received access to Mythos Preview, and the company says it is collaborating with the US government on the rollout.<\/p>\n

Claude Fable 5, which is being publicly released, uses the same underlying model as Mythos 5, but will have \u201cguardrails\u201d in place at launch, the company said Tuesday, that will block the model from answering many user questions related to cybersecurity, biology, and chemistry. These requests will instead be rerouted to an older AI model, Claude Opus 4.8. If Anthropic suspects a user is trying to conduct distillation\u2014training a smaller AI model off a larger AI model\u2019s responses\u2014on Claude Fable 5, those requests will also be rerouted to Claude Opus 4.8, the company says.<\/p>\n

In an interview with WIRED, Anthropic\u2019s head of product management, Diane Penn, says that the company has been grappling with the question of how to handle Mythos\u2019 software vulnerability-discovery abilities and other advanced capabilities since before its April release, but that testing and user input since then helped to hone the strategy.<\/p>\n

\u201cWe’re trying to make improvements in a way that’s beneficial, even if we don’t have the perfect [solution] for every use case to start,\u201d Penn says. \u201cOut of all the different approaches, this emerged as the most viable and the best one. We just ended up feeling like this was the best product choice for users to get the maximum value out of Fable 5.\u201d<\/p>\n

For now, Penn says that the protective mechanism is…<\/p>\n

Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Anthropic Offers Mythos Upgrade for Cyber Partners and a \u2018Safe\u2019 Version for the Rest of…<\/p>\n","protected":false},"author":1,"featured_media":268648,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/media.wired.com\/photos\/6a270618e083d018dff70e49\/191:100\/w_1280,c_limit\/Anthropic-Dangerous-AI-Business-2261854833.jpg","fifu_image_alt":"","footnotes":""},"categories":[15],"tags":[26,24,27],"class_list":["post-268647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cybersecurity","tag-ai","tag-cybersecurity","tag-vulnerability"],"_links":{"self":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/268647"}],"collection":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/comments?post=268647"}],"version-history":[{"count":1,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/268647\/revisions"}],"predecessor-version":[{"id":268650,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/268647\/revisions\/268650"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media\/268648"}],"wp:attachment":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media?parent=268647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/categories?post=268647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/tags?post=268647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}