<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0">
    <channel>
        <title>Mythos Preview Daily</title>
        <link>https://mythospreview.net</link>
        <description>Mythos Preview Daily is an independent news and commentary site tracking Anthropic's Claude Mythos Preview model, Project Glasswing, benchmarks, and related AI developments.</description>
        <lastBuildDate>Sat, 25 Apr 2026 07:03:35 GMT</lastBuildDate>
        <docs>https://validator.w3.org/feed/docs/rss2.html</docs>
        <generator>https://github.com/jpmonette/feed</generator>
        <language>en</language>
        <copyright>© 2026 Mythos Preview Daily</copyright>
        <item>
            <title><![CDATA[Unauthorized Access to Mythos Preview: What We Know So Far]]></title>
            <link>https://mythospreview.net/news/unauthorized-access-investigation</link>
            <guid isPermaLink="false">https://mythospreview.net/news/unauthorized-access-investigation</guid>
            <pubDate>Wed, 22 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[Reports indicate unauthorized users accessed Claude Mythos Preview through a third-party contractor. Anthropic confirms investigation is underway.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-capybara-leak.png" length="0" type="image/png"/>
        </item>
        <item>
            <title><![CDATA[NSA Uses Mythos Preview as Pentagon Labels Anthropic a 'Supply-Chain Risk']]></title>
            <link>https://mythospreview.net/news/nsa-pentagon-mythos-controversy</link>
            <guid isPermaLink="false">https://mythospreview.net/news/nsa-pentagon-mythos-controversy</guid>
            <pubDate>Wed, 15 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[The U.S. government's contradictory relationship with Claude Mythos Preview exposes deep tensions around AI-powered cybersecurity.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-nsa-pentagon-ai.png" length="0" type="image/png"/>
        </item>
        <item>
            <title><![CDATA[Claude Mythos Preview System Card: What It Reveals About the Model's Capabilities]]></title>
            <link>https://mythospreview.net/news/mythos-system-card-deep-dive</link>
            <guid isPermaLink="false">https://mythospreview.net/news/mythos-system-card-deep-dive</guid>
            <pubDate>Fri, 10 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[An in-depth analysis of the Mythos Preview system card — from zero-day discovery at scale to autonomous exploit development.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-system-card-deep-dive.png" length="0" type="image/png"/>
        </item>
        <item>
            <title><![CDATA[Claude Mythos Preview Benchmark Breakdown: How It Compares to GPT-5 and Opus 4.6]]></title>
            <link>https://mythospreview.net/news/mythos-preview-benchmark-breakdown</link>
            <guid isPermaLink="false">https://mythospreview.net/news/mythos-preview-benchmark-breakdown</guid>
            <pubDate>Thu, 09 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[A detailed breakdown of Claude Mythos Preview's performance across SWE-bench, Cybench, USAMO 2026, and other key benchmarks.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-benchmarks-breakdown.png" length="0" type="image/png"/>
        </item>
        <item>
            <title><![CDATA[Project Glasswing Explained: Anthropic's Controlled AI Security Initiative]]></title>
            <link>https://mythospreview.net/news/project-glasswing-explained</link>
            <guid isPermaLink="false">https://mythospreview.net/news/project-glasswing-explained</guid>
            <pubDate>Wed, 08 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[A detailed look at Project Glasswing — who the 12 founding partners are, how access works, and what it means for AI-driven cybersecurity.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-project-glasswing.png" length="0" type="image/png"/>
        </item>
        <item>
            <title><![CDATA[Anthropic Announces Claude Mythos Preview — Its Most Powerful AI Model Yet]]></title>
            <link>https://mythospreview.net/news/claude-mythos-preview-announcement</link>
            <guid isPermaLink="false">https://mythospreview.net/news/claude-mythos-preview-announcement</guid>
            <pubDate>Tue, 07 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[Anthropic officially unveils Claude Mythos Preview and Project Glasswing, marking a new chapter in AI capability and controlled deployment.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-mythos-announcement.png" length="0" type="image/png"/>
        </item>
        <item>
            <title><![CDATA[The Capybara Leak: How Internal Anthropic Documents Exposed Mythos Preview]]></title>
            <link>https://mythospreview.net/news/capybara-leak-what-we-know</link>
            <guid isPermaLink="false">https://mythospreview.net/news/capybara-leak-what-we-know</guid>
            <pubDate>Sun, 05 Apr 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[A CMS misconfiguration in March 2026 exposed 3,000 internal Anthropic documents revealing the existence of Claude Mythos Preview.]]></description>
            <author>Mythos Preview Daily Staff</author>
            <enclosure url="https://mythospreview.net/images/hero-capybara-leak.png" length="0" type="image/png"/>
        </item>
    </channel>
</rss>