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So this simply occurred. Fortune journalist Bea Nolan found that Anthropic left practically 3,000 unpublished inside paperwork — draft weblog posts, PDFs, pictures — sitting in an unsecured, publicly accessible information cache on their very own web site. Anthropic confirmed it was human error of their CMS configuration. They've since pulled the information. What was in these docs? A draft announcement put up for Claude Mythos (additionally internally referred to as Capybara) — a mannequin they hadn't introduced but. What’s Mythos? Anthropic confirmed its existence to Fortune after the leak. Right here's what they stated: The leaked draft goes additional — calling it "by far probably the most highly effective AI mannequin we've ever developed." It's not only a new Claude mannequin. It's a model new tier above Opus, codenamed Capybara. Present lineup is Opus → Sonnet → Haiku. Mythos sits above all of them. The benchmarks The draft says Mythos scores "dramatically increased" than Claude Opus 4.6 (their present greatest public mannequin) on:
They referred to as it a "step change" — not an incremental improve. A qualitative leap. ⚠️ The half that ought to concern everybody Anthropic's personal leaked draft features a warning that Mythos is "presently far forward of another AI mannequin in cyber capabilities" and will "exploit vulnerabilities in ways in which far outpace the efforts of defenders." Due to this, they're not doing a standard public launch. Early entry is restricted particularly to organizations engaged on cybersecurity protection — to allow them to harden their methods earlier than the mannequin turns into extra extensively obtainable. For context: in November 2025, Chinese language state-sponsored hackers had already used Claude Code (a a lot weaker mannequin) to run a totally automated espionage marketing campaign concentrating on round 30 organizations together with tech corporations, banks, and authorities businesses. Claude Code executed 80–90% of the operation autonomously. Mythos is orders of magnitude extra succesful in cyber than that. Present standing
The timing is… fascinating On the very same day because the leak, Bloomberg and The Data reported that Anthropic is planning an IPO as early as October 2026, concentrating on a valuation of $60 billion+. Unintended leak that reveals your "strongest AI ever" proper earlier than an IPO roadshow. Anthropic says it was human error. Make of that what you’ll. Additionally occurring the identical day A federal choose in San Francisco blocked the Trump administration from labeling Anthropic a "provide chain threat" and slicing off its Pentagon contracts. The dispute began when Anthropic CEO Dario Amodei refused to let Claude be used for autonomous weapons or home surveillance. The choose referred to as the federal government's transfer "Orwellian" and "basic unlawful First Modification retaliation." Wild week for Anthropic. TL;DR: Anthropic by chance leaked particulars of their strongest mannequin ever (Claude Mythos / Capybara). It's a brand new tier above Opus, dramatically higher at coding, reasoning, and particularly cybersecurity. Anthropic themselves warn it could possibly be dangerously good at cyberattacks — so that they're being extraordinarily cautious with who will get entry. No public launch date. Additionally they could IPO at $60B this yr and a choose simply saved them from a Trump ban. submitted by /u/geekowlhill to u/geekowlhill |