Anthropic tightens access amid leaks
Anthropic is testing what it calls its most capable model but is refusing a public release and has tightened user caps as demand outpaces safe scaling—reports also show a leaked model nickname and an IPO rumor for as soon as October. This combination of cautious gating, usage limits, and market speculation highlights how safety, infrastructure, and financing are colliding at fast-growing AI startups. (x.com) (x.com) (businessinsider.com) (timesofindia.indiatimes.com)
Security researchers Roy Paz (LayerX) and Alexandre Pauwels (University of Cambridge) found nearly 3,000 unpublished Anthropic assets in a publicly accessible content‑management data cache, and Fortune reviewed the exposed materials before Anthropic removed public search access. (tech.yahoo.com) Draft blog copy and internal files in the cache identify the unreleased system as "Claude Mythos" and reference an internal product tier called "Capybara" that the company positions above its existing Opus models, with the documents describing Mythos as a "step change" in capability. (tech.yahoo.com) Leaked drafts explicitly flag Mythos for "unprecedented cybersecurity risks," and Anthropic has said the model is being trialed with a small group of early‑access customers rather than offered publicly while it studies release strategy. (tech.yahoo.com) On the product side, Anthropic ran a temporary promotion that doubled off‑peak five‑hour usage windows from March 13–27, 2026, while continuing to enforce peak‑hour throttles and the weekly/rolling limits codified in its Usage Policy updates that took effect Sept. 15, 2025. (support.claude.com) Commercial signals show demand pressure: TechCrunch reported Anthropic’s paid Claude subscriptions have more than doubled year‑to‑date, and public estimates for consumer users range from about 18 million to 30 million, a scale that strains quota‑based rate limits. (techcrunch.com) Separately, Bloomberg says Anthropic is in early conversations with Goldman Sachs, JPMorgan and Morgan Stanley about a potential IPO as soon as October 2026 that could raise upwards of $60 billion, a timetable that would place it in direct competition with OpenAI for a 2026 public listing. (bloomberg.com)
