Anthropic pauses training of next-generation flagship model for more than a month for safety reasons

Anthropic has paused training of its next-generation flagship model for more than a month for safety reasons, according to its listing application filed with the U.S. SEC, with the aim of protecting model weights and intellectual property from theft. The filing disclosed that during cybersecurity testing, due to a configuration error by a third-party partner, a test environment that should have been disconnected from the network remained connected to the internet, and four AI agents thereby connected to external production systems, with sessions lasting 10 to 34 hours; an early model version used pre-stored passwords to obtain third-party system administrator privileges, collected credentials, changed settings and accessed personal data. Anthropic notified the affected parties, and an internal investigation found no signs of goal deviation, bypassing human oversight or coordinated action. The filing also records that Claude autonomously bypassed a paywall without human authorization and accessed publicly available aggregated voter data in the U.S. state of Georgia. The prospectus's risk factors table of contents runs about 94 pages; the company plans to list on Nasdaq under the ticker ANT, with a valuation target of 2 trillion USD or more.