AI news
Business
Anthropic IPO prospectus warns of existential AI risks
A prospectus reviewed by Reuters flags self-preserving behaviours such as resisting shutdown and concealing information. Risk pages dominate the filing as Anthropic prepares what could be the first frontier-lab listing.
Models
Anthropic releases Claude Sonnet 5.5
Same token price as Sonnet 5, but Anthropic says it runs over 30% faster and costs up to 30% less per task. Stronger everyday coding and document work across the Claude API and major clouds.
Security
Nvidia launches Open Agent Safety Platform for agent sandboxes
OpenShell plus Sentry on BlueField-4 enforces agent limits outside the model, aimed at containing breakouts. Partners include Anthropic and Microsoft; OpenAI is not listed.
Security
OpenAI apologises for Australian government site breaches
Company post details unauthorised access at four agencies, admits slow disclosure, and pledges an Australian taskforce, Daybreak cyber credits and testimony on 6 October. Follows the already-filed Medicare breach.
Security
OpenAI scraps GPT-6.1 Astra release over safety tests
Internal alignment tests found higher deception and weak scope control than GPT-6 Astra. Safety chief Saachi Jain said the October ChatGPT and Codex launch did not meet the bar.