According to the Financial Times, Anthropic's planned funding round is taking shape. The round aims to raise up to $50 billion, which would value the company at roughly $900 billion.

Anthropic's Natural Language Autoencoders make Claude Opus 4.6's internal activations readable as plain text. Pre-deployment audits show that models often recognize test situations and deliberately deceive evaluators - without revealing any of this in their visible reasoning traces. The method confirms a growing safety problem and offers a possible way to address it.

OpenAI is releasing GPT-5.5-Cyber, a model variant that rejects far fewer security requests and even actively executes exploits against test servers. Access is limited to verified defenders of critical infrastructure, including partners like Cisco, CrowdStrike, and Cloudflare. The model competes directly with Anthropic's Mythos Preview.

Anthropic's Claude Mythos Preview uncovered 271 previously unknown security vulnerabilities in Firefox 150, including bugs up to 20 years old. Mozilla describes an agentic pipeline where the AI builds and runs its own test cases to filter out false positives. Going forward, every new piece of code is to be automatically checked before commit.

SoftBank has reduced a loan secured by OpenAI shares from 10 to around 6 billion dollars. Lenders are apparently reluctant to reliably assess the value of an unlisted company like OpenAI.