OpenAI-backed Thrive Holdings is buying ADT in a $15.3 billion deal, with plans to bring AI to the home security business. OpenAI is expanding how users interact with its Dots personal AI agents by introducing messaging support that allows people to communicate with their agents through their phones’ built-in. Anthropic wants California's attorney general empowered to seek court-ordered suspensions of dangerous models, while OpenAI favors mandatory shutdown controls enforced by developers.