On Monday, Anthropic released Claude Sonnet 4.5, a new AI language model the company calls its most capable model to date, with improved coding and computer use capabilities. The company also revealed Claude Code 2.0 , a command line AI agent for developers, and the Claude Agent SDK , which is a tool developers can use to build their own AI coding agents. Anthropic says it has witnessed Sonnet 4.5 working continuously on the same project for more than 30 hours on complex, multi step tasks, th
