Anthropic Launches Claude Sonnet 4.5, an Autonomous AI Model Excelling in Coding
Originally Published 3 months ago — by Anthropic

Claude Sonnet 4.5 is a state-of-the-art AI coding model that significantly improves reasoning, math, and computer use capabilities, with extensive safety and alignment enhancements, new features like checkpoints and a SDK for building AI agents, and broad applications across software development, legal, financial, and creative tasks.