On September 29, 2025, Anthropic has released Claude Sonnet 4.5, its latest frontier AI model, positioning it as the most capable and most aligned model the company has developed to date. The launch builds on the foundation of previous Claude Sonnet and Opus releases, with a focus on sustained autonomous performance, coding ability, tool use, and […] The post Anthropic Launches Claude Sonnet 4.5: Frontier AI Built for Code & Complex Tasks appeared first on Fello AI.
