Anthropic has just announced Claude Sonnet 4.5 and is calling it the “best in the world” for coding, real-world agent and complex computer use. In internal testing, Sonnet 4.5 ran autonomously for more than 30 hours straight while maintaining performance and focus. This is a giant leap from the seven hours possible with Claude Opus 4 just months ago.
With nearly a full work week of nonstop AI effort, this new model underscores the possibilities of where the future of work and personal productivity might be headed.
