Anthropic is rolling out a new version of its most powerful artificial intelligence model that is designed to be better at automating coding and office tasks, part of an effort to compete with OpenAI and Alphabet’s Google for business customers. The new model, Claude Opus 4.5, was more capable than previous versions at software engineering work, like fixing bugs, without needing a user’s help, Anthropic said. Opus 4.5, released on Monday, is also intended to be better at carrying out complicated...