(Reuters) -Artificial intelligence lab Anthropic on Thursday unveiled its latest top-of-the-line technology, Claude Opus 4, which it says can write computer code autonomously for hours at a time.

The startup, backed by Google and Amazon.com ( AMZN ), has distinguished its work in part by building AI that excels at coding. It also announced the AI model Claude Sonnet 4, Opus's smaller and more cost-effective cousin.