Google and Amazon backed startup launches new AI that can write code continuously for hours

Artificial intelligence lab Anthropic unveiled its latest top-of-the-line technology called Claude Opus 4 on Thursday, which it says can write computer code autonomously for much longer than its prior systems.

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