Anthropic co-founder and CEO Dario Amodei speaks on an artificial intelligence panel during Inbound 2025 Powered by HubSpot at Moscone Center on in San Francisco, Sept. 4, 2025.
Anthropic on Tuesday rolled out Claude Sonnet 4.6, its second major artificial intelligence model launch in less than two weeks.
The startup said Claude Sonnet 4.6 is better at using computers, coding, design, completing knowledge work tasks and processing large amounts of data.
For Anthropic's free users and paid Pro users, the model will now serve as the default within its Claude chatbot and its Claude Cowork productivity tool.
Anthropic is in the throes of a fierce competition with rivals like OpenAI and Google , and the launch of Claude Sonnet 4.6 serves as the latest example of the breakneck pace of development that's required to keep pace in the AI industry.
Anthropic launched another model, Claude Opus 4.6, just 12 days ago.
"Performance that would have previously required reaching for an Opus-class model — including on real world, economically valuable office tasks — is now available with Sonnet 4.6," Anthropic said in a blog post on Tuesday.