Safer, cheaper, and nothing to do with cybersecurity

Claude Sonnet 5 is the most agentic Sonnet model yet, rivaling Opus 4.8 in performance at lower prices, Anthropic said.

The company’s new mid-tier model, the successor to Sonnet 4.6, can “make plans, use tools like browsers and terminals, and run autonomously at a level that, just a few months ago,…

Anthropic’s Claude Sonnet 5 brings stronger agentic capabilities, lower pricing, and improved safety, positioning the model as a cheaper alternative to Opus, GPT-5.5, and Gemini…

It says the model can use browsers, plan, code and do knowledge work while posing fewer risks than Mythos and Fable.

Claude Sonnet 5 brings agentic coding near Opus 4.8 at lower Sonnet pricing, with benchmarks and API details.

Anthropic introduces Claude Sonnet 5, a more capable option for developers building autonomous “agent” systems.

Anthropic shipped Claude Sonnet 5 on June 30, 2026, and the framing in the announcement is unusually...

Our most agentic Sonnet yet, with top-tier intelligence for coding and everyday professional work.

Safer, cheaper, and nothing to do with cybersecurity