Anthropic releases Claude Sonnet 5 with agentic capabilities at lower cost

According to TechCrunch, Anthropic released Claude Sonnet 5 on June 30, 2026, positioning it as a cheaper alternative to larger models for agentic deployments. The model performs close to Opus 4.8 but at significantly lower cost and became the default model for free and Pro plans. Anthropic said it can make plans, use tools like browsers and terminals, and run autonomously at a level that previously required larger models.