Claude Sonnet 5 Just Launched
On June 30, 2026, Anthropic released Claude Sonnet 5, the newest version of its balanced mid tier model and the most agentic Sonnet the company has ever shipped. It is the direct successor to Sonnet 4.6, and it lands with one clear pitch: near Opus 4.8 quality at a fraction of the cost. The headline is not a benchmark. It is the price. Sonnet 5 launches with introductory pricing of $2 per million input tokens and $10 per million output tokens, cheaper than Opus 4.8, cheaper than OpenAI’s GPT-5.5, and cheaper than Google’s Gemini 3.1 Pro. For teams running agents at scale, where the same job can burn through millions […]
