最新报道:Anthropic launched Claude Sonnet 4.5, a frontier AI model claiming state-of-the-art coding performance and the ability to build production-ready applications. Priced at $3 per million input tokens and $15 per million output tokens, it matches Claude Sonnet 4's rates. The model demonstrated autonomous coding for up to 30 hours in trials, handling tasks like database setup, domain purchases, and security audits. It also features improved alignment with reduced sycophancy and deception, alongside the new Claude Agent SDK for developer use.