Anthropic Launches Claude Sonnet 4.5, Its Best AI Model for Coding

Anthropic Launches Claude Sonnet 4.5, Its Best AI Model for Coding

Anthropic has launched a new frontier model called Claude Sonnet 4.5, which it claims offers state-of-the-art performance on coding benchmarks. The company says Claude Sonnet 4.5 is capable of building “production-ready” applications, rather than just prototypes, representing a leap in reliability from previous AI models. The new model is available via the Claude API and in the Claude chatbot. Pricing for developers is the same as the previous m…

Claude Sonnet 4.5 coding model improves agentic capabilities

Anthropic has released Claude Sonnet 4.5, an update of the company’s coding model that features extended autonomous operation, greater context awareness, and enhanced tool usage. Claude Sonnet 4.5 shows significant improvements on real-world computer tasks, agentic coding, agentic terminal coding, and agentic tools use, as well as reasoning and math, according to Anthropic. Claude Sonnet 4.5 can be accessed by developers using claude-sonnet-4-5 …