Anthropic has released its latest frontier AI model, Claude Sonnet 4.5, built for high-performance coding and building complex agents. Anthropic claims it is “the best coding model in the world” and “the best model at using computers,” with substantial gains in reasoning and math. Claude Sonnet 4.5 is distinctive in that it can build “production-ready” applications and is not limited to prototypes, Anthropic says, describing it as a major gain over previous models. The new model also excels in research as well as enterprise basics like cybersecurity and finance, per Anthropic. Continue reading Anthropic Claude Sonnet 4.5 Good at Coding and Collegiality

AI startup Anthropic is sharing new details of the “safe AI” principles that helped train its Claude chatbot. Also known as “Constitutional AI,” the method draws inspiration from treatises that range from a Universal Declaration of Human Rights to Apple’s Terms of Service and Anthropic’s own research. “What ‘values’ might a language model have?,” Anthropic asks, noting “our recently published research on Constitutional AI provides one answer by giving language models explicit values determined by a constitution, rather than values determined implicitly via large-scale human feedback.” Continue reading Anthropic Shares Details of Constitutional AI Used on Claude