Claude Sonnet 5 is the most agentic Sonnet model yet, rivaling Opus 4.8 in performance at lower prices, Anthropic said.
Claude Sonnet 5 narrows the gap with Anthropic's flagship Opus 4.8, scoring close on key benchmarks while costing significantly less per token.
Mythos 5 has also been restored 'for a set of US organizations.' Anthropic says it will work with Amazon, Microsoft, Google, ...