Claude Sonnet 5 launches as Anthropic's most agentic mid-tier model
Anthropic released Claude Sonnet 5 today, positioning it as close to Opus 4.8 in performance but at $2/M input and $10/M output tokens (introductory pricing through August 31), substantially improving on Sonnet 4.6 for tool use, browser control, and multi-step planning. The system card also notes the model is significantly less capable at cyber tasks than prior versions, which reportedly helped it clear US government review
For AI PMs in regulated enterprises, Sonnet 5 represents a meaningful cost-performance inflection โ capable agentic workflows that previously required flagship-tier spend can now be prototyped at mid-tier pricing, lowering the barrier to internal proof-of-concepts while the reduced cyber-capability profile may ease security review conversations