Anthropic launches Claude Sonnet 5, its most agentic Sonnet model

Claude Sonnet 5 is available now across all plans with introductory pricing of $2/M input tokens and $10/M output tokens until August 31, 2026. It delivers near-Opus 4.8 performance on agentic tasks, with significant improvements over Sonnet 4.6 in reasoning, tool use, and coding.