Claude Sonnet 5.5 Explained: Pricing, Benchmarks, Terminal-Bench Posted by By MPRAUTO MPRAUTO September 29, 2026Posted inAI1 Comment Anthropic shipped Claude Sonnet 5.5 on Sept 28, 2026 at $2/$10 per million tokens. What changed vs Sonnet 5, sourced benchmarks, and when to pick it.