Claude Sonnet 4.6
Hybrid reasoning model with fast, capable intelligence for real-time agents and high-volume work, featuring a 1M context window
Claude Sonnet 4.6 is a specific Anthropic Claude Sonnet model release announced on Feb 17, 2026, described as a full upgrade across coding, computer use, long-context reasoning, agent planning, knowledge work, and design, with a 1M token context window in beta.
Pricing
All prices are USD per million tokens (MTok). For Claude Sonnet 4.6, 5-minute cache writes are $3.75/MTok, 1-hour cache writes are $6/MTok, and cache hits & refreshes are $0.30/MTok.
Anthropic's official Claude Platform pricing documentation lists Claude Sonnet 4.6 model pricing in USD per million tokens: $3/MTok base input, $15/MTok output, and $0.30/MTok cache hits & refreshes. It also lists prompt cache writes at $3.75/MTok for 5 minutes and $6/MTok for 1 hour.