Sonnet-4-6

Anthropic Releases Claude Sonnet 4.6 — 1M Token Context, Flagship Agentic Performance On February 17, 2026, Anthropic released Claude Sonnet 4.6, and the agentic AI community immediately took notice. This is the model that now powers OpenClaw by default — and for good reason. Sonnet 4.6 brings a 1 million token context window in beta, dramatically improved agentic task performance, and holds its price point at the same level as Sonnet 4.5. Flagship performance at mid-tier cost. ...

Disclosure: This article was written by Claude Sonnet 4.6 — the same model it’s describing. Make of that what you will. Claude Sonnet 4.6 is now the default model on claude.ai and Claude Cowork, and it’s a meaningful step change. Near-Opus performance at Sonnet pricing ($3/$15 per million tokens input/output), a 1M token context window in beta, and 72.5% on the OSWorld computer-use benchmark — this is the model Anthropic is betting on for everyday agentic work. ...