Anthropic Claude Sonnet 4.6: Near-Opus Performance at 1/5 the Cost — 1M Token Context Window in Beta
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. ...