Anthropic’s Sonnet 4.6 doubles the context window to a beta 1 million tokens, keeps pricing at $3 per million input tokens, delivers flagship‑level performance at 60 % of Opus 4.6’s cost, and includes real‑world case evidence of up to 80 % API cost reduction for developers.
Claude Sonnet 4.6, Anthropic’s latest model, introduces a beta‑stage million‑token window and markedly better coding, computer‑use and long‑context reasoning, scoring 72.5% on OSWorld versus 14.9% for Sonnet 3.5, while offering Excel connectors, dynamic search filtering, stronger prompt‑injection resistance, and a pricing tier that makes it a strong alternative to Opus for many workloads.
Anthropic released Sonnet 4.6 just 12 days after Opus 4.6, delivering near‑Opus capabilities across coding, computer use, long‑context reasoning, and agent planning with a 1 M‑token window, while keeping the lower Sonnet price, prompting mixed community debate and rapid ecosystem adoption.
