Claude Sonnet 4.6 1M Context Window Now GA — No Beta Header Required, Inline Visualizations Added

Anthropic / Claude Platform Release Notes·medium signal

Anthropic removed the beta requirement for Sonnet 4.6's 1M token context window: requests over 200k tokens now route automatically with no header flag needed. Simultaneously, Anthropic shipped inline custom charts and visualizations in Claude responses — Claude can now generate diagrams and data visualizations directly inside reply text. The 1M context GA applies to both Opus 4.6 and Sonnet 4.6 at standard pricing.