Claude Opus 4.6 and Sonnet 4.6 go online with over a million contextual windows.

On March 13th, local time, Anthropic's artificial intelligence chatbot Claude announced that Claude Opus 4.6 and Sonnet 4.6 are now available on the Claude platform with a full 1 million token context window at standard pricing. The standard pricing applies to the entire window - Opus 4.6 is priced at $5/25 per million tokens, while Sonnet 4.6 is priced at $3/15 per million tokens. Claude stated that this update includes unified pricing, a full context window, meaning there is no extra fee for longer context, and all context lengths are subject to the full rate limit.