Claude's 1M Context Window Is Now Generally Available

Claude's 1M Context Window Is Now Generally Available Meta Description: 1M context is now generally available for Opus 4.6 and Sonnet 4.6 - here's what it means, who benefits most, and how to start using it today. TL;DR: Anthropic has made its 1M token context window generally available for Claude Opus 4.6 and Claude Sonnet 4.6. This is a massive leap for developers, researchers, and enterprises who need to process large documents, long codebases, or extended conversations in a single API call. Here's everything you need to know.