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 1 million 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. Key Takeaways 1M context is now generally available for both Claude Opus 4.6 and Claude Sonnet 4.6 — no waitlist, no beta access required A 1 million token context window can hold roughly 750,000 words , or about 10 full-length novels This unlocks practical use cases like full codebase analysis, legal document review, and multi-session memory Sonnet 4.6 offers the best price-to-performance ratio for most teams; Opus 4.6 is best for complex reasoning tas