Anthropic has expanded Claude's context window from 9K to 100K tokens, allowing businesses to submit hundreds of pages of materials for analysis and enabling conversations to go on for hours or days. This update enables Claude to digest and analyze large amounts of text, such as entire books, in under a minute. The 100K context window is now available in the API. This expansion allows for various applications, including digesting dense documents, analyzing strategic risks, and identifying risks and themes across legal documents.