Anthropic boosts Claude Sonnet 4 AI memory to handle bigger coding projects with new update

Anthropic has increased the context window for its Claude Sonnet 4 model to 1 million tokens, a fivefold expansion from its previous 200,000-token limit. The move is aimed at strengthening its position in the competitive AI coding market, where it faces rivals such as OpenAI and Google.

Context windows define the amount of information an AI model can process at once. According to Anthropic, the new limit enables Claude Sonnet 4 to handle the equivalent of 2,500 pages of text or an entire copy of War and Peace in a single request. In coding tasks, the capacity has increased from around 20,000 lines of code to between 75,000 and 110,000 lines, allowing for complete code base analysis without splitting projects into smaller segments.

Brad Abrams, product lead for Claude, told The Verge that the larger context window addresses one of the most frequent challenges for enterprise customers, the need to break problems into smaller parts. Anthropic said the change will benefit clients across sectors including software development, pharmaceuticals, retail, professional services, and legal services.