Claude 2.1 is a significant update to the Claude model, delivering advancements in key capabilities for enterprises, including an industry-leading 200K token context window, reductions in rates of model hallucination, and the introduction of tool use. This new feature enables users to integrate Claude with their existing processes, products, and APIs. The updated model also boasts a 2x decrease in false statements compared to its predecessor, improving honesty and accuracy. Additionally, Claude 2.1 features improved comprehension and summarization capabilities, particularly for long, complex documents. The update is now available over API in the Console and is powering the claude.ai chat experience. The pricing has also been updated to improve cost efficiency for customers across models.