Claude 3.7 Sonnet is the latest model from Anthropic, a hybrid reasoning model that can produce near-instant responses or extended, step-by-step thinking, with fine-grained control over how long the model thinks for. This model has shown particularly strong improvements in coding and front-end web development capabilities. Claude 3.7 Sonnet is now available on all plans, including Free, Pro, Team, and Enterprise, as well as on various APIs such as Anthropic API, Amazon Bedrock, and Google Cloud's Vertex AI. The model has the same price as its predecessors, with $3 per million input tokens and $15 per million output tokens. Claude 3.7 Sonnet embodies a unified approach to reasoning, where it can represent an ordinary LLM and a reasoning model in one, allowing users to pick when they want the model to answer normally or think longer before answering. The model also allows users to control the budget for thinking through the API, enabling them to trade off speed and cost for quality of answer. Additionally, Claude 3.7 Sonnet has improved its coding capabilities, including handling complex codebases, advanced tool use, and planning code changes. Claude Code is a new agentic coding tool that enables developers to delegate substantial engineering tasks to Claude directly from their terminal, reducing development time and overhead. Claude Code is available as a limited research preview and will be continually improved based on user feedback. The model has also been tested for security, safety, and reliability, with improvements in distinguishing between harmful and benign requests, and reducing unnecessary refusals by 45%.