The article outlines key updates and features related to Claude Opus 4.5, an advanced AI model. A notable change is the new effort parameter, which allows users to adjust the balance between intelligence and latency with a single dial. This affects all types of outputs, including responses and tool calls. Additionally, the responsiveness of the model to prompts has improved, which may require users to adjust their language. For example, commands that previously emphasized urgency might now lead to overtriggering of tools. New API features have also been introduced to enhance the building of scalable agents. These include a Tool Search Tool, Programmatic Tool Calling, and Tool Use Examples, which streamline interactions and reduce context bloat. Another significant addition is the Skills feature, enabling users to package specialized knowledge into reusable capabilities that Claude can access on demand. This allows for more complex tasks without the need to create entirely new agents, simplifying the process for users. The article highlights a competition called “Built with Claude Sonnet 4.5,” encouraging users to showcase their creations using the model. Winners will receive a year of Claude Max 20x and $1,000 in API credits. To participate, users must share their projects detailing the development process. Lastly, updates to Claude Code include the introduction of Hooks, which give users control over when specific actions occur, and Desktop Extensions (dxt files) that simplify local server sharing and installation.