Xcode 26.3

Xcode 26.3 is a powerful development tool that introduces agentic coding, a new way for developers to build applications. It allows coding agents, like Anthropic's Claude Agent and OpenAI's Codex, to work directly within Xcode. These agents can help with complex tasks, making app development faster and more efficient. Agentic coding means Xcode can work more independently to achieve a developer's goals, breaking down tasks and using built-in tools.

Benefits

Agentic coding in Xcode 26.3 significantly boosts productivity and creativity. It streamlines the development process, freeing up developers to focus on innovative ideas. Developers can integrate advanced reasoning from models like Claude Agent and Codex directly into their app building. This combination optimizes results for Apple platforms, giving developers the choice of which model works best for their project.

Use Cases

Coding agents in Xcode 26.3 can help throughout the entire app development process. They can search for information in documentation, look through project files, change project settings, and even check their work by viewing Xcode Previews. They can then make improvements and fix issues, leading to quicker development cycles.

Vibes

Susan Prescott, Apple's vice president of Worldwide Developer Relations, noted that agentic coding enhances productivity and creativity by simplifying the development workflow. This allows developers to concentrate more on innovation.

Additional Information

Xcode 26.3 also introduces the Model Context Protocol, an open standard that lets developers connect any compatible agent or tool to Xcode. Xcode 26.3 is available as a release candidate for Apple Developer Program members, with a full release coming soon to the App Store. Note that terms of service from Anthropic and OpenAI may apply.