Apple releases seventh Xcode 26 beta with GPT5 and Claude Sonnet 4

Apple released the seventh developer beta of Xcode 26 on Thursday, adding built‑in support for OpenAI's latest GPT5 model and integration with Anthropic's Claude Sonnet 4 to its integrated development environment. The update, aimed at making generative AI tools part of the coding workflow, is available to developers running a Mac with macOS Sequoia 15.5 or later.

Apple said the Xcode changes let developers "connect large language models directly into their coding experience to write code, tests, and documentation, iterate on a design, fix errors and more." ChatGPT integration in Xcode now defaults to GPT5, with two model choices labeled GPT5 and GPT5 Reasoning. According to Apple release notes, GPT5 is optimized for quick, high quality results suitable for most coding tasks, while GPT5 Reasoning takes more time to process and is intended for complex problems where greater accuracy is needed. GPT4.1 remains available as an alternative. Users can begin using ChatGPT in Xcode without creating an OpenAI account, though subscribers can sign in to expand request limits.

Anthropic support appears as a new entry in Xcode's Intelligence settings panel, where developers can add an...