Chance Miller / 9to5Mac:Apple's Xcode 26 beta 7 adds support for GPT-5 and Claude Sonnet 4, which developers can use by signing into their paid Claude account — Apple has released a new beta of Xcode 26 for developers today with a pair of notable changes. There's now support for ChatGPT 5, as well as built-in integration with Anthropic's Claude.