Apple is right there Xcode 26.3 has been releasedand this is a big step forward in terms of the company’s support of coding agents. The new release expands on the AI ​​features the company introduced in Xcode 26 at WWDC 2025 to give systems like Claude and ChatGPT more robust access to the in-house IDE.

In the update, Apple says Claude and OpenAI’s Codex “can search documentation, explore file structures, update project settings, and verify their work visually by taking Xcode Previews and iterating through builds and fixes.” This is in contrast to previous Xcode 26 releases where the same agents were limited to what they could see in a developer’s Xcode environment, limiting their utility. According to Apple, the change will give users tools they can use to streamline their processes and work more efficiently than ever before.

Developers can add Claude and Codex to their Xcode terminal from the Intelligence section of the app’s settings menu. Once a provider is selected, the interface allows users to also select their preferred model. So if you want the outputs of such GPT 5.1 to GPT 5.2, you can use the older system.

The tighter integration of Claude and Codex is made possible by the Model Context Protocol (MCP) servers deployed by Apple. MCP is a technology pioneered by Anthropic fall 2024 to make it easier for large language models like Claude to share data with third-party tools and systems. Since its introduction, MCP has become an industry standard — with OpenAI, for example, adoption of the protocol last year to facilitate its own set of connections.

Apple says it is working directly with Anthropic and OpenAI to optimize token usage through Xcode, but the company’s adoption of MCP means developers will be able to add any coding agent that supports the protocol to their terminal in the future. Xcode 26.3 is available to download for all members of the Apple Developer Program starting today, with Mac Store availability “coming soon.”