What is Command-G?

Command‑G Command‑G is an AI copilot for Xcode that provides code completion and contextual ChatGPT interaction while you develop for iOS, macOS, and visionOS. The autocomplete feature is powered by Codeium and offers suggestions in real time, helping to reduce repetitive coding work and spark new ideas.

ChatGPT integration lets developers insert the current file as context in conversations, enabling on‑the‑fly problem solving without leaving the IDE. The application does not collect user code or messages, and minimal telemetry is used only for license management and software updates.

Command‑G communicates directly with the respective API providers, and the privacy policies of OpenAI and Codeium govern each service. It is available for macOS 12 and newer, and is developed by Olivier Truong, former engineer at Stripe and Facebook.

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Command-G's key features

Code autocomplete via Codeium
ChatGPT code conversation
Xcode copilot integration
Supports iOS, macOS, visionOS
macOS 12+ requirement
Privacy: no telemetry
Free with OpenAI API key

Command-G use cases

Accelerate SwiftUI development by using Command‑G to auto-complete view components and instantly receive ChatGPT‑powered suggestions for layout tweaks, all within Xcode without leaving the editor.
Resolve runtime crashes in an iOS networking module by leveraging Command‑G's on‑the‑fly problem solving: ask the AI to identify the source of a data parsing error while you watch the code completion guide you to a fix.
Build VisionOS experiences faster by having Command‑G provide real‑time code suggestions for spatial UI elements, enabling you to iterate on 3D layouts directly in Xcode.