@Generable Macro Swift Guide: Apple's AI Revolution

What if I told you that Apple just changed everything about how we build AI-powered iOS apps? With iOS 26's Foundation Models framework, the @Generable macro has become the secret weapon for developers who want to harness on-device AI without breaking a sweat.

I've been diving deep into Apple's Foundation Models since WWDC 2026, and I can honestly say this is the biggest shift in iOS AI development since CoreML first launched. The @Generable macro isn't just another Swift feature — it's Apple's answer to making structured AI output as simple as defining a Swift struct.

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Table of Contents

What is the @Generable Macro?

Setting Up Your First @Generable Model

Advanced @Generable Patterns

Real-World Use Cases

Performance and Best Practices

Frequently Asked Questions

What is the @Generable Macro?

The @Generable macro is Apple's Swift-native solution for getting structured output from the on-device language model.…