FoundationChat

A SwiftUI chat application built with Apple's Foundation Models framework, showcasing on-device AI capabilities.

Requirements

• iOS 26.0+ / iPadOS 26.0+ / macOS 26.0+ / visionOS 26.0+
• Xcode 26.0+ (with iOS 26 SDK)
• Device with Apple Intelligence support
• Apple Intelligence must be enabled in Settings

Features

• ✅ On-device AI chat with no internet required
• ✅ Real-time streaming responses
• ✅ Automatic availability checking
• ✅ Context management
• ✅ Safety guardrails
• ✅ Performance optimizations
• ✅ Clean SwiftUI interface

Getting Started

1. Open FoundationChat.xcodeproj in Xcode
2. Ensure your development device has Apple Intelligence enabled
3. Build and run on a supported device (not simulator for accurate performance)

Key Concepts

Availability Checking

Always check if the model is available before use:

guard SystemLanguageModel.default.isAvailable else { 
    // Show fallback UI
    return 
}

Basic Usage

let session = LanguageModelSession()
let response = try await session.respond(to: "Hello!")
print(response.content)

Streaming Responses

for try await chunk in session.streamResponse(to: prompt) {
    // Update UI with partial content
}

Documentation

• Examples - Detailed implementation examples

Contributing

This is an example project demonstrating Foundation Models usage. Feel free to fork and experiment!

License

MIT License - See LICENSE file for details