Build Your First AI Chatbot App with SwiftUI + Foundation Models Framework PART 1 | iOS26 | WWDC25

Video Description

Building a AI powered Chat App with Apple's New Foundation Models Framework In this tutorial, we dive into Apple's new Foundation Models framework introduced at WWDC 2025, which allows you to use Apples local LLMs in your apps. You will learn about the device requirements, setting up the framework, and implementing a chatbot for dog-related inquiries. We'll also explore prompt engineering, streaming responses, and session management to build a production-ready app. By the end, you'll have a fully functional app that offers sophisticated, AI-driven responses to dog-related queries. Check out the continuation in the next video where we explore tool calling! To test the new Foundation Models Framework, you will need the new Xcode 26. You can run it in the simulator if your mac uses macOS Tahoe and has Apple Intelligence enabled. ## ⬇️ Download project files https://school.swiftyplace.com/f/project-files-foundation-models-framework ### Supported Devices iPhone (must run iOS 26+ and have A17 Pro or newer) - iPhone 15 Pro & 15 Pro Max - iPhone 16, 16 Plus, 16 Pro, 16 Pro Max, 16e iPad (requires A17 Pro or M1+) - iPad Pro (M1 or later) — 5th gen (2021) and newer - iPad Air (M1 or later) — 5th gen (2022) and newer - iPad mini (A17 Pro chip) — 7th gen (2024) Mac - Any Mac with Apple Silicon (M1, M2, M3, M4 series) ### Outline 00:00 Introduction to Apple's Foundation Models Framework 03:25 Availability and Supported Devices 06:53 Checking Model Availability in Code 12:31 Write you first generating chat responses 15:59 Errors: What can go wrong 18:47 Exploring Model Specifications 22:12 Building a Pet Trainer chatbot 24:08 LanguageModelSession: Settings and behavior 29:38 Streaming Responses for better UX design 31:13 Connecting the View Model 35:31 Animating the UI 37:29 Handling User Input and Responses 45:38 Restarting a new chat session 47:56 What`s next If you liked what you learned and you want to see more, check out one of my courses! 👨‍💻 my macOS development course https://learn.swiftyplace.com/macos-development-swiftui-course 👨‍💻 my Core Data and SwiftUI course https://learn.swiftyplace.com/swiftui-core-data-mastery-course 👩🏻‍💻 SwiftUI layout course https://learn.swiftyplace.com/swiftui-layout-course 👩🏻‍💻 Combine Framework course https://learn.swiftyplace.com/the-swifty-combine-framework-course ----------------- What to Watch Next https://youtu.be/mHvw7Tbhwa4 ------------------- 👉 About Karin Prater Hi, I’m Karin Prater—an iOS developer and educator helping you master Swift, SwiftUI, and real-world iOS app development. I create no-fluff tutorials on SwiftUI architecture, UIKit, Combine, Core Data, and how to build iPhone and macOS apps with best practices. Subscribe for weekly deep dives into Xcode, Swift design patterns, and everything you need to grow as an Apple developer. New videos every week on iOS development, SwiftUI, and app architecture that actually scales. #SwiftUI #foundationmodels