Create a study guide for Foundation Model Framework

Here's a study guide for the Foundation Model Framework based on the content presented at WWDC 2025:

Overview of the Foundation Models Framework

1. Introduction to the Framework

   • The Foundation Models Framework provides access to an on-device large language model with a Swift API.
   • It is available on macOS, iOS, iPadOS, and VisionOS.
   • The framework is designed to enhance app features like personalized search suggestions and content generation while maintaining user privacy by running entirely on-device.

2. Key Features

   • Guided Generation: Allows for structured output in Swift using macros like Generable and Guide. This helps in generating instances of specific types and controlling the values of properties.
   • Tool Calling: Enables the model to autonomously execute code defined in your app, allowing for dynamic interaction and data fetching.
   • Stateful Sessions: Supports multi-turn interactions by maintaining session state, allowing for more complex and context-aware conversations.

3. Performance and Safety

   • The model is optimized with state-of-the-art quantization techniques and speculative decoding for performance efficiency.
   • The framework includes built-in guardrails to ensure safety and prevent inappropriate content generation. Developers can add custom safety rules for specific use cases.

Practical Implementation

1. Prompt Engineering

   • Start by importing the Foundation Models framework, creating a session, and sending prompts to the model.
   • Use Xcode's Playground to iterate on prompt design and receive live feedback.

2. Building Applications

   • The framework can be used to build applications that generate itineraries, dialogue for game characters, and more.
   • Example: An app that plans trips by generating itineraries and autonomously selecting points of interest using tool calling.

3. Code-Along Session

   • A practical session is available to guide developers through building an app using the Foundation Models framework, focusing on prompt engineering, tool calling, and streaming output.

Sessions to Explore

• Meet the Foundation Models framework (00:00:00): Provides a high-level overview of the framework, including guided generation and tool calling.
• Code-along: Bring on-device AI to your app using the Foundation Models framework (00:00:00): A step-by-step guide to implementing the framework in an app.
• Deep dive into the Foundation Models framework (00:00:00): Offers an in-depth look at sessions, generable types, dynamic schemas, and tool calling.
• Explore prompt design & safety for on-device foundation models (00:00:00): Focuses on best practices for prompt design and AI safety considerations.

This study guide should provide a comprehensive understanding of the Foundation Models Framework and how to effectively utilize it in your applications.