Build Agentic Swift Apps With Dynamic Profiles

This article discusses Apple's new Dynamic Profiles feature introduced at WWDC26 for the Foundation Models framework, enabling developers to build agentic Swift apps with AI. It explains how Dynamic Profiles provide a declarative way to manage AI sessions that switch between different modes, such as image analysis, brainstorming with reasoning models, and quick follow-ups, while preserving conversation history. The article contrasts this with the messy imperative orchestration code previously required, using a craft journal app example to illustrate the problem and solution. It covers the use of LanguageModelSession.DynamicProfile, tool calling, and mode switching, making it relevant for iOS developers working with AI and machine learning in Swift.