Apple publishes details on Foundation models

Extensive development documentation and highlights of the models

Apple published development articles on FoundationModels framework. These include basic development tasks – using Foundation models, controlling safety guardrails, generating structured data, providing external knowledge to models with Tools and fine-tuning models with adapters.

Developer documentation supports WWDC25 sessions and source code available for review.

https://machinelearning.apple.com/research/apple-foundation-models-2025-updates

Also, Apple published a paper on model architecture and model comparisons with other similar on-device and server models.

https://machinelearning.apple.com/research/apple-foundation-models-2025-updates

Apple Machine Learning Research: Updates to Apple's On-Device and Server Foundation Language Models

Apple Developer:

• Generating content and performing tasks with Foundation Models

• Improving safety from generative model output

• Generating Swift data structures with guided generation

• Expanding generation with tool calling

• Get started with Foundation Models adapter training

References:

• Apple just gave developers access to its new local AI models, here’s how they perform