axiom-foundation-models-ref
Foundation Models Framework — Complete API Reference
Overview
The Foundation Models framework provides access to Apple's on-device Large Language Model (3 billion parameters, 2-bit quantized) with a Swift API. This reference covers every API, all WWDC 2025 code examples, and comprehensive implementation patterns.
Model Specifications
Technical Details:
- Parameters: 3 billion (3B)
- Quantization: 2-bit
- Context Window: 4096 tokens (combined input + output)
- Supported Languages: English + additional languages via
SystemLanguageModel.default.supportedLanguages - Platforms: iOS 26+, macOS 26+, iPadOS 26+, axiom-visionOS 26+
Optimized For:
- Text summarization
- Information extraction
- Content classification
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