RunAnywhere MLX for Flutter

Optional Apple MLX backend for the RunAnywhere Flutter SDK. The package uses the canonical Swift RunAnywhereMLX runtime and supports LLM, VLM, embedding, speech-recognition, and speech-synthesis models on physical iOS 17.5 or newer devices. The arm64 iOS Simulator slice is provided only for package, compile, link, and startup validation; MLX registration returns false there.

The iOS plugin intentionally uses CocoaPods. Its precompiled Hub/Crypto dependencies look for named bundles at the application root, and CocoaPods preserves that required layout without introducing SwiftPM module collisions.

Requirements

• Flutter 3.44+
• Xcode 26+ with the Swift 6.2 toolchain
• A physical Apple device running iOS 17.5+ for MLX execution

dependencies:
  runanywhere: ^0.20.11
  runanywhere_mlx: ^0.20.11

Register the backend before initializing the core SDK:

import 'package:runanywhere_mlx/runanywhere_mlx.dart';

final mlxRegistered = await MLX.register();

MLX.register() is idempotent and returns false when the runtime is not available. Model registration, download, loading, and inference use the normal RunAnywhere core APIs.