Installation

Prerequisites#

• Dart SDK >= 3.10.7
• Flutter SDK >= 3.38.0 (if you build Flutter apps)

Add dependency#

dependencies:
  llamadart: ^0.6.4

Then resolve packages:

dart pub get
# or
flutter pub get

What happens on first run/build#

On the first dart run / flutter run for a native target, llamadart:

1. Detects platform and architecture.
2. Resolves the matching runtime bundle from leehack/llamadart-native.
3. Wires native assets into your app process.

No local C++ toolchain setup is required for consumers.

Optional backend selection (non-Apple)#

You can configure backend modules per target in your pubspec.yaml:

hooks:
  user_defines:
    llamadart:
      llamadart_native_backends:
        platforms:
          android-arm64:
            backends: [vulkan]
            cpu_profile: full # default: full; use compact for baseline-only CPU
          linux-x64: [vulkan, cuda]
          windows-x64: [vulkan, cuda]

Module availability is platform/arch specific and tied to the pinned native bundle tag. See Platform & Backend Matrix for the current per-target module list.

For android-arm64, CPU variant policy is configurable:

• cpu_profile: full (default) includes all Android ARM CPU variants.
• cpu_profile: compact keeps baseline CPU variant only.
• cpu_variants: [...] (advanced) selects exact variants and overrides profile.

Canonical cpu_variants values:

• android_armv8.0_1
• android_armv8.2_1
• android_armv8.2_2
• android_armv8.6_1
• android_armv9.0_1
• android_armv9.2_1
• android_armv9.2_2

Key differences:

• android_armv8.2_1: DOTPROD
• android_armv8.2_2: DOTPROD + FP16_VECTOR_ARITHMETIC
• android_armv9.2_1: DOTPROD + FP16_VECTOR_ARITHMETIC + MATMUL_INT8 + SVE + SME
• android_armv9.2_2: android_armv9.2_1 + SVE2

Selection precedence:

1. cpu_variants (if present and valid)
2. cpu_profile
3. default cpu_profile: full

If requested modules are unavailable for a target, llamadart falls back to safe defaults and logs warnings.

Verify installation quickly#

Run a minimal script that loads a GGUF model and generates 1 token:

dart run your_app.dart

If the runtime initializes and model loads successfully, your setup is complete.