Flutter-QNN runs local LLMs on Snapdragon via Qualcomm's Hexagon NPU
carrycooldude · x · 2026-08-17
The author open-sourced Flutter-QNN, a Flutter app that runs LLMs locally on Snapdragon devices. Key points:
- Integrates Qualcomm QNN via the fluttergemma package, leveraging the Hexagon NPU for hardware-accelerated inference
- Runs models like Gemma and Qwen fully on-device, with no cloud round-trip
- Implements NPU → GPU → CPU fallback
- Supports streaming on-device generation
- Includes a technical deep dive on how the pieces fit together under the hood
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