Third-Party Licenses
Last updated: February 25, 2026
Hapi is built using several open source components. We are grateful to the developers and organizations who have made their work available under permissive licenses. This page lists all third-party components and their respective licenses.
Machine Learning Models
NVIDIA Parakeet TDT
Speech recognition model
License: Creative Commons Attribution 4.0 International (CC-BY-4.0)
This model is provided by NVIDIA Corporation. Under the CC-BY-4.0 license, appropriate credit must be given. Learn more at Hugging Face.
Qwen3
Language model for text formatting and AI features
License: Apache License 2.0
Developed by Alibaba Cloud. See the Qwen collection on Hugging Face.
WhisperKit Models
High-accuracy speech recognition
License: MIT License
Based on OpenAI Whisper, optimized for Apple Silicon by Argmax, Inc. See WhisperKit on GitHub.
Swift Libraries
| Component | License | Copyright |
|---|---|---|
| FluidAudio | Apache 2.0 | FluidAudio contributors |
| WhisperKit | MIT | Argmax, Inc. |
| MLX Swift | MIT | Apple Inc. |
| MLX Swift LM | MIT | Apple Inc. |
| LLM.swift | MIT | eastriverlee |
| ONNX Runtime | MIT | Microsoft Corporation |
| Sparkle | MIT | Sparkle Project |
| Swift Transformers | Apache 2.0 | Hugging Face |
| Swift Jinja | Apache 2.0 | Hugging Face |
| Swift Argument Parser | Apache 2.0 | Apple Inc. |
| Swift Collections | Apache 2.0 | Apple Inc. |
| Swift Numerics | Apache 2.0 | Apple Inc. |
Components Bundled in FluidAudio
| Component | License | Copyright |
|---|---|---|
| fastcluster | BSD 2-Clause | Daniel Müllner, Google Inc. |
| VBx (pyannote) | Apache 2.0 | Brno University of Technology |
License Summaries
MIT License
A permissive license that allows commercial use, modification, distribution, and private use. The only requirement is to include the original copyright notice and license text.
Apache License 2.0
A permissive license that allows commercial use, modification, distribution, and private use. Requires preservation of copyright notices and includes an express grant of patent rights.
BSD 2-Clause License
A permissive license that allows commercial use, modification, and distribution. Requires preservation of copyright notices.
Creative Commons Attribution 4.0 (CC-BY-4.0)
Allows commercial use, modification, and distribution. Requires attribution to the original creator. Used for NVIDIA Parakeet models.
Full License Texts
The complete license texts for all components are available in the application bundle and in the source repositories linked above. Key licenses:
Questions
If you have questions about the licensing of any component used in Hapi, please contact us at hey@happyoperators.com.