Licences

What heynixi is built with.

For heynixi for Windows 0.5.0. Last updated: November 1, 2026

heynixi is free and closed source. It includes these open-source components and models. Their licences apply to them, and the licence agreement doesn’t limit the rights they give you.

The full licence texts ship with the app, in THIRD-PARTY-NOTICES.md and the licenses folder beside it. The About screen lists them too.

Components and models

• Qwen3.5 0.8B model (optional download)Apache-2.0By the Qwen team. GGUF files by Unsloth, downloaded from Hugging Face.
• Qwen3.5 2B model (optional download)Apache-2.0By the Qwen team. GGUF files by Unsloth, downloaded from Hugging Face.
• NVIDIA Parakeet TDT 0.6B v3CC-BY-4.0Speech recognition uses NVIDIA Parakeet TDT 0.6B v3, licensed under CC-BY-4.0.
• Whisper weights (Systran/faster-whisper-small)MIT
• Silero VADMIT
• llama.cpp and ggmlMIT
• LLVM OpenMP runtimeApache-2.0 with LLVM exceptionShips inside the llama.cpp release.
• Coucou (github.com/Louis-CFM/coucou)MIT, Copyright (c) 2026 Louis RailléCode only: the notch’s states, timers and geometry, and the desktop face rules, ported to Python. Coucou’s name, character, icon, sounds and media are not used.
• browser-use (github.com/browser-use/browser-use)MIT, Copyright (c) 2024 Gregor ZunicCode ideas only: the web agent’s prompt shape, page-element format, done check and loop detector, rewritten for Nixi.
• Qt for Python (PySide6)LGPLv3The Qt libraries ship as separate files, so you can replace them.
• faster-whisper, CTranslate2MIT
• onnx-asrMIT
• FastAPI, pydanticMIT / Apache-2.0
• python-multipart, huggingface-hub, hf-xetApache-2.0
• uvicorn, httpx, python-dotenvBSD-3-Clause
• cryptographyApache-2.0 / BSD-3-Clause
• sounddevice, mss, pycaw, comtypes, keyboardMIT
• pywinrt (winrt-runtime and the Windows.* packages)MIT
• numpy, psutilBSD-3-Clause
• PillowMIT-CMU

Windows voices

The System voice option uses the speech voices that come with Windows. heynixi doesn’t include them. Each voice is under its supplier’s terms.

Questions

Email [email protected].