Offline Voice EngineAvailable today

OpenVox

The all-in-one, fully offline voice engine speech-to-text and text-to-speech that run entirely on your own hardware.

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OpenVox is a complete voice stack that runs entirely on your own hardware, with no cloud, no API keys, and no per-minute fees. It's built for the places cloud voice services can't go: robots, embedded and edge devices, air-gapped systems, and any product where audio must never leave the machine.

Highlights

What sets it apart.

Fully offline / air-gapped

No internet required. Runs on your robot, your edge box, or an air-gapped system your hardware, your terms.

Zero marginal cost

No per-minute or per-character fees. Run it all day for free the hardware is the only limit.

Total privacy

Audio never leaves the machine. Nothing is uploaded, logged, or sent to someone else's servers.

Deterministic latency

On-device inference with no network round-trip or jitter a natural fit for real-time robotics.

No rate limits

Nothing throttled. Transcribe and synthesize as much as your machine can handle.

Built for the edge

A natural fit for robotics, defence, medical, industrial, maritime, and privacy-sensitive applications.

Available today

Streaming speech-to-text.

  • Real-time streaming with live partials that firm up into finals, plus word-level timestamps.
  • Robust in noise neural voice-activity detection instead of a crude volume gate.
  • Bounded latency via a sliding window, even for long, continuous speech.
  • CUDA-accelerated with automatic CPU fallback; the model auto-downloads once, then runs fully offline.
  • Multiple model sizes (tiny → large-v3) to trade speed for accuracy.
Available today

Human-sounding text-to-speech.

Genuinely human-sounding speech, fully offline, with built-in voices. The engine auto-selects the GPU when a working CUDA provider is available and falls back to CPU otherwise.

Available today

Voice cloning and restoration.

  • Zero-shot voice cloning from a short reference clip speak any text in that voice, fully local.
  • Every generated clip carries an imperceptible neural watermark for traceability.
  • Speech enhancement denoise, restore, and bandwidth-extend a poorly-recorded clip.
Roadmap

Where it's going.

  • Ultra-low-latency streaming TTS with barge-in for real-time robot speech.
  • A headless daemon and ROS 2 node for robot integration.
  • More hardware backends CUDA today; Jetson / ARM / Raspberry Pi next.
  • On-device adaptive fine-tuning and mic-array direction-of-arrival.
OpenVox

Hear and speak, entirely offline.

Speech-to-text, text-to-speech, voice cloning and enhancement are available today.

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