Build private, fast, and intelligent voice experiences with a complete on-device SDK. From wake word detection to speech synthesis — all running locally, with sub-millisecond latency.
Trusted by teams building the future of voice
10 engines. One SDK. Every platform. Everything runs on-device.
Custom keyword detection with <1ms latency. DS-CNN architecture, 20K params, 82KB models.
Streaming on-device STT with Zipformer and Whisper. Multiple model sizes for any hardware.
Natural on-device TTS with voice cloning support. Kokoro and Piper backends.
Neural VAD with ultra-low latency. Silero-compatible architecture for reliable detection.
Verify and identify speakers with ECAPA-TDNN embeddings. Biometric-grade accuracy.
Know who spoke when. Real-time speaker segmentation for meetings and conversations.
Neural noise removal with RNNoise and DeepFilterNet. Crystal-clear audio in any environment.
Extract intent directly from speech. Skip the text step — voice commands to actions instantly.
From zero to production in minutes, not months.
cargo add saj-speak
One dependency. Rust, Python, Node.js, WASM, C, or Swift — pick your binding.
WakeEngine::from_model("hey_saj.onnx")
Load a model, set a threshold. Use pre-trained or train your own via Console.
engine.process(&audio_frame)?
Runs on-device. No cloud. No API keys. No latency. Ships with your binary.
Three lines of code. That's all it takes to add wake word detection to your app.
Not an afterthought. Arabic, Hindi, and Urdu are built into the foundation alongside English — serving 1.09 billion speakers with zero competitors.
12 models · Full coverage
Hey Saj · Hey Bella · Ok Saj
12 models · MSA + Gulf
Ya Saj · Ya Bella · Ok Saj
8 models · Devanagari
Hey Saj · Hey Bella · Ya Bella
7 models · Nastaliq
Hey Saj · Hey Bella · Ya Bella
Start free. Scale as you grow. No hidden fees.
For prototyping and personal projects
For production apps and commercial use
For OEMs, fleets, and large-scale deployments
Join developers building private, intelligent voice experiences that run entirely on-device. No cloud. No latency. No compromise.