Open-source speech recognition built for developers. > > Our engine is fully open-source, and you choose how to deploy models: use our CC-BY-SA licensed community models or upgrade to commercial models with premium performance. We focus on building fast, high-quality production models and providing examples that take the guesswork out of integration.
- ā” Fast & lightweight ā optimized Zipformer models (Whisper and parakeet style coming). - š§© Flexible licensing ā use fully open-source CC-BY-SA community models or integrate commercial/OEM models for premium accuracy. - š Runs anywhere ā cross-platform and with support for many programming languages. - š± Mobile & web ready ā works on Android, (iOS coming soon) in the browser via WASM, and with WebSockets for streaming. - š§° Production focus ā we prioritize real-world performance, stability, and examples. - š¤ Customizable ā bring your own model, fine-tune for domain-specific vocabularies, or commission us.
> Our mission: fast, high-quality ASR with licensing that works for both open-source and closed-source projects.
ā¶ļø Android App Run speech recognition natively on your phone using ONNX Runtime. - Kroko ASR Model Explorer
š Browser (WASM) Experience transcription directly in your browser, no server required. - Hugging Face Spaces Demo
- Licensed under CC-BY-SA. - Low-latency, lightweight models. - Perfect for hobby projects, research, or free tiers. - Faster and smaller than Whisper/Parakeet in many scenarios.
- Premium accuracy and robustness. - Licensed for professional and production products. - Designed for SaaS, dev tools, and enterprise integration.
- DIY: Use our training guides to build and distribute your own models. - Professional services: Work with us to create fine-tuned models for accents, jargon, or specialized domains.
> This gives you full freedom: start free, scale commercially, or roll your own.
Join the Kroko community to learn, share, and contribute:
- š¬ Discord ā chat with developers, ask questions, and share projects. - š¢ Reddit ā join discussions, showcase your integrations, and follow updates. - š¤ Hugging Face ā explore our models, try live demos, and contribute feedback.
PRs welcome! Run `ruff`, `black`, and `pytest` before submitting.
Apache-2.0 engine. Models licensed separately (CC-BY-SA community or commercial OEM).
ā ļø Note: Kroko ASR is an independent project and is not affiliated with Sherpa-ONNX. We build on their excellent open-source engine, but our models, demos, and packaging are developed and maintained separately.