Voice & Speech

Sherpa-ONNX

Speech processing toolkit using ONNXruntime for offline use across multiple platforms.

Status
Generally available
Last checked
Checked · Oct 16, 2026
License
Open source
Pricing
Free tier · from $0

What it is

Sherpa-ONNX provides speech-to-text, text-to-speech, speaker diarization, and other voice AI functionalities without internet connection. It supports various programming languages and hardware architectures including embedded systems and mobile devices.

Sherpa-ONNX stands out as an open-source, offline-capable toolkit for voice AI functionalities that supports multiple platforms and programming languages.

When it fits — and when it doesn’t

A good fit for

  • Teams building voice-enabled applications that require offline functionality

  • Developers working on embedded systems or mobile devices needing comprehensive speech processing capabilities

  • Projects requiring cross-platform support for speech AI functionalities without internet dependency

Look elsewhere if

  • Applications where real-time cloud-based updates and integrations are critical

  • Teams preferring a fully managed service over self-hosted solutions

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Steep learning curve for non-C++ developers

    Primary language is C++, which may be unfamiliar and complex for developers with different primary languages.

  2. 02

    Limited documentation and examples

    The official repository lacks comprehensive tutorials, making it difficult to understand advanced use cases without diving into the source code.

  3. 03

    Performance issues on less powerful hardware

    Voice AI functionalities can be resource-intensive and may lead to slow performance or crashes on embedded systems with limited processing power.

  4. 04

    Small community support

    The open-source project has a relatively small number of contributors, leading to slower issue resolution and feature development.

What it does well

  • Supports offline processing without internet connection

  • Works across multiple platforms including embedded systems and mobile devices

  • Offers a wide range of voice AI functionalities like speech-to-text, text-to-speech, speaker diarization

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

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Set up Sherpa-ONNX

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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