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Mozilla DeepSpeech

Paid

Build voice-activated home assistants, customer service bots, and hands-free mobile apps for navigation.

3.0
New AI ToolsContact
Inputs: audioOutputs: text
Type
Saas
Company
Mozilla
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About Mozilla DeepSpeech

Mozilla DeepSpeech is a speech recognition system designed to help developers create applications that can understand spoken words. It uses deep learning to accurately transcribe audio files into text, making it a valuable tool for any developer who wants to add speech recognition capabilities to their projects. With Mozilla DeepSpeech, developers can create a wide range of applications that can understand and respond to voice commands, such as voice-activated home assistants, automated customer service bots, and more. The software is easy to use and requires minimal setup, and its deep neural network architecture makes it fast and efficient. Through its comprehensive API, developers can quickly integrate Mozilla DeepSpeech into their projects, allowing them to start creating voice-activated applications quickly and easily.

Key Features

Create a voice-activated home assistant for controlling a smart home.
Create an automated customer service bot that can respond to spoken inquiries.
Create a voice-activated mobile app for hands-free navigation.

Pros & Cons

Pros
  • Fully offline operation ensures privacy and low latency
  • Runs on a wide range of hardware, from Raspberry Pi to high-end servers
  • Open source with permissive license (MPL-2.0) allows customization and commercial use
  • Pre-trained models and extensive documentation lower the barrier to entry
  • Real-time performance makes it suitable for interactive applications
Cons
  • Project is now discontinued and archived (no further updates or support)
  • Requires technical expertise to set up, train custom models, or integrate
  • Accuracy may be lower than cloud-based speech-to-text services (e.g., Google, AWS)
  • Limited language support out of the box (primarily English models available)

Best For

Create a voice-activated home assistant for controlling a smart home.Create an automated customer service bot that can respond to spoken inquiries.Create a voice-activated mobile app for hands-free navigation.

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FAQ

Is Mozilla DeepSpeech still maintained?
No, the project was archived by Mozilla on June 19, 2025, and is now read-only. No further updates or support will be provided.
On what hardware can DeepSpeech run?
DeepSpeech can run on devices ranging from a Raspberry Pi 4 to high-power GPU servers, performing real-time speech-to-text on all of them.
What programming languages are supported for integration?
DeepSpeech provides a Python package, a native client library (C++), and bindings for other languages through its API. The repository includes examples and documentation.
Is DeepSpeech free to use?
Yes, DeepSpeech is open source under the Mozilla Public License 2.0. You can download, use, and modify it for free, including for commercial projects.
Does DeepSpeech require an internet connection?
No, DeepSpeech is designed to run fully offline (on-device). Once the model is downloaded, no internet connection is needed for transcription.