leon

Free

🧠 Leon is your open-source personal assistant.

AI ChatbotsFreeFree tier

Inputs: text, audioOutputs: text, audio

Type

Open Source

Visit Website GitHub (17.2k stars)

About leon

Leon is an open-source personal assistant that can be self-hosted on a user's own server, giving them full control over their data and privacy. Built with a modular architecture, it allows users to extend its capabilities through packages or modules called skills, which can be created or installed to automate various tasks. Leon integrates with multiple text-to-speech (TTS) and speech-to-text (STT) cloud solutions, including Google Cloud, AWS, IBM Watson, and offline options like CMU Flite and Coqui STT, with additional providers such as Alibaba Cloud and Microsoft Azure listed as coming soon. The assistant leverages AI concepts like natural language processing (NLP) to facilitate human interaction, and it supports scheduled jobs via cron tasks, making it suitable for automating routine activities. As an open-source project under the MIT license, Leon encourages community contributions and is designed to be flexible and privacy-focused, with users deciding whether to use third-party services.

Key Features

Open-source and self-hosted on user's server for data privacy

Modular architecture with skills/packages for extensibility

Supports multiple TTS and STT cloud and offline solutions

AI-powered with NLP for natural language interaction

Cron-based scheduled tasks and automation

Community-driven development with GitHub sponsorship

CLI tool for easy installation and management

Pros & Cons

Pros

Full data privacy as it runs on user's own server
Open-source with permissive MIT license encourages customization
Modular design allows adding or creating skills easily
Supports multiple TTS/STT providers including offline options
Active community and roadmap for future enhancements

Cons

Requires technical knowledge to set up and maintain on a server
Free tier limits should be verified; self-hosting incurs server costs
Some features like certain TTS/STT providers are listed as coming soon
Dependence on community contributions for skill development
No built-in mobile app or web interface mentioned in available content

Best For

Automating daily tasks like news retrieval or remindersCreating a privacy-focused voice assistant for home automationDeveloping custom skills for specific workflows or hobbiesIntegrating with third-party services via TTS/STT for hands-free controlLearning and experimenting with open-source AI assistant development

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FAQ

Is Leon completely free to use?

Leon is open-source under the MIT license, so the software itself is free. However, self-hosting requires your own server, and using third-party TTS/STT services may incur costs. Exact pricing for those services should be verified on their respective pages.

Can I run Leon offline?

Based on available information, Leon supports offline TTS (e.g., CMU Flite) and STT (e.g., Coqui STT) options, allowing some functionality without internet. However, full offline capabilities depend on the skills and services you choose.

How do I install Leon?

Leon can be installed via its CLI tool using npm: `npm install --global @leon-ai/cli`, then run `leon create birth`. Detailed instructions are available in the official documentation.

What programming languages or skills can I use to extend Leon?

Leon's modular architecture supports creating skills, but the specific programming languages or frameworks are not detailed in the provided content. The project's GitHub repository should have more information.

Does Leon support voice activation or wake words?

The website mentions implementing a new hotword solution as a roadmap item, so current support for wake words should be verified in the documentation or GitHub issues.

Can I contribute to Leon's development?

Yes, Leon is open-source and welcomes contributions. You can sponsor the project on GitHub or contribute code, skills, or documentation. The project is led by Louis (GitHub: @louistiti).