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Open-source offline assistant that can also connect to cloud APIs

Niche Free plan Open source

Choose it if you need an offline assistant that sends no data to the cloud; skip it if ChatGPT or Claude is enough.

Try Jan

This link goes to the official site, jan.ai. We do not earn anything from this click.

Home page of Jan
Home page of jan.ai on November 7, 2026. The service interface changes, and the name and logo belong to their owner.

About this service

A desktop app with offline chat on local models and the option to connect your own cloud API key. Focused on privacy. The source license is interpreted differently (AGPL-3.0 or Apache 2.0), so check the LICENSE file before use.

What you can do with it

  • offline chat for sensitive notes
  • hybrid: local model for data, cloud model for complex texts

Who it suits

  • privacy first
  • non-technical owners

Strengths

  • open source
  • offline mode

Limitations

  • smaller ecosystem
  • Ukrainian not verified

Integrations

  • local models
  • cloud APIs with your own key

Alternatives to Jan

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All services in “Assistants and research”

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