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Jan

Open-source desktop app for running AI models on your computer

86.0score

Ranked 5 of 7 in best local LLM runners

An open-source desktop chat app for macOS, Windows and Linux that runs offline and can connect to cloud providers. It is a finished app rather than an engine, so it gives less developer control than llama.cpp.

Best for Offline chat on a personal computer

About Jan

Jan is a desktop chat app that presents itself as an open-source alternative to ChatGPT. Its download page offers builds for macOS, Windows and Linux, and the site describes it as a way to run AI on your own computer, with a local API server. It can run models locally or connect to cloud model providers.

The repository describes Jan as running 100% offline, and its acknowledgments list llama.cpp and Tauri among the projects it is built on. Jan is released under the Apache 2.0 license. Compared with llama.cpp, it is a finished desktop app rather than an engine, so it suits people who want a chat window and a local server without writing code.

Key features

  • Desktop app for three systems
  • Local API server
  • Offline model use
  • Cloud provider connections

Strengths

  • Apache 2.0 licensed with source on GitHub
  • Runs models offline on your own computer
  • Connects to cloud providers when wanted

Limits

  • Local speed depends on the computer's hardware
  • Smaller model catalog than a hosted service

Where Jan ranks

ListRankScoreBest for
Best Local LLM runners5 of 786.0Offline chat on a personal computer

Questions about Jan

Is Jan free?
Jan can be used without paying: Free and open source under Apache 2.0; cloud model connections are optional. Check the vendor’s pricing page for current limits.
Is Jan open source?
Yes. Jan publishes its source code under the Apache-2.0 license.
Which platforms does Jan support?
Jan is available on: macOS, Windows, Linux.
What is Jan best for?
Offline chat on a personal computer. In our ranking of local LLM runners it is number 5 of 7 with a score of 86.0.
What are the best alternatives to Jan?
The highest-ranked alternatives on listme.name are Ollama, llama.cpp, LM Studio, GPT4All.