Jan

license

Apache-2.0(OSI)

source

public(github.com/janhq/jan)

self-host

primary(desktop app, 100% offline-capable)

core features withheld

no

Fully OSI-licensed (Apache-2.0), full source public, no proprietary feature-gated core, a true open chat UI. The LICENSE applies Apache-2.0 by reference with one added sentence asking that attribution appear in user-facing materials - a request, not a condition, which is why GitHub reports the repository as NOASSERTION rather than Apache-2.0.

• https://cdn.jsdelivr.net/gh/janhq/jan@main/LICENSE recorded 2026-09-29

  LICENSE file in the janhq/jan repository: "Licensed under the Apache License, Version 2.0" followed by "Attribution is requested in user-facing documentation and materials, where appropriate."

• https://cdn.jsdelivr.net/gh/janhq/jan@main/README.md recorded 2026-09-29

  Repository README titled "Jan - Open-source ChatGPT replacement" with a License section reading "Apache 2.0 - Because sharing is caring."; no paid, enterprise or hosted tier is mentioned.

• https://github.com/janhq/jan recorded 2026-08-13

  public source; Apache-2.0; v0.8.2 (1 Jun 2026)

• https://github.com/janhq/jan/blob/dev/LICENSE recorded 2026-08-13

  Apache-2.0 license text

Adoption is measured by cumulative downloads of the desktop app, as reported on the vendor's own homepage; GitHub stars corroborate but are not the basis. Because these are lifetime installs rather than active users, confidence stays medium.

• https://github.com/janhq/jan recorded 2026-08-13

  42.9k stars (corroborating)

• https://jan.ai/ recorded 2026-08-13

  5.7M+ downloads stated on vendor homepage

Jan Desktop combines local llama.cpp models with cloud providers, a local OpenAI-compatible server, MCP connectors, Projects with indexed files, custom assistants, and image and audio attachments for capable models. Its autonomous Cowork mode is still labeled a preview.

• https://github.com/janhq/jan recorded 2026-08-13

  feature set: local LLMs, cloud integration, custom assistants, OpenAI-compatible API

• https://jan.ai/ recorded 2026-09-29

  Homepage stating "Choose from open models or plug in your favorite online models." and listing OpenAI, Anthropic, Google, Mistral, Qwen, DeepSeek and Kimi as model providers, with v0.8.4 as the current release.

• https://jan.ai/docs/desktop/api-server recorded 2026-09-29

  Local API Server page: "a built-in, OpenAI-compatible API server that runs entirely on your computer" and the ready log "JAN API listening at http://127.0.0.1:1337".

• https://jan.ai/docs/desktop/file-upload recorded 2026-09-29

  File Upload page: "Attach images, audio, or documents directly to a single message in any chat." and Project files are chunked and indexed for retrieval; image input needs a vision model.

• https://jan.ai/docs/desktop/quickstart recorded 2026-09-29

  Quickstart page: "Jan runs models two ways, and you can mix both in the same app" (local or cloud provider), with Cowork (Preview), Projects, Assistants, Agents and Connectors (MCP) listed as app features.