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Jan

Open-source offline ChatGPT alternative for the desktop

Local LLM Runners ★ 44.9k stars Easy setup AGPL-3.0

Jan is a desktop application that runs large language models fully offline on your computer. It provides a clean chat interface, a local API server, and the ability to connect to remote providers when desired.

Official siteSource code

Key features

  • Fully offline by default
  • Built-in local API server
  • Model hub browser
  • Privacy focused

Pros & cons

Strengths

  • Polished desktop interface
  • Fully offline chat
  • Local API server included

Trade-offs

  • Single-user desktop focus
  • Large models need RAM

Is Jan secure?

No known vulnerabilities affect Jan's latest release (v0.8.6). OSV.dev lists 1 past advisory for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

  • Most recent fixed advisory CVE-2026-66005, published 2026-07-24 (82 days ago), fixed in 0.8.4

Source: OSV.dev, checked 2026-10-14. How this is measured.

Jan replaces

Self-hosted ChatGPT alternatives

Health badge

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SelfHostIndex: 100 · excellent

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