Name: Jan
Author: Menlo Research Pte. Ltd.

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Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

Features

Local AI models: Run LLMs such as Llama, Gemma, Qwen and others on your device
Optional cloud access: Connect to services like OpenAI, Anthropic, Gemini and Groq when internet-based models are required
Custom assistants: Create tailored assistants for writing, coding, summarizing and more
OpenAI-compatible API: Includes a local API server at localhost:1337 for tools expecting the OpenAI format
MCP support: Integrates the Model Context Protocol for enhanced workflows and tooling
Privacy-aware design: Jan works offline by default. Cloud access is optional and user-controlled

Jan is actively maintained by Menlo Research. Feedback, bug reports and feature requests are welcomed through GitHub.

A security update to 0.8.7: links in chat open in your browser, the local API checks where browser requests come from (Trusted Hosts), and several file, path and shell-profile checks are tightened; updates the llama.cpp engine to 0.7.0 and fixes local models on Windows user names with non-English characters