An open-source ChatGPT-alternative that runs AI models locally on your computer. Clean desktop chat UI for local models Read our hands-on review and

Overview

Jan is an chat, productivity tool designed to help users accomplish specific tasks more efficiently. You can access it at https://jan.ai. Users typically choose this tool because it excels at “Clean desktop chat UI for local models”; it excels at “Works fully offline”. However, be aware that performance bound by local hardware.

Key Features

  • Local-first chat with open models — enables natural conversation and Q&A.
  • Built-in model hub — handles multi-turn dialogue effectively.
  • Threads, personas and plugins — works well for research and brainstorming.
  • Optional cloud model connections — enables natural conversation and Q&A.

Pricing

PlanPriceFor
Free$0Everyone

Pricing is subject to change. Check the official website for current plans and regional discounts. Free tiers often have usage limits — evaluate whether those limits match your expected volume before committing.

Comparison

vs. Chatgpt: Against Chatgpt, Jan distinguishes itself in areas like response quality, ecosystem depth, and free-tier generosity — your choice depends on whether you prioritize breadth or specialization.

vs. Claude: Against Claude, Jan distinguishes itself in areas like response quality, ecosystem depth, and free-tier generosity — your choice depends on whether you prioritize breadth or specialization.

Getting Started

  • Open a fresh conversation and give Jan context about what you’re working on — background information dramatically improves response quality.
  • Break complex requests into steps rather than dumping everything in one message — iterative prompting yields better results.
  • Use the conversation history or memory features to maintain context across a long working session.

Hands-on Verdict

Jan is the desktop app I use to run open LLMs locally with a ChatGPT-like UI — pick a model, chat offline, and keep data on your machine. It’s more local than HuggingChat on privacy and a friendlier UI than Ollama alone. For a dev workflow I use Ollama.

Who it’s for: privacy-minded users, devs. Tip: download a quantized model sized to your RAM — Jan runs fully offline, so matching the model to your hardware keeps responses snappy.

Compare alternatives

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Jan (this) chat, productivityFree $0 Site ↗
ChatGPTchat, write, codeFree $0 · From $20/mo Site ↗
Claudechat, write, codeFree $0 · From $20/mo Site ↗
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Editor’s Review
4.1/5
Pros
  • +Clean desktop chat UI for local models
  • +Works fully offline
  • +Connects to cloud models too
Cons
  • Performance bound by local hardware
  • Smaller model library than Ollama

A friendly desktop shell for local models. Good for privacy-minded users who want a ChatGPT-like experience without the cloud.

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Last updated: 2026-07-31

When to use it

  • Use it when you need clean desktop chat UI for local models
  • Use it when you need works fully offline
  • Use it when you need connects to cloud models too

When to skip it

  • Avoid it if performance bound by local hardware
  • Avoid it if smaller model library than Ollama

Alternatives to consider