Jan is an open-source AI chat app that runs local AI models on your desktop for privacy, or connects to cloud models like GPT and Claude.

Jan is best for people who want to use AI offline with full privacy and control, without needing coding skills.

Do I need to install anything to use Jan?

Yes, you need to download and install Jan on macOS, Windows, or Linux to use it.

Yes, Jan is completely free and open-source with no subscription fees.

Does Jan offer a free trial or demo?

No, Jan does not offer a free trial or demo since it is fully free to download and use right away.

Does Jan have a plan for teams or businesses?

No, Jan does not have a plan for teams or businesses.

Does Jan offer an API or integrations?

Yes, Jan offers a local API server compatible with OpenAI and supports integrations with cloud providers like OpenAI, Anthropic, and Groq.

How do I contact Jan support?

Email hello@jan.ai for support.

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Jan

AI Infrastructure & MLOps

An open-source AI chat app for Windows, macOS, and Linux that runs local LLMs offline or connects to OpenAI, Anthropic, and more via API keys, with a localhost API.

Available Via:DesktopAPI

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Jan is an open-source desktop AI chat app for individuals who want a privacy-focused ChatGPT alternative that can run fully offline on Windows, macOS, and Linux.

Key capabilities include:

Run local LLMs offline by downloading open models (for example Llama 3, Gemma, Mistral) from Hugging Face or importing GGUF models
Connect to cloud AI providers (including OpenAI, Anthropic, Groq, and others) using API keys when local inference is not required
Use a chat UI with model parameter controls and session context, plus real-time web search
Expose an OpenAI-compatible local API (localhost:1337) powered by the Cortex engine, designed for integration with other tools (for example Continue.dev)

Pricing: Free (open-source). Model and cloud usage costs depend on local hardware and any third-party API billing.

What makes it notable: it supports 100% offline operation after setup, targets air-gapped and high-security environments, and avoids data telemetry and internet dependency while still offering optional cloud model connectivity.

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Frequently Asked Questions About Jan

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Who is Jan best for?

Do I need to install anything to use Jan?

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Does Jan offer a free trial or demo?

Does Jan have a plan for teams or businesses?

Does Jan offer an API or integrations?

How do I contact Jan support?

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