Menlo Research / jan.ai
Open source desktop application for running AI models locally with a ChatGPT-like interface, supporting offline inference on Mac, Windows, and Linux without internet or cloud services.
Free plan
Yes
API access
Yes
Open source
Yes
Platforms
3
Jan is an open source desktop AI application providing a clean chat interface for running AI language models completely locally. Similar to LM Studio but fully open source, Jan allows downloading and running models from Hugging Face through a graphical interface without command-line knowledge. Jan also provides an OpenAI-compatible local API server for connecting local models to compatible applications. All processing happens on the user own hardware with no data leaving the device.
Jan AI runs as llm runtime software built around text and code workflows. Users typically start with a prompt, upload, or connected data source, and the underlying model handles the heavy lifting before returning a result you can refine or export. It's available on mac, windows, and linux, with API access for teams that want to embed it into their own products.
The capabilities that matter most for teams evaluating Jan AI.
ChatGPT-style conversational interface for running open source AI models completely on local hardware with full privacy.
Local server providing OpenAI-compatible API endpoints for connecting local models to compatible applications and extensions.
Fully open source codebase allowing inspection, modification, and contribution without proprietary black boxes.
Completely free and open source. No subscription. Requires your own hardware. No API costs for local models.
Model
Open Source
Starting price
Free
Free trial
No
LM Studio is a direct competitor with different graphical interface. Ollama is the command-line standard for local model running. GPT4All is another local AI desktop alternative.
A side-by-side look at the closest alternative in this category.
Jan AI
Menlo Research
LM Studio
LM Studio
Key facts about model providers, platforms, and team support.
Model Provider
Meta, Mistral AI, Microsoft, Google, Open Source
Models
Llama, Mistral, Phi, Gemma, Any GGUF model
Platforms
Mac, Windows, Linux
Deployment
Desktop, Open Source
Integrations
Any OpenAI-compatible client, Hugging Face
Team Collaboration
No
Launch Year
2023
Compliance signals and data-handling notes as reported by the vendor.
Open source codebase. All processing on local hardware. No data sent to external servers.
All AI processing occurs on local hardware. No data leaves your device.
Editorial Verdict
Jan is a strong alternative to LM Studio for users wanting a graphical interface for local AI models with open source transparency. Ollama is preferred by developers wanting command-line integration.
Last verified July 24, 2026.
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Completely free and open source. No subscription. Requires your own hardware. No API costs for local models.
Free to download and use. No subscription. Requires your own hardware. No API costs for local models.
Open source codebase. All processing on local hardware. No data sent to external servers.
Complete data privacy as all processing happens on local hardware. No data sent to external servers. No third-party data handling.
All AI processing occurs on local hardware. No data leaves your device.
All AI processing occurs on local hardware. No data leaves your device. No third-party data handling or privacy considerations beyond your own hardware.
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