Jan AI
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.
Pricing
Free
Free plan
Yes
Category
Developer Tools
Platforms
3
Free plan
Yes
API access
Yes
Open source
Yes
Platforms
3
What is Jan AI?
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.
How Jan AI works
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.
What makes it worth shortlisting
The capabilities that matter most for teams evaluating Jan AI.
Local model chat
ChatGPT-style conversational interface for running open source AI models completely on local hardware with full privacy.
OpenAI-compatible API
Local server providing OpenAI-compatible API endpoints for connecting local models to compatible applications and extensions.
Open source transparency
Fully open source codebase allowing inspection, modification, and contribution without proprietary black boxes.
Best use cases
Who should use it
Pros
- Completely private — all processing on local hardware
- Free and open source with no subscription costs
- Graphical interface more accessible than Ollama command line
- OpenAI-compatible API server enables connecting local models to compatible applications
Cons
- Requires suitable hardware with sufficient RAM for quality models
- Less developer integration support than Ollama more mature CLI ecosystem
- Smaller community than LM Studio
Is it worth the price?
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
Tools like Jan AI
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.
Jan AI vs LM Studio
A side-by-side look at the closest alternative in this category.
Jan AI
Menlo Research
LM Studio
LM Studio
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.
- Completely private — all processing on local hardware
- Free and open source with no subscription costs
- Graphical interface more accessible than Ollama command line
- OpenAI-compatible API server enables connecting local models to compatible applications
- Graphical interface makes local AI accessible without command-line knowledge
- Discover and download models from Hugging Face without technical knowledge
- Provides a familiar chat interface identical to cloud AI tools
- Local server enables connection of existing OpenAI API apps to local models
- Requires suitable hardware with sufficient RAM for quality models
- Less developer integration support than Ollama more mature CLI ecosystem
- Smaller community than LM Studio
- Requires suitable hardware with sufficient RAM
- Smaller models run slowly on older hardware
- Model quality lags behind frontier commercial models
- Not suitable for non-technical users with insufficient hardware
Technical & deployment info
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
Security & privacy
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.
What users are saying
Verified reviews from signed-in users, stored in the backend and averaged into this tool's rating.
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Common questions about Jan AI
Editorial Verdict
Should you use Jan AI?
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.