Private AI for Secure Work
Everything runs on your own machine — no cloud, no uploads, no accounts.
Choose from 1,000+ open models
What is private AI?
Private AI is AI deployed with privacy and security built in. Models run locally on your machine, so your data stays private and never leaves your device.
Works offline
Download a model once and the app becomes fully autonomous
Secure environment
All chats, prompts and repositories belong to you — nothing is sent to the cloud.
No account
No sign-up, no email, no profile — the app never asks who you are.
Open and free
Your conversation costs nothing — run models privately for free, forever.
Safe for sensitive data
You can hand your files to AI freely, because there is no server
Runs on your devices
Mac, Windows or iPhone — the same private setup works on the hardware you already own, with models sized to fit it.
Own your data
Running private AI on your device gives you a secure space to work with confidential data.
Nothing leaves your device
Prompts, files and chats stay yours living on the disk.
No logging
Run models without login any accounts
Fully offline
You don't need t be online to use local
Never training data
Nothing you type trains someone else’s model.
Open and auditable
Anyone can inspect exactly what the app does.
Yours to keep
No subscription, no vendor who can revoke access.
Private AI vs Cloud AI
Private AI keeps your data secure by design.
- Your data stays on your device
- No account, no logins
- Works offline
- Free and open-source
- Your prompts are sent to server
- Require an account
- Requires Network Access
- Closed-source
Get your private AI in three steps
Download & install
Free for Mac, Windows, Linux, iPhone and Android. No account, no email.
Pick a model
Pick from 1000+ private models — Llama, Qwen, DeepSeek and more. Downloads once, then runs offline.
Chat privately
None of your data is sent to the cloud.
Download Atomic Chat
FAQ
Everything about running a private AI on your own device
Private AI is a language model that processes your data without exposing it to anyone else. With Atomic Chat the model runs entirely on your own device, so your prompts and chats never touch a server — private by design, not by policy.
Public AI like ChatGPT or Gemini sends your prompts to a company’s cloud, where they can be stored or used for training. Private AI keeps processing under your control. Atomic Chat goes furthest by running fully on-device, so nothing leaves your machine.
Yes. Atomic Chat is a free, open-source private ChatGPT alternative that runs local models on your device. No account, no cloud — it’s private because nothing is sent anywhere, not because of a promise.
The most private LLM is one that runs locally with no telemetry. Atomic Chat runs 1000+ open models — Llama, Qwen, DeepSeek, Gemma — entirely offline, and it’s open-source so you can verify there’s no data collection.
Yes. Atomic Chat is a secure AI chat and private AI chatbot — a PrivateGPT-style app that runs locally with no server, so every conversation stays secure on your own device with no logging.
Completely. After you download a model once, Atomic Chat runs with the internet off. Because the model lives on your device, it sends 0 bytes to any server — private and fully offline.
Any open model in Atomic Chat — Qwen, Gemma, DeepSeek, Llama, Mistral, Phi and more. You get 1000+ private models to run locally, downloaded once and used offline.
Yes. A local LLM runs on your own CPU or GPU, so every prompt and response is processed on your machine. Atomic Chat has no account and no telemetry, and it’s open-source under Apache-2.0 so you can audit exactly what it does.
Yes. Atomic Chat is 100% free and open-source under Apache-2.0, with no subscription, no message caps and no hidden costs. You own your private AI outright.
Built in the open
Follow the project, file issues, and chat with the people building Atomic Chat.
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