Private AI that never leaves your device
Atomic Chat is a private AI you run entirely on your own device — no cloud, no account, no logging. Your prompts and chats never leave your machine, and a private LLM works fully offline once downloaded.
to run locally
Run 1000+ models locally
What is private AI?
Private AI is a language model that runs entirely on your own device instead of a remote server. You download a model once, then it answers offline — nothing you type is sent to the cloud, logged, or used for training. Your data never leaves your machine.
Private by design, not by policy
Most “private” AI tools still send your prompts to a company’s server and just promise to keep them confidential. Atomic Chat runs the model on your device — so there’s nothing to send and nothing to trust.
Works completely offline
Turn off Wi-Fi and your private AI keeps working. After the one-time model download, every chat runs on-device — ideal for sensitive work, travel, or anywhere off-grid.
No account. No logging.
No sign-up, no cloud sync, no telemetry. There’s no server-side history of your conversations, because there’s no server involved at all.
The benefits of a private AI
Running AI on your own device isn’t just a privacy checkbox. It changes what you can safely do with AI — and who gets to see what you say.
Your data can’t leak if it never leaves
Cloud AI can be logged, subpoenaed, breached, or quietly used to train the next model. On-device AI has none of that surface area — your prompts and files never reach a server in the first place.
Use AI on data you’d never paste into the cloud
Legal documents, medical records, client data, private source code. If it can’t leave your company, it can’t go to ChatGPT — but it can go to a model running on your own machine.
No account, no subscription, no leash
Nothing to sign up for, no monthly bill, no rate limits, and no vendor tracking how you use it. You own the model and the software outright.
Private AI vs cloud AI
Cloud AI — even the “private” kind — runs on someone else’s servers. Atomic Chat runs on yours. Your data has nowhere to leak, because it never leaves the machine.
- Your data stays on your
device - No account, no logins, no tracking
- Works fully offline
- Free & open-source — audit the code
- Your prompts are sent to their servers
- Needs an account and an internet connection
- Chats can be logged or used for training
- Monthly subscription, with usage limits
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 — nothing leaves your device
Every message runs on your device. Nothing is logged, nothing is sent anywhere, and there are no limits.
What you can do with a private AI
Analyze a 50-page contract in one session
Paste the full document and ask questions throughout. The model doesn’t lose track of clause 3 by the time you reach clause 30.
Load an entire codebase as context
Point it at a full codebase — thousands of files, the whole project. Everything is processed locally, so your proprietary code never leaves your device.
Sensitive data never leaves your device
Some data can’t go to a cloud API — legal, medical, financial. A private LLM keeps it on your machine, so you can use a capable model without the risk.
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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