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Replace today: ChatGPT Google Gemini Microsoft Copilot Perplexity

The Best Private AI Tools in 2026: Local & Hosted

Private alternatives to ChatGPT, Google Gemini, Microsoft Copilot, Perplexity, vetted against our public criteria.

Grouped by threat level

Covered Easy start and good defaults for everyone
Hardened Some setup and real gains for the willing

Mainstream AI assistants log your prompts, can train on what you type, and tie every conversation to your account. There are two private ways out, and both are below. Hosted assistants still send your prompt to a server, but to providers that contractually do not train on your chats and keep little or nothing. Local tools run an open model directly on your own machine, so the text never leaves your computer and works with no account and no internet. The picks run from the easiest swap to the most private, so you can choose how far you want to go.

Hosted or local: how far to go

A hosted assistant is the one-click replacement. Your prompt still travels to a server, so you are trusting a provider’s no-training pledge and its retention settings, but a good one collects almost nothing and operates under privacy-friendly law. A local model is the stronger posture: inference happens on your device, there is no server to log, leak, or train on what you type, and it keeps working with the network off. The trade is convenience and raw capability for control. Both map onto our threat levels: the hosted picks sit at Covered, the local runners at Hardened.

What to look for

For a hosted assistant, the provider’s commitments are what protect you: a clear no-training pledge, minimal logging, no advertising profile built from your questions, and ideally an open-source client and a strong privacy jurisdiction. For a local tool, look for one that runs open-weight models offline, is itself open source, and does not phone home. Hardware matters for the local route, since bigger models want more RAM and a capable GPU, so start with a smaller model and scale up to what your machine handles comfortably.

How to switch

Point your everyday questions at one of the hosted picks and use it the way you used the mainstream tool. For anything sensitive, drop down to a local model where the text never leaves your computer. The honest catch is that the largest mainstream models still lead on the hardest problems, so you may keep one mainstream account for those, and simply stop feeding it the rest of your life.

Frequently asked

Private AI: should I pick a local or a hosted tool?
Start hosted. A no-log hosted assistant is a one-click swap for ChatGPT and keeps your prompts out of a training set. Drop down to a local model, where nothing leaves your machine at all, for anything you would not want sitting on someone else's server.
Are these as capable as ChatGPT?
For everyday writing, questions, and coding help, yes. The very largest mainstream models still lead on the hardest tasks, so some people keep one mainstream account for those and route everything else through a private tool.
Do the local ones work without internet?
Yes. Once you have downloaded a model it runs entirely on your own machine, fully offline, with no account and nothing sent anywhere.