Use AI without exposing your data.

Kaviar automatically finds and masks sensitive information in your exchanges with ChatGPT, Claude or any other AI. No more choosing between performance and privacy.

Download for MacWindows and mobile app · coming soon

One app for all your AIs.

OpenAIAnthropicGeminiMistralDeepSeekGrokOpenRouter
The problem

You share more with AI than you think.

Names. Emails. Addresses. Customer data. In every interaction, sensitive information can slip through without you realizing it.

Draft the employment contract for Rémi Duval from the following details: Address: 18 rue des Lilas, 33000 Bordeaux Social security no.: 1 84 06 33 118 042 21 Email: remi.duval@example.com

The solution

With Kaviar, use AI without thinking about what you share.

You change nothing about your habits. Kaviar slips in between the moment you send and the moment the AI receives, then restores everything in your answer.

Use AI, just like usualAsk whatever you want, to the AI of your choice, with no extra step.
The question we get asked most

Does Kaviar see my data? No.

Everything happens on your device, in the desktop app and in the browser alike. Protection runs on your side, not on a server. Your confidential information is never sent anywhere: not to Kaviar, not to the AI.

Stays on your device
  • Your messages, as you write them
  • Your documents, PDFs and images
  • Your Vault and protection rules
  • Your conversations, routines and connectors
  • The real values, restored in the replies
What Kaviar receives
  • Your account email
  • The number of messages and credits used
  • The app version you're running

That's all. Never a message's content, never a name, never a document. If you enable sync (Pro), we only store an end-to-end encrypted copy we cannot read.

Desktop or browserSame protection, same place: on your side.
Turn off the internetDetection and replacement still work: they don't depend on any server.
Via Kaviar or your API keysIdentical. Only the route of the already-protected message changes.
Trust

Privacy, thought through to the end.

Your sensitive data never leaves your computer.

It's detected and replaced directly on your computer, without being sent to Kaviar or to the AI.

Automatic detection for peace of mind. The Vault for control.

Over 99% of sensitive information is caught on its own, without you having to think about it: 8,000+ cases verified across 8 languages, including an independent test set generated by a third-party AI. And if something slips through, you stay in control: select the text to protect it in one click, or add it to the Vault so it is always protected.

You set the rules.

Freely adjust the level of protection and customize its rules to fit your needs.

Benefits

Built for everyday use.

All the AIs. No trade-offs.

Access 400+ AIs, including the most popular ones, directly from Kaviar.

Privacy, without thinking about it.

Use AI freely, without checking every message before you send it.

Free. And it'll stay that way.

Your messages are protected without limits, even on the free version.

Beyond privacy

Come for privacy. Stay for control.

Your routines and your context live in Kaviar, not inside one AI. Work with whichever you want, whenever you want, and everything follows.

  • No lock-inKaviar favours no AI. Switch between two messages, or never: your call.
  • Your routines, everywhereYour prompts, chains and connectors: saved once, available with every AI.
  • Context that follows youIt builds up as you work, inside Kaviar. Every AI benefits from it, from the very first message.
Where does your data go?
Your computer
You writeRémi Duval, 18 rue des Lilas, Bordeaux
Kaviar detects and replaceshere, on your machine, before anything is sent
Its reply comes back, Kaviar restores your real dataon your screen only
Your machine's boundary
The AI, outside
The AI only receives stand-ins“Hugo Morel, 7 rue des Ormes, Toulouse”
Via Kaviar: the already-protected message travels through our servers to the AI. We keep nothing, except your credit usage.
Via your API keys: the already-protected message goes straight from your machine to the provider (OpenAI, Anthropic…). Kaviar never sees it.

Either way, the protection is identical. An API key doesn't change who sees your data — only who pays for the AI.

FAQ

Frequently asked questions

Which AIs can I use with Kaviar?
400+ AIs, including the most popular ones — OpenAI, Anthropic, Google, Mistral, DeepSeek, xAI, OpenRouter — directly from Kaviar, in a single thread.
If I add my API key, does my data leave my computer?
No. Detection and replacement always happen on your computer, before anything is sent. Your key only changes the route of the already-protected message: it goes straight from your machine to the provider (OpenAI, Anthropic, Google…) instead of passing through Kaviar. Either way, the AI only receives plausible stand-ins, and your real data only reappears on your screen.
Can I connect Kaviar to my other apps?
Yes — 60+ connectors. Plug in Gmail, Google Drive, Notion, Slack, Intercom, GitHub, Linear and many more to use them directly with your AIs, without ever leaving Kaviar.
Can I keep my habits and context in Kaviar?
Yes. Your memory, skills and workflows are centralized in Kaviar and follow you, whichever AI you use.
Can I switch AIs mid-conversation?
Yes. Switch from one AI to another at any time: Kaviar keeps your conversation context so you can pick up right where you left off.
How does Kaviar protect my sensitive information?
Kaviar detects it automatically — over 99% in our tests (8,000+ sensitive items, 8 languages, including an independent test set generated by a third-party AI) — and replaces it with fictional data before it reaches the AI; the original values are then restored in the response. Beyond detection, the Vault puts you in control: you add your own data to protect, so nothing that matters to you is left to chance.
Can Kaviar see my sensitive information?
No. Detection and replacement happen directly on your computer. Protected information is sent neither to Kaviar nor to the AI.
What if Kaviar misses a piece of sensitive information?
You're always in control. Adjust the level of protection and customize your rules to tell Kaviar what to protect or leave in the clear.
Where are my conversations and settings stored?
On your computer, and nowhere else: conversations, routines, connectors and your Vault are never sent to Kaviar. That is what keeps your data private, but it has one consequence: if the place where they are stored gets wiped, they cannot be recovered.

With the desktop app (recommended), everything lives in a folder on your computer, like any other software: your data stays there until you delete it.

With the web version, everything lives inside your browser. It works well, but be careful: if you clear your browser data (cache, history, “clear everything”), use private browsing, or the browser cleans up on its own, you lose your history, your routines and your connectors. To keep everything safe, prefer the desktop app, or turn on end-to-end encrypted sync (Pro plan), which keeps a copy Kaviar cannot read.

What about my phone? The web version works on mobile, with the same rule: everything stays in the phone's browser. Two precautions. First, each browser is a separate space: what you do in Safari does not show up in Chrome, nor on your computer (unless you use encrypted sync, Pro plan). Second, on iPhone, Safari automatically wipes the data of a site you have not opened for 7 days. To avoid this, add Kaviar to your Home Screen (Share → “Add to Home Screen”): it then behaves like an app and your data is no longer deleted automatically.
Is Kaviar really free?
Yes. Kaviar protects your messages without limits, for free. Only the AI that answers you has a cost: €1 of credits is on us at sign-up to try every AI, then you choose: Kaviar credits (one button, every AI), your own key from a provider (Google offers a free tier, no card), or OpenRouter, a third-party service. See the keys guide (2 min). Paid plans add advanced features, notably for documents, teams and businesses.

AI, without your data in exchange.

Download Kaviar for free

Free · Mac · Windows and mobile coming soon

Kaviar — AI without handing over your data