Ask anything. Reveal nothing.

ChatGPT, Claude, Gemini, Mistral and every other AI, in one app. As your message is sent, your sensitive details are detected and replaced with made-up equivalents, on your computer. The AI works on that version. Your real details take their place back in the answer.

Installs in two minutes. Nothing to set up.

Who it’s for

For everyone who tells an AI things that are none of its business.

Doctors. A report, a prescription, a letter to a colleague or any other document: the AI works on the file without ever knowing who the patient is.Lawyers. Professional secrecy doesn’t stop at the door of a chatbot. Names, cases, amounts and anything else confidential stay in the office.Accountants. Statements, invoices, IBANs, amounts and everything else: the AI works on replaced figures. The real ones come back in the answer, and the totals still add up.Notaries. Parties, property, amounts and every other detail in a deed never leave the office.Sales teams. Clients, prices, terms and everything you negotiate don’t end up at OpenAI or Google.HR teams. Contracts, reviews, pay, letters or any other file: the AI drafts, without ever learning who it’s about.Finance. Credit files, closes, letters or any other file: clients, accounts and amounts are replaced as it is sent. The maths stays right.Companies. Your teams already use AI. Give them every AI in one app, at the level of protection you choose.Individuals. A lease, a letter to the tax office, a health question or anything personal: what concerns you is nobody’s business but yours.

How it works

Detect. Replace. Restore.

Draft the employment contract for Marie Dubois, employee 48213, starting 15 January.

Draft the employment contract for Claire Martin, employee 51907, starting 3 March.

What the AI receivesWhat you write
What you write

Draft the employment contract for Marie Dubois, employee 48213, starting 15 January.

What the AI receives

Draft the employment contract for Claire Martin, employee 51907, starting 3 March.

What the AI answers

Dear Ms Martin, please find attached your contract (ref. 51907), starting on 3 March…

What you read

Dear Ms Dubois, please find attached your contract (ref. 48213), starting on 15 January…

A name becomes another name, a date another date, an IBAN another IBAN, and so on for every sensitive detail. The AI can’t tell the difference and answers as usual. Your real information never leaves your computer: it slips back into the answer the moment it arrives.

How it’s built

Inside the app

You stay in control.

You choose what gets protected. You see what the AI received. Your files are covered like your messages.

Standard
Enhanced
Strict

You choose the level of protection.

Standard, Enhanced or Strict. One detail you’d rather leave visible? One click.

AI view
Draft the contract for Claire Martin, employee 51907…

You see what the AI received.

On every message, a button shows the version sent to the AI. Word for word.

patient-notes-0422.pdfPDF, 2 pages14 sensitive details protected

Your files too.

A PDF, a spreadsheet, an image or any other file: protected as it is sent, with a count of what was replaced.

Names12Contacts7IBANs and cards3Dates9

Kaviar counts. It keeps nothing.

How many names, dates, numbers, and so on. Never which ones.

The AIs

Every AI in one place.

ChatGPT, Claude, Gemini, Mistral, Grok, DeepSeek and every other: one app. Switch AI in one click. The protection doesn’t change.

With your Kaviar credits or your own API keys, as you prefer.

Privacy

Everything happens on your computer.

Kaviar is an app installed on your computer. The replacement happens there, and your real details never leave it. With your own API keys, the protected message goes straight to the AI. With Kaviar credits, it passes through our servers just long enough to be delivered, and is not kept. Either way, you keep using the AIs you are used to: they simply stop seeing what’s sensitive.

Read the Security page

The name

Kaviar, as in caviardage.

In French, caviarder is to draw a black line through what a document must not reveal. Kaviar makes the same move, without the line: the sensitive detail is replaced with another, plausible one, and the AI works as usual. You get the real one back in the answer.

Ask anything. Reveal nothing.

Two minutes to install. Nothing to set up.

Download KaviarSee team plans

Free to start, with the same protection on every plan. Pro and Teams add AI credits, unlimited documents and team management.