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Sourced answers · Hosted in France · Free to start

Create your AI assistant from your documents, in 2 minutes.

Drop your PDFs, Word files or notes. Kopik turns them into an assistant that answers with its sources and never makes things up. Share it, add it to your website, or sell it.

Create my assistantExplore the assistants

Three ways to use it

One assistant, wherever your questions are

  • For you or your team

    Private

    An internal assistant for HR policies, procedures or product docs. Nobody digs through the shared drive anymore: they ask.

    • Invite by email or by link
    • You pay, or your guests do
    • Your documents stay private

  • For your customers

    On your website

    A chat bubble that answers your customers from your own documentation, day and night, and tells you what it couldn't answer.

    • One line of code to paste
    • Your colors, your logo
    • Only on the domains you allow

  • For your expertise

    Public and paid

    Publish your expertise in the Kopik catalogue. Every question asked by a subscriber or an AI agent earns you money.

    • Listed and searchable
    • Paid on every question
    • Bank transfer on request

How it works

Three steps, no code

  1. Documents

    Drag and drop PDF, Word, TXT, Markdown, CSV or HTML, or reuse an existing base. Indexing takes seconds and you watch it happen.

  2. Personalization

    Name, avatar, color, instructions (tone, scope, language), welcome message and suggested questions. A live chat preview shows the result as you type.

  3. Sharing

    Choose who can use it, then copy the link, the widget code or the API key. A dashboard shows the conversations and the questions without an answer.

Create my assistant

What you get

A production RAG pipeline, without building one

Retrieval-augmented generation is how you make an AI answer from your documents instead of guessing. Kopik runs the whole pipeline so you can focus on the knowledge.

  • Automatic ingestion

    Text extraction, chunking into overlapping passages and full-text indexing on every upload, tuned to the document language you choose (English, French, German, Spanish and more).

  • Smart retrieval

    Before searching, a language model expands each question into keywords and synonyms in your documents' language, so the right passage surfaces even when the wording, or the language of the question, differs.

  • Sourced answers

    Answers are written only from the retrieved passages and cite them. If the base doesn't cover it, it says so.

  • REST API & MCP server

    Every base is an endpoint. Plug it into Claude, Cursor, ChatGPT or your own agent with one API key.

  • Your private RAG

    Keep a base private and query it from the web, the API or MCP with your own key, for free. A RAG backend for your agents, with nothing to host.

  • Built for agents

    Set a maximum price per call so a looping agent never pays more than planned. Base content comes back flagged as untrusted data, never as instructions.

The catalogue

Explore the assistants

Public assistants built by people who know their subject: law, HR, tax, environment and more. Every answer cites its sources.

Most queried right now

Whole catalogue →

Three ways to run your assistant

Make it public and earn money, keep it private and let your users pay you, or keep it private and pay for your users' questions yourself.

Public

Earn money

  • Listed in the Kopik library, open to everyone
  • People pay to use it: you earn 70% of every paid question
  • Free to create, with a share link and a website widget
  • See what people ask, and what went unanswered

Private, your users pay

Earn money

  • Only the people you invite, by email or link
  • They pay to use it, and you earn 70% of every paid question
  • Free for you

Private, you pay

€0.05 per question

  • You pay for your users' questions, from prepaid credit
  • Your guests and your website visitors ask for free
  • Set a monthly cap so you never overspend
  • Credit never expires

Asking questions in the library: 1 free question a month, then the subscription (€12 a month) or credit. Agents (API, MCP): the price shown on each base. Developer docs

RAG API · MCP

Plug your AI agents into expert knowledge.

Every knowledge base can be queried over a REST API or through Kopik's MCP server, from Claude, Cursor, ChatGPT or your own agent. Same credit, same price, same cited answers. Cap the price of each call, get clear error codes, and query your own private bases for free: a RAG API the moment you upload.

Read the developer docs
curl https://kopik.io/api/v1/bases/<slug>/query \
  -H "Authorization: Bearer $KOPIK_KEY" \
  -H "Content-Type: application/json" \
  -d '{"question": "What notice period applies to a resignation?"}'

Quick answers

What is a Kopik assistant?

An assistant is one of your knowledge bases plus a configuration (name, avatar, instructions, welcome message, suggested questions) and ways to reach it: a share link, a widget for your website, the API and MCP. It answers only from your documents, cites its sources, and says so when they don't cover the question.

How do I add the assistant to my website?

Choose the "Private · you pay for your users" mode, add your domain to the allowed websites, then paste the one-line script tag before </body>. A chat bubble appears in the corner of your pages. You can also embed a full-page chat with an iframe. The widget refuses to open on any other website.

Who pays for the questions?

You choose when you create the assistant. Public: listed in the catalogue, the people asking pay (free questions, then a subscription or credit) and you earn on every question. Private, paid by your guests: same thing, for the people you invite. Private, paid by you: your guests and your website visitors ask for free, and each question (€0.05) is taken from your prepaid credit, with a monthly limit if you want one.

What is a RAG knowledge base?

RAG (retrieval-augmented generation) means the AI first retrieves the relevant passages from a set of documents, then writes its answer from them. A Kopik knowledge base is your documents, split into passages and indexed, ready to answer questions with sources.

How do I build a knowledge base from my documents?

Create a free account, give your base a title, a topic and its document language, then upload your files: PDF (with selectable text; scanned PDFs can't be read), Word .docx, TXT, Markdown, CSV, TSV, JSON, HTML or XML, up to 4 MB each. You can also paste text. Kopik indexes them in seconds, and the base grows with every upload.

How are creators paid?

A fixed amount for every subscriber question asked to your base in the chat, and 70% of the price of every paid request from an agent (REST API or MCP). Earnings become payable 90 days after the question (to cover payment disputes) and are paid by bank transfer on request.

Does my knowledge base have to be public?

No. It can be listed in the catalogue, unlisted (reachable only through its link, which contains a long random identifier) or private, visible to you alone.

Can I use Kopik as a private RAG for my own agents?

Yes. Make a base private, create an API key, and query it from the web, the REST API or MCP. Questions to your own bases are free (fair use: 200 a day). No vector database, no pipeline, no server to run.

How much does it cost?

In the chat, 1 question is free every month with an account and a verified email. After that, the subscription (€12 a month, no commitment) opens every base in the library, with monthly usage included and shown as a gauge. Agents and apps querying via API or MCP pay per request, at the price shown on each base, from prepaid credit topped up by card (€10, €25, €50, €100).

Is prepaid credit refundable?

Credit never expires but is not refundable. The one exception is the legal right of withdrawal: within 14 days of purchase, as long as you haven't asked a paid question since. Before paying, you confirm you want immediate access and that your first paid question ends that right.

What if the base doesn't have the answer?

The answer says so plainly, and a question that finds nothing relevant is not billed, nor is one that fails for a technical reason. You only pay for answers drawn from the documents.

Do creators see my questions?

Creators see the text of the questions asked to their bases, and which ones found nothing, but never who asked. It's how they improve their base. So avoid putting personal details in them.

How do I query a base from Claude, Cursor or another agent?

Create an API key in your dashboard, then connect Kopik's MCP server or call the REST API. You can set a maximum price per call, and the developer docs have copy-paste examples.

Your documents have answers. Let them speak.

Create your assistant for free in two minutes, then share it, put it on your website or publish it in the catalogue.

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