# ChatterLab

> ChatterLab is an EU-hosted platform for building AI chat agents: chatbots that answer a website's visitors from that business's own content, say how sure they are, and tell visitors they are talking to an AI, as the EU AI Act requires. Built for businesses, web studios and agencies.

ChatterLab is run by SRI Group BV, Antwerp, Belgium (https://chatterlab.ai). Its interface is in English, Dutch, French, German and Spanish, and an agent answers in the visitor's language.

## Key facts

- Knowledge: a website (crawled, or read from its sitemap, including the PDF files it links to), uploaded files (PDF, Word and text), texts, and question-and-answer pairs.
- On a site: a chat widget added with one script tag, or an iframe.
- Every answer is recorded with the pages it drew on and a confidence score: whether the content held the answer. A confident answer is also checked for grounding: whether the answer is supported by those pages. The business sees both in its dashboard, and the answers that were weak are listed so they can be fixed. Visitors see the answer, with a link when it comes from a PDF on the site.
- Data: the application, the database and file storage run in the European Union, and answers are written by models reached through a European provider. Two steps run in the United States under data-processing terms: turning text into search vectors (OpenAI, which does not train on it) and sending e-mail (Resend). A data processing agreement is available on request.
- EU AI Act: every widget says it is an AI (Article 50), and every answer is marked as AI-generated in the page's code. High-risk uses (recruitment, credit scoring, healthcare) are refused when an agent is created, except on Enterprise, which is agreed with us individually.
- Branding: your own name, colour and logo on every plan, the free one included. The "Powered by ChatterLab" badge comes off with an add-on at €49 a month on any paid plan.
- Follow-up: contact details collected in the chat and tickets answered by e-mail (paid plans), and appointments booked through Calendly.
- Developers: a REST API and an MCP server, so that an assistant such as Claude can set agents up.
- Agencies: clients with usage per client, a monthly report for each client in their language, a read-only dashboard per client, your own domain.

## Plans

Prices in euro, excluding VAT, per workspace rather than per seat. One credit is roughly one standard message.

- Free: €0 a month, 100 credits a month, 1 agent, basic models only.
- Starter: €29 a month, 1,500 credits a month, 1 agent, every model, contact details and tickets.
- Studio: €79 a month, 4,000 credits a month, 1 agent, every model, contact details and tickets, files uploaded by visitors, your own domain, the API and MCP.
- Agency: €249 a month, 12,000 credits a month, 5 agents, every model, contact details and tickets, files uploaded by visitors, your own domain, the API and MCP, a team of 5, client tools, the site read again every week.
- Enterprise: custom pricing, unlimited credits a month, unlimited agents, every model, contact details and tickets, files uploaded by visitors, your own domain, the API and MCP, a team of unlimited, client tools, the site read again every week, a dedicated EU region and an SLA.

## Pages

- [What an AI chatbot costs with ChatterLab](https://chatterlab.ai/en/pricing): Free, Starter €29, Studio €79 or Agency €249 a month, per workspace and not per seat, excluding VAT. Your own branding on every plan.
- [A free AI chatbot for your website](https://chatterlab.ai/en/free-ai-chatbot): Put a free AI chatbot on your website: 100 credits a month, one agent trained on your own pages, in your own branding and hosted in the EU. No card needed.
- [Train an AI chatbot on your own data](https://chatterlab.ai/en/train-ai-chatbot-on-your-data): Train an AI chatbot on your website, its PDFs, Word files and your own Q&A, without code. You see which pages every answer drew on. Hosted in the EU.
- [A GDPR-compliant AI chatbot, hosted in the EU](https://chatterlab.ai/en/gdpr-compliant-ai-chatbot): An AI chatbot for your website with its data in the EU, no cookies, no stored IP addresses and an honest list of the two steps that run in the US.
- [The EU AI Act and your website chatbot](https://chatterlab.ai/en/eu-ai-act-chatbot): Since 2 August 2026, a chatbot in the EU must tell people they are talking to an AI. What Article 50 asks of your website chatbot, and a checklist.
- [White label AI chatbots for agencies](https://chatterlab.ai/en/white-label-ai-chatbot): Sell AI chatbots under your own brand: your own domain, usage per client, a monthly report in each client's language and a read-only client dashboard.
- [A Chatbase alternative for European businesses](https://chatterlab.ai/en/chatbase-alternative): Looking for a Chatbase alternative with your data in the EU? Compare plans, euro prices, white label and the AI Act notice, as checked on 10 October 2026.

## Docs: Start

- [What ChatterLab is](https://chatterlab.ai/en/docs/start/introduction): A chat agent that answers your visitors from your own content, says how sure it is, and runs in the EU.
- [Your first agent in ten minutes](https://chatterlab.ai/en/docs/start/quick-start): From an empty workspace to a widget on your site that answers from your own pages.
- [How an answer is made](https://chatterlab.ai/en/docs/start/how-an-answer-is-made): What happens between a visitor's question and the agent's reply, and where the two quality numbers come from.

## Docs: Knowledge

- [Websites](https://chatterlab.ai/en/docs/knowledge/websites): How the crawler reads your site and the PDFs it links to, what it skips on purpose, and what to do when pages are missing.
- [Files](https://chatterlab.ai/en/docs/knowledge/files): Which documents an agent can read, what happens to them, and the one kind of PDF that silently teaches it nothing.
- [Text and Q&A](https://chatterlab.ai/en/docs/knowledge/text-and-qa): The two sources you type yourself, and why a question-and-answer pair is the most precise fix there is.
- [Limits and freshness](https://chatterlab.ai/en/docs/knowledge/limits-and-freshness): How much an agent can hold, what counts towards it, and how to keep what it knows up to date.

## Docs: Answers

- [Writing instructions](https://chatterlab.ai/en/docs/answers/instructions): What belongs in an agent's instructions, what does not, and the rules no instruction can switch off.
- [Models and credits](https://chatterlab.ai/en/docs/answers/models-and-credits): Which model writes the answers, what an answer costs, and what happens when the credits run out.
- [Retrieval settings](https://chatterlab.ai/en/docs/answers/retrieval-settings): The two settings that decide which passages the model gets to see, and when to touch them.
- [Confidence and grounding](https://chatterlab.ai/en/docs/answers/confidence-and-grounding): The two measurements on every answer, what each one can and cannot tell you, and how to read them together.
- [Testing in the Playground](https://chatterlab.ai/en/docs/answers/test-environment): Try questions, instructions and models before a visitor does, and know what testing costs.
- [Fixing weak answers](https://chatterlab.ai/en/docs/answers/fixing-weak-answers): A fixed order of steps for turning a bad answer into a good one, starting with the cheapest fix.

## Docs: Widget

- [Install the widget](https://chatterlab.ai/en/docs/widget/install): One script tag puts the chat on your site. What it does to your page, what it stores in the browser, and the options you can set on the tag.
- [WordPress](https://chatterlab.ai/en/docs/widget/wordpress): Put your agent's chat on a WordPress site with the ChatterLab plugin, without touching your theme. The plugin is not in the WordPress plugin directory yet.
- [Appearance](https://chatterlab.ai/en/docs/widget/appearance): Make the widget look like it belongs on your site. Every setting, what it changes, and how logos are cropped.
- [Greeting and nudge](https://chatterlab.ai/en/docs/widget/proactive): Two short messages beside the chat button that invite a visitor to ask. When each one appears, what it needs, and how your site passes the consent the second one needs.
- [Allowed domains](https://chatterlab.ai/en/docs/widget/allowed-sites): Decide which websites may show your agent, so that nobody else can embed it and spend your credits.
- [Signed-in visitors](https://chatterlab.ai/en/docs/widget/signed-in-visitors): Tell the agent who a signed-in visitor is and what it should know about them, signed by your server so that nobody can pretend.
- [Languages and the AI notice](https://chatterlab.ai/en/docs/widget/languages-and-disclosure): Which language the widget speaks, how to run one agent on a multilingual site, and the one line that can never be removed.
- [Files from visitors](https://chatterlab.ai/en/docs/widget/attachments): Let visitors send a document or a picture with their question, what the agent does with it, what it costs and how long it is kept.
- [Actions](https://chatterlab.ai/en/docs/widget/actions): Let your agent show a button under an answer, such as one that calls your customer service, and say in your own words when it should.

## Docs: Channels

- [E-mail](https://chatterlab.ai/en/docs/channels/email): Your agent answers the mail your customers send to your own address. What it is sure of, it sends; the rest your team answers from a ticket, with the agent's draft. Being tested, and not open to every workspace yet.

## Docs: Follow-up

- [Activity](https://chatterlab.ai/en/docs/follow-up/activity): Read every conversation your agent has had, with the sources and the confidence behind each answer, and export them as a PDF.
- [Leads](https://chatterlab.ai/en/docs/follow-up/leads): A form in the chat where visitors leave their contact details. What it asks and when, where the details go, how long they are kept, and what the law asks of you.
- [Tickets](https://chatterlab.ai/en/docs/follow-up/tickets): A visitor hands their question to your team in the chat, and your team answers by e-mail. Switching it on, what the visitor sees, replies both ways, limits and retention.
- [Overview](https://chatterlab.ai/en/docs/follow-up/analytics): What each figure on an agent's Overview counts, how the quality bands are drawn, and how to read the two lists that tell you what to fix.
- [Visitor feedback](https://chatterlab.ai/en/docs/follow-up/feedback): The thumbs under each answer, where the ratings show up, and how much weight to give them.

## Docs: Integrations

- [Booking with Calendly](https://chatterlab.ai/en/docs/integrations/calendly): Let a visitor book a call or an appointment without leaving the conversation. What the agent does, what Calendly does, and what gets recorded.
- [Helpdesks](https://chatterlab.ai/en/docs/integrations/helpdesks): Send your agents' tickets to Freshdesk, Zoho Desk or Zendesk instead of keeping them in ChatterLab. Being tested, and not open to every workspace yet.

## Docs: For agencies

- [Clients](https://chatterlab.ai/en/docs/agencies/clients): Record which agent you run for which client, what you agreed, and how they hear from you each month.
- [Reports and the client's dashboard](https://chatterlab.ai/en/docs/agencies/monthly-report): What your client receives each month, the dashboard its link opens and how they choose a period, how to add a personal note first, and what the client can and cannot see.
- [Your own domain](https://chatterlab.ai/en/docs/agencies/own-domain): Serve the widget and client reports from your own hostname, and send report e-mails from your own address, so that nothing names ChatterLab.
- [Running agents as a service](https://chatterlab.ai/en/docs/agencies/managed-service): A working method for agencies. What to set up per client, what to charge for, and how to keep a dozen agents good without it eating your week.

## Docs: Workspace

- [Plans and credits](https://chatterlab.ai/en/docs/workspace/plans-and-credits): What each plan includes, how credits are counted, the add-ons, and what happens when you reach a limit or change plans.
- [Team members](https://chatterlab.ai/en/docs/workspace/team): Invite colleagues into your workspace, what each role may do, and how invitations, seats and leaving work.
- [Workspace settings](https://chatterlab.ai/en/docs/workspace/settings): The workspace's name, which client reports and the e-mails about leads are sent in, and its language. What each one changes, and who can change them.

## Docs: Developers

- [API overview](https://chatterlab.ai/en/docs/developers/api-overview): Keys, scopes, the shape of every response, errors, limits and paging. Everything that holds for the whole REST API.
- [API reference](https://chatterlab.ai/en/docs/developers/api-reference): Every endpoint of the REST API, with what it takes, what it returns and which scope it needs.
- [Webhooks](https://chatterlab.ai/en/docs/developers/webhooks): Each new lead and ticket sent to an address of yours as it happens, signed, and how your server checks it came from us. Being tested, and not open to every workspace yet.
- [Connect an assistant (MCP)](https://chatterlab.ai/en/docs/developers/mcp): Let Claude, ChatGPT, Cursor or another AI assistant set up and improve your agents, by signing in or with a key.

## Docs: Trust

- [Data and privacy](https://chatterlab.ai/en/docs/trust/data-and-privacy): What is stored about your visitors and about you, where it lives, who else touches it, how long it is kept, and what that means for your own privacy notice.
- [The EU AI Act](https://chatterlab.ai/en/docs/trust/ai-act): What the European AI regulation asks of a chat agent on a website, which parts ChatterLab builds in, and which parts remain yours.
- [Security](https://chatterlab.ai/en/docs/trust/security): How an agent is protected against people who try to talk it into something, what that protection cannot promise, and how keys, files and client links are kept safe.

## Docs: Help

- [Frequently asked questions](https://chatterlab.ai/en/docs/help/faq): Short answers to what people ask before and just after they start.
- [Troubleshooting](https://chatterlab.ai/en/docs/help/troubleshooting): The problems that come up most, each with its likely cause and what to do.

## Optional

- [Every documentation page in one file](https://chatterlab.ai/llms-full.txt)
- [The documentation in Dutch](https://chatterlab.ai/nl/docs)
- [Privacy notice](https://chatterlab.ai/en/privacy)