A free, self-hosted alternative to Intercom, Chatbase, ChatGPT and more.
The self-hosted AI agent platform for teams.
Agents that answer from your documents, websites and Q&A, on your website, in Slack, WhatsApp or Teams, or through an API.
Quick start
How it works
No vector database to run, no glue code. Chatvia handles reading, search and the chat itself.
Upload documents, import a website, or write Q&A pairs. Files are read in the background, and you watch the progress live.
Write its persona and instructions, pick a model, turn on guardrails and connect tools. Test every change in the playground.
Share a hosted chat page, embed the widget on your site, connect a messaging app, or call the REST API from your own code.
Features
Free on your own server, with no limits on agents or replies. A license adds more workspaces, the API, voice and Live Chat.
Vector search finds meaning and BM25 finds exact words. Both run side by side, then a reranker puts the best results first. Documents are split into chunks by Chatvia's built-in chunker. It all lives in Postgres, so there is no extra database to run.
Call your own HTTP endpoints or any MCP server. Risky calls wait for approval, and every call is logged.
Stop bad input before it reaches the model, and keep the agent on topic.
Write test questions once. An LLM judge scores every answer, so you know a change made things better.
See what people ask, and step in when the agent should hand over to a human.
Invite teammates with roles and permissions. Sign in with two-factor codes, passkeys or social login. Limit access by IP, and set monthly message limits when you need them.
Chatvia is not tied to one model. Run open-weight models like Qwen3, or any model on OpenRouter, Mistral, Groq or Scaleway. Switch whenever you like.
Built for teams
Workspaces, roles, audit logs and data controls come built in. Here is what is in the box.
Agents answer from your own documents, websites and Q&A.
Shape how each agent thinks, talks and looks.
Same knowledge, same tools, same rules in every place.
Let agents look things up and take action, with every call on record.
Checks on what comes in, what the sources say, what tools return and what goes out.
Every conversation tells you something. Chatvia sorts it out for you.
Host many companies or departments, each in its own workspace, kept fully apart.
The controls security and legal teams ask for.
Your data stays with you, and you get the tools to run it well.
Channels
Build an agent once, then turn on the places it should answer. Same knowledge, same tools, same rules everywhere.
A full-page chat on your own domain. Share the link.
A chat bubble on any website, with one script tag.
Search-style answers that open with ⌘K.
Bearer tokens and OpenAPI docs for your own apps.
Slack
Microsoft Teams
Telegram
WhatsApp
Messenger
Instagram
Plus ready-made connectors that sign in with OAuth, or any MCP server you point it at.
Under the hood
A clean Laravel codebase with clear layers and strict checks. Easy to read, easy to change, easy to run.
Read the architecture guideChatvia is free to use. Read the code, change it, run it anywhere. The "Powered by Chatvia" credit stays unless you buy a license key.