Chatvia vs Flowise: nothing to wire up#

Flowise and Chatvia are both free, open source and self-hosted, so this is not a fight about price or freedom. Flowise is a kit for developers who wire AI flows by hand. Chatvia is the finished AI agent I built so that a whole team can run one without a developer in the room.

My short answer#

Pick Chatvia if you want a ready agent: set it up from a dashboard, put it on your site and in your chat apps, and get handoff, guardrails and analytics in the box.

Pick Flowise if you are a developer who wants full control of every step of the flow, and you are happy to build the rest yourself.

What Flowise is#

Flowise is an open-source, low-code builder for AI apps. You drag blocks onto a canvas and wire them into a flow: a model, a prompt, a retriever, some tools. You can host it yourself under the Apache 2.0 license, or pay for its cloud. Some enterprise parts are paid.

Workday bought Flowise in 2025. It is still open source, and it is now part of a large company's plans. I mention it because that matters to some buyers, in both directions.

What Chatvia is#

Chatvia is a free, self-hosted platform for AI chat agents. You install it on your own server with one command. Your agents answer from your files, websites and Q&A, and they work on your website, in Slack, Teams, WhatsApp and more.

You get the full source code. There are no plans and no seats.

The long list of things they share#

I want to be fair here, because on the basics Flowise is as good as Chatvia:

• Both run on your own server.
• Both give you the source code.
• Both are free to host yourself.
• Both let you pay your AI provider at cost, or nothing with a local model.
• Both let you use any model, including models you run yourself.
• Both can use many tools and MCP servers.

That is a long list. What is left is one question: how much do you want to build?

Building versus switching on#

In Flowise, you build the agent. You pick the blocks, wire them up, and test the flow. That is powerful. It is also work, and when the person who built it moves on, someone else has to keep it running.

In Chatvia, the agent is already built. You write its persona and instructions, choose a model, add your files and websites, and test it in the playground. Search, reranking, follow-up questions and source citations are in there already. Nobody on your team wires a flow, because there is none.

Channels#

Flowise gives you an embed widget and an API. Anything else, you write yourself.

Chatvia ships with a chat widget, a hosted chat page, voice chats, Slack and Microsoft Teams, WhatsApp, Messenger, Instagram, Telegram, a command bar and a REST API. One agent, the same behaviour in every place.

Handoff, leads and analytics#

Flowise has no live handoff to a person. In Chatvia these parts are ready:

• your team takes over a widget chat live when a person should answer,
• forms in the chat capture leads, with a CSV export,
• analytics sort every chat by topic, mood and tone, and
• evaluations score test questions with an AI judge, exact matches, patterns or tool calls.

Guardrails and tool safety#

In Flowise, safety checks are something you build into your flow, like everything else.

In Chatvia, guardrails are on from the start. They catch prompt injection, mask personal data, keep the agent on topic, and stop abusive language. For each tool you choose: it runs, it waits for a person's OK, or it never runs. Every call is logged with its input and result.

Built for more than one person#

This is the part I care about most. Chatvia is made for many people and many teams. Each workspace has its own agents, knowledge, people and settings, kept fully apart. Roles come with 41 permissions. Two-factor sign-in and passkeys are built in, and API keys follow the same rules as the dashboard.

You can run many workspaces for your own company in one install, at no cost.

When I would pick Flowise#

Flowise is the better choice if:

• you are a developer who wants to control every step of the flow,
• you want to build many kinds of AI apps, not mainly chat agents, and
• you are happy to build the channels, handoff and safety parts yourself.

Verdict#

Flowise and Chatvia share the same values: open source, self-hosted, free. The difference is what you have on day one. Flowise hands developers a kit. Chatvia hands your team a working agent, with channels, handoff, guardrails, analytics and workspaces already in place. If you want to ship an agent rather than build one, Chatvia gets you there sooner.

Install Chatvia on a server of yours and see for yourself. It takes a few minutes.

Prices are from Flowise's pages and public reviews in October 2026. They change often, so check them before you choose.