Flowise review: Open source visual builder for AI agents and chatbots with APIs and SDKs

What Flowise does

Lets you build AI agents and chatbots visually, as multi-agent workflows or single-agent flows with tool calling and RAG, and connect them to your apps through APIs, SDKs or an embedded chat widget.

Flowise is an open source platform for building AI agents visually. It has two building styles. Agentflow is for multi-agent systems, where workflow orchestration is spread across several coordinated agents. Chatflow is for single-agent systems and chatbots that can call tools and retrieve knowledge from various data sources (RAG). The homepage also lists human review of tasks performed by agents, and full execution traces that support Prometheus, OpenTelemetry and other observability tools.

For developers, Flowise offers APIs, an embedded chat widget and TypeScript and Python SDKs, so flows can be connected to existing applications. The homepage lists 100+ LLMs, embeddings and vector databases, on-prem and cloud deployment, and horizontal scaling with a message queue and workers. It can be installed globally with npm.

Prices are shown on the homepage with a $ sign, and each is labelled per month. The Free plan is $0 and includes 2 flows and assistants, 100 predictions per month, 5MB storage and community support. Starter is $35 per month with unlimited flows and assistants, 10,000 predictions per month, 1GB storage and community support. Pro is $65 per month with 50,000 predictions per month, 10GB storage, unlimited workspaces and priority support. It includes 5 users, then $15 per user per month. The Starter button reads "First Month Free". The page shows no annual prices or annual discounts. The homepage also carries a notice that the vendor is sunsetting Flowise, with no details given there.

• Multi-agent workflow orchestration (Agentflow)
• Single-agent chatbots with tool calling and RAG (Chatflow)
• Human review of agent tasks
• Execution traces with Prometheus and OpenTelemetry
• APIs, embedded chat widget and TypeScript and Python SDKs
• 100+ LLMs, embeddings and vector databases
• On-prem and cloud deployment
• Horizontal scaling with message queue and workers

Our take

Flowise fits developers and teams who want to assemble chatbots and multi-agent workflows visually, and who care about open source code, an npm install or on-prem deployment. The APIs, embedded chat widget and SDKs make it a candidate for adding agents to your own applications. The Free plan is small, at 2 flows and assistants and 100 predictions per month, so it reads as a way to evaluate rather than run production work. The biggest caveat is the homepage notice that the vendor is sunsetting Flowise. The page gives no date or details, so anyone planning a long-term commitment should read that announcement first. The page also shows no annual pricing, and it does not list supported platforms.