Compare software

Langflow vs FastGPT: catalog facts
Langflow	FastGPT
Free Free and open source under the MIT license.	Free Free to self-host; the repository also references separate pro components.
Web, Self-hosted	Web, Self-hosted
Visual canvas plus built-in API and MCP server output Supports a large library of LLMs, vector databases and tools	Knowledge-base Q&A with RAG retrieval Visual AI workflow editor
Requires separate access to whichever LLM providers or local models you connect Complex workflows can require developer-level setup	Licence terms are not stated in the research Some features live in separate pro components
Self-hosted, Web application	Self-hosted
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.