Langflow started as an independent open-source project for visually building LangChain-based applications before DataStax acquired the company behind it in 2024, folding it into a broader generative AI application stack built around DataStax's Astra DB rather than leaving it as a standalone tool.
Despite that acquisition, Langflow has stayed open source and free, with DataStax stating the project remains agnostic rather than locked to its own database products specifically. Drag-and-drop components for building retrieval-augmented generation pipelines and agent workflows work the same way they did before the acquisition, now backed by a larger company's engineering resources and integration with DataStax's vector database for teams that want it.
Self-hosting remains free and unlimited, with DataStax's cloud infrastructure available as an optional managed path. For a developer who wants an open-source visual LangChain builder backed by a company with real database infrastructure behind it, rather than a smaller independent project, Langflow's post-acquisition position delivers that combination directly.
