LangFlow
← Back to All AI Tools1. Should you try Langflow? Overview
| What it is | Open-source, low-code visual builder (Python) for LLM apps, RAG pipelines and agents, served as APIs; under IBM via the DataStax acquisition. |
| Country / HQ | Uberlandia, Brazil (Logspace/Langflow; acquired by DataStax 2024, then IBM 2025) |
| Best for | Developers and AI builders who want to prototype and ship LangChain/LangGraph agents and RAG visually, then self-host. |
| Check before buying | DataStax-hosted cloud was removed in April 2026 — you now self-host or use the free desktop app; IBM sells support. Large canvases get unwieldy. |
| Editor rating | 4.2 / 5 |
| Pricing signal | Free / open-source (MIT); IBM support custom |
2. Features What it does
| Feature | What it does |
|---|---|
| Drag-and-drop canvas | Wire components for LLMs, RAG, agents and tools. |
| Python components | Write custom Python nodes exposed as visual blocks. |
| LangGraph support | Graph-based multi-agent workflows with cycles/state. |
| Serve as API | Deploy flows as endpoints; Docker/K8s ready. |
| Model agnostic | OpenAI, Anthropic, Ollama, local and any LangChain model. |
3. Pricing Pricing (2026-10, USD)
| Plan | Price / mo | Key limits & who it fits |
|---|---|---|
| Open Source | $0 | MIT license; self-host via pip/uv/Docker or Desktop app. |
| Langflow Desktop | $0 | Free macOS/Windows app (post cloud retirement). |
| IBM support | Custom | Enterprise support sold by IBM post-acquisition. |
Langflow itself is free and MIT-licensed (self-host or free Desktop app). The DataStax-hosted cloud was retired in April 2026; enterprise support is sold by IBM and priced on request.
4. Integration Access & integrations
| Access type | Details |
|---|---|
| Platform | Python, Docker, Kubernetes; Desktop app. |
| Models | Any LangChain-supported LLM, local or cloud. |
| Owner | IBM (via DataStax acquisition); originally Logspace, Brazil. |
5. Reviews & Sources External reviews
| Source | Rating | What it says |
|---|---|---|
| Editor | 4.2 / 5 | The most powerful open visual builder for LangChain/LangGraph agents; cloud retirement pushes you to self-host, which is fine for builders. |
| OSS community | — | 100k+ GitHub stars; praised for flexibility; large canvases get messy. |
| Source | — | langflow.org; 2026 LLM-builder roundups (IBM/DataStax). |
6. Best for / Not for Fit
| ✔ Suitable | ✘ Not suitable |
|---|---|
| • AI builders prototyping RAG/agents • Teams wanting self-hosted low-code • LangChain/LangGraph users |
• Users wanting a managed cloud (retired) • Non-technical builders (some Python needed) • Those needing turnkey enterprise support (contact IBM) |
7. Competitors How it compares
| Competitor | How it differs | Best for |
|---|---|---|
| Flowise | Simpler LangChain canvas | Beginners |
| Dify | Full LLMOps platform, free tier | Product teams |
| LangChain (code) | Max flexibility, no UI | Engineers |
8. Summary Verdict
| Takeaway | Langflow is the open, Python-friendly visual IDE for LangChain/LangGraph agents and RAG — free to self-host, with IBM now selling support. |
| Who should pick it | AI builders who want a powerful, self-hostable visual agent builder. |
| Who should skip it | Users wanting a managed cloud or a no-code, non-technical tool. |