81
Stack Score
Best for
Developers and technical builders prototyping LangChain-style LLM apps who want a visual editor instead of pure code.
At a glance
- Pricing
- freemiumfrom $35/mo
- Setup time
- 15 minutes
- Learning curve
- medium
- Last verified
- 5/19/2026
What we love
- ✓Visual builder dramatically lowers LangChain learning curve
- ✓Open source MIT license — no vendor lock-in
- ✓Strong community templates speed up prototyping
- ✓Local LLM support via Ollama for private deployments
Where it falls short
- −Complex flows get unwieldy in the visual canvas
- −LangChain abstraction shifts can break older flows
- −Hosted cloud plan is less mature than the OSS version
Pricing
✓ Pricing verified Jun 21, 20263 tiers
Open Source
$0
MIT license, self-hosted
- ✓Unlimited flows
- ✓All node types
- ✓Community support
Starter
$35
per month, managed cloud
- ✓10k predictions
- ✓Hosted infrastructure
- ✓Email support
Pro
$65
per month
- ✓50k predictions
- ✓Team workspaces
- ✓Priority support
Why we picked it
For when LangChain is too code-y and you want a visual canvas.
Overview
Drag-and-drop LLM workflow builder built on LangChain. Open source, self-host or cloud.
Key features
- ●Drag-and-drop LangChain node editor
- ●Pre-built chains for RAG, agents, and chatbots
- ●Multi-model support — OpenAI, Anthropic, local Ollama
- ●Vector store integrations for Pinecone, Chroma, Weaviate
- ●API endpoint exposure for every flow you build
- ●Self-hosted Docker deployment or managed cloud
- ●Marketplace of community-built templates
Best use cases
RAG chatbot prototype
Wire a document loader, vector store, and LLM into a working knowledge bot in an hour.
Customer support agent
Build a multi-tool agent that searches docs, books meetings, and escalates to humans.
Internal workflow automation
Expose AI flows as APIs for ops teams to call from Zapier or custom apps.
Integrations
Similar tools
See all automation tools →One AI Stack pick every week.
The tool we’d pay for this week, why we’d pay for it, and what we’d skip. No promo spam.