r/LangGraph is a subreddit with 4k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses langgraph, agent, multi agent, ai, and workflow.
LangGraph is a library for building stateful, multi-actor applications with LLMs, used to create agent and multi-agent workflows. The documentation can be found at https://langchain-ai.github.io/langgraph/
Popular Themes in r/LangGraph
#1
Advice Requests
: "Title: I wrote a free 167-page book on LLM Agent Patterns (looking for feedback)"
9 posts
#2
Solution Requests
: "How to build MCP Server for websites that don't have public APIs?"
7 posts
#3
Ideas
: "LangGraph + Memanto: permanent cross-session memory demo"
7 posts
#4
Self-Promotion
: "I built an Open-Source Multi-Agent AI Platform to analyze 1Hz wearable telemetry on GCP (Zero-Cost Architecture)"
4 posts
#5
Pain & Anger
: "Multi Agent system losing state + breaking routing. Stuck after days of debugging."
2 posts
#6
Opportunities
: "Building a new agent deployment platform (supporting LangGraph), would love to get some feedback!"
1 post
Popular Topics in r/LangGraph
#1
Langgraph
: "Langgraph video tutorial on Multi-agent system"
150 posts
#2
Agent
: "Built a persistent memory Agent with LangGraph + Memanto — cross-session recall works"
67 posts
#3
Multi Agent
: "Multi Agent system losing state + breaking routing. Stuck after days of debugging."
22 posts
#4
Ai
: "I built an Open-Source Multi-Agent Ai Platform to analyze 1Hz wearable telemetry on GCP (Zero-Cost Architecture)"
22 posts
#5
Workflow
: "How are you guys tracking costs per agentic Workflow run in production?"
18 posts
#6
Tool
18 posts
#7
Agents
: "I built an OS-style “paging” system for LangGraph Agents to prevent context loss (L1-Pager)"
18 posts
#8
Memory
: "long term Memory + data privacy"
8 posts
#9
Model
: "There is always a Solution for the costly Model problem."
7 posts
#10
Chatbot
: "UPDATE: sklearn-diagnose now has an Interactive Chatbot!"
6 posts
Member Growth in r/LangGraph
Yearly
+2k members(86.9%)
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Last updated: August 23, 2026