r/Langchaindev is a subreddit with 2k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses langchain, ai, chatbot, llm, and rag.
The (unofficial) Langchain subreddit for all things Langchain and AI!
Popular Themes in r/Langchaindev
#1
Solution Requests
: "Best open source document PARSER??!!"
38 posts
#2
Advice Requests
: "Guys I need your help"
25 posts
#3
Self-Promotion
: "Streamlit implementation of ChatPDF is live now"
13 posts
#4
Pain & Anger
: "Confused between Lambda, EC2 and ECS for my slack RAG chatbot"
8 posts
#5
Ideas
: "Transform Your Ideas into Reality with DemoGPT: A New Way to Prototype Using 🦜️🔗LangChain"
4 posts
#6
Opportunities
: "Github code to automate web scraping with Langchain and ChatGPT functions"
3 posts
#7
News
: "Langrunner Simplifies Remote Execution in Generative AI Workflows"
3 posts
#8
Money Talk
: "I am starting to learn langchain and wathing tutorials on it. But to use language models i need credits. Which model provides free credits for some period or for a student account?"
1 post
Popular Topics in r/Langchaindev
#1
Langchain
: "✨ Tutorial: Build an LLM-powered app with Langchain and Streamlit in 18 lines of code"
83 posts
#2
Ai
: "Github code to automate web scraping with LangchAin and ChatGPT functions"
48 posts
#3
Chatbot
: "I Built a Customer Support Lagchain Chatbot That Protects against PII - Here's How"
27 posts
#4
Llm
: "✨ Tutorial: Build an Llm-powered app with LangChain and Streamlit in 18 lines of code"
15 posts
#5
Rag
: "How to add citations to a Rag"
10 posts
#6
Course
: "LlamaIndex Course is out"
7 posts
#7
Openai
: "We built C1 - an Openai-compatible API that returns real UI instead of markdown"
7 posts
#8
Tutorial
: "✨ Tutorial: Build an LLM-powered app with LangChain and Streamlit in 18 lines of code"
6 posts
#9
Conversation
6 posts
#10
Gpt
: "Few-Shot Examples “Leaking” Into Gpt-3.5 Responses – Anyone Else Encountered This?"
5 posts
Member Growth in r/Langchaindev
Yearly
+299 members(19.9%)
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Last updated: June 2, 2026