@n8n/n8n-nodes-langchain.lmchatopenai
2,488 workflows using this node.
What is the @n8n/n8n-nodes-langchain.lmchatopenai node used for in n8n workflows?
@n8n/n8n-nodes-langchain.lmchatopenai n8n workflows are automation templates that use the @n8n/n8n-nodes-langchain.lmchatopenai node as part of a reusable workflow. Builders use these templates to inspect how the node connects with triggers, data transformation steps, app integrations, notifications, storage, or AI-powered actions inside n8n. Each workflow listing includes a title, summary, author attribution, categories, complexity level, source links when available, and a downloadable JSON file for review before import. Use this page to compare practical examples, understand the surrounding nodes, and choose a template that can be safely tested and adapted in your own n8n workspace.
n8n-n8n-nodes-langchain-lmchatopenai 
Query Slack channel history with natural language using OpenAI
Chat with a Slack channel using AI. This workflow fetches the channel’s message history and lets you ask natural lang...
PDF proposal knowledge base with S3, OpenAI GPT-4o & Qdrant RAG agent
This template has a two part setup: 1. Ingest PDF files from S3, extract text, chunk, embed with OpenAI embeddings, a...
AI guest post generator with OpenAI & Google Sheets automation
About this Template This n8n template automates the process of writing SEO guest post content using OpenAI, based on...
Automate Client Onboarding with GPT-4o, GoHighLevel, Google Drive, Slack, and Gmail
Automate the complete client onboarding process using n8n , GoHighLevel , Slack , Google Drive , and Gmail . This wor...
Automate Client Onboarding with GPT-4o-mini, Asana, Slack, Google Drive and Gmail
Automate the complete client onboarding process for AI automation services using n8n , Asana , Slack , Google Drive ,...
Calculate Embodied Carbon (CO2) for Revit/IFC Models using AI Classification
Estimate embodied carbon (CO2e) for grouped BIM/CAD elements. The workflow accepts an existing XLSX (grouped element...
Estimate Construction Costs from Revit/IFC Models with GPT-4 and Claude
Estimate material price and total cost for grouped BIM/CAD elements using an LLM driven analysis. The workflow accept...
Generate and store AI images with DALL-E and Azure Blob Storage
Beginner’s Tutorial: Manage Azure Storage Account Container & Blob with n8n [
Auto-categorize Gmail emails with AI and send prioritized Slack alerts
Who is this for? Teams using Gmail and Slack who want to streamline email handling. Customer support, sales, and oper...
Talk to your Google Sheets using ChatGPT-5
This n8n workflow template creates an intelligent data analysis chatbot that can answer questions about data stored i...
Smart Gmail Labeling Automation with Text Classifier and GPT-5
What this workflow does This workflow automatically organizes your Gmail inbox by fetching recent emails, analyzing t...
Automate Morning Brew–style Reddit Digests and Publish to DEV using AI
This workflow contains community nodes that are only compatible with the self hosted version of n8n. Who’s it for Com...
Decodo SaaS pricing intelligence workflow (B2B pricing radar)
SaaS Pricing Brief Generator (Decodo → LLM → Google Docs → PDF → Slack) Try Decodo — Web Scraping & Data API (Coupon:...
Smart Gmail auto-replies while out of office with AI
Who is this for? If you're going on vacation or away from work and want your Gmail to respond to emails intelligently...
Automate call center sentiment analysis with GPT-4o-mini and Google Sheets
What problem does this workflow solve? Call centers often record conversations for quality control and training, but...
Send AI-summarized unread email alerts to Slack using GPT-4o and Gmail
Who is this for? If you’re overwhelmed with incoming emails but only want to be notified about the essentials, this w...
Query your Trello board using natural language with OpenAI GPT
Chat with Your Trello Board (n8n + OpenAI) Description Turn your Trello board into a conversational assistant. This w...
Automated Trello Board Summarization with GPT-5-Nano
This workflow pulls a Trello board → lists → cards , maps key fields (board, list, task names/descriptions), and asks...
Analyze Legal Documents with GPT & o4-mini plus Gmail & Google Sheets
Description This workflow lets you upload a PDF document and automatically analyze it with AI. It extracts the text,...
Convert POML to AI-Ready Prompts & Chat Messages with Zero Dependencies
POML → Prompt/Messages (No Deps) What this does Tu...
AI system prompt generator & optimizer (n8n + OpenAI)
This workflow acts as a System Prompt Optimizer Agent . You send it a draft prompt or goal, and it returns: 1. A rewr...
Resume reviewer with GPT-4o-mini and human validation via gotoHuman
This workflow reviews resumes against a job description using OpenAI for automated scoring and gotoHuman for human va...
Automated cover letter generator with Indeed job scraping and GPT-4o-mini
This workflow automates the process of writing tailored cover letters for job applications. It: 1. Uses Apify’s Indee...
Search Outlook emails with natural language queries using GPT-4o
This workflow allows you to search your Outlook mailbox with natural language . You type what you’re looking for (e.g...