Description
Dynamically optimize AI performance by automatically switching between multiple LLMs — powered by LangChain
🧠 What Problem Does It Solve?
Sometimes a single LLM doesn’t deliver the desired output. This intelligent workflow loops through multiple LLMs and validates each AI-generated response — ensuring only the best response is delivered.
💡 This workflow automates:
🔁 Switching between LLMs on demand
✅ Validating AI responses with sentiment analysis
🔂 Retrying failed responses with the next available LLM
📨 Returning only the best output to the user
⚙️ How It Works
🟢 Triggers on incoming chat messages
🔢 Sets and tracks LLM index for switching
🔌 Connects dynamically to the selected LLM via LangChain Code
💬 Generates a customer support response using the selected model
🧪 Validates the response with sentiment analysis for tone, empathy, and resolution
❌ If validation fails, retries with the next LLM
🏁 Loop ends when a valid result is produced or all LLMs are exhausted
✨ Key Features
🧩 Dynamically connects multiple LLMs via LangChain
🧠 Uses AI to handle sarcastic and vague customer complaints
🔍 Built-in response quality check (sentiment + empathy validation)
🔁 Automatic fallback to better LLM if the first response fails
🛠️ Fully self-hosted — ideal for advanced users and developers
⚙️ Customizable — swap in any LLM (e.g., OpenAI, Anthropic, etc.)
🧰 What You Need
✅ Self-hosted n8n instance
✅ OpenAI account (or any LLM provider)
✅ LangChain Code Node enabled
✅ Chat message trigger setup
🚀 Setup Instructions
🔗 Clone and import the workflow into your self-hosted n8n
🔑 Add OpenAI API credentials
🔧 Customize your list of LLMs and their order
💬 Send a test message (e.g., sarcastic customer complaint)
🔄 Watch the workflow loop through LLMs until a valid response is sent
📝 Example Input
"I really love waiting two weeks just to get a keyboard that doesn’t even work. Great job. Any chance I could actually use the thing I paid for sometime this month?"
📊 Integrations
LangChain Code Node
OpenAI GPT-4o / GPT-4o-mini / o1
Self-hosted n8n
Project Link:-[https://preview--llm-cycle-champion.lovable.app/]
