🚀 Chatbot Using LangGraph + Ollama (Gemma 3 1B)

A Powerful AI Chatbot built with LangGraph, Streamlit & Ollama (Gemma 3 1B)

---

🌟 Overview

This project is a modular AI chatbot system built using:

• 🧠 LangGraph for workflow orchestration
• 🤖 Ollama (Gemma 3:1B) for local LLM inference
• 🌐 Streamlit for interactive UI
• 🗄️ SQLite Database for persistent memory

It supports multiple chatbot types like:

• 💬 Basic Chatbot
• 🛠️ Tool-enabled Chatbot
• 🗂️ Database-integrated Chatbot
• 📚 RAG (Retrieval-Augmented Generation) Chatbot
• ⚡ Streaming Response Chatbot

---

🎥 Demo Preview

---

🏗️ Project Structure

Chatbot-Using-LangGraph/ │ ├── langgraph_backend.py ├── langgraph_tool_backend.py ├── langgraph_database_backend.py ├── langraph_rag_backend.py │ ├── streamlit_frontend.py ├── streamlit_frontend_tool.py ├── streamlit_frontend_database.py ├── streamlit_rag_frontend.py ├── streamlit_frontend_streaming.py │ ├── chatbot.db ├── requirements.txt └── README.md

⚙️ Setup Guide

🔹 Clone Repository git clone https://github.com/your-username/Chatbot-Using-LangGraph.git cd Chatbot-Using-LangGraph 🔹 Create Virtual Environment python -m venv venv venv\Scripts\activate 🔹 Install Dependencies pip install -r requirements.txt 🔹 Setup Ollama

👉 https://ollama.com

ollama pull gemma3:1b ollama run gemma3:1b 🔧 Configure Ollama from langchain_community.chat_models import ChatOllama

llm = ChatOllama( model="gemma3:1b", temperature=0.7 )

▶️ Run the Project

🔥 Streaming Chatbot (Best Experience)

streamlit run streamlit_frontend_streaming.py

💬 Basic Chatbot

streamlit run streamlit_frontend.py

🛠️ Tool Chatbot

streamlit run streamlit_frontend_tool.py

📚 RAG Chatbot

streamlit run streamlit_rag_frontend.py 🧩 Architecture Flow User 💬 ↓ Streamlit UI 🌐 ↓ LangGraph ⚙️ ↓ Ollama (Gemma 3 1B) 🤖 ↓ Response ✅

📸 UI Glimpse

🚀 Future Enhancements

🔍 PDF Chatbot (RAG) 🎤 Voice Assistant 🌐 Web Deployment 🧠 Fine-tuned Models 📊 Dashboard Analytics

🤝 Contributing

fork → clone → branch → commit → push → PR 🚀

📜 License

MIT License

👨‍💻 Author

Somen Pradhan AI/ML Developer

⭐ Support

If you Like this ⭐ Star the Repo 🍴 Fork It 📢 Share It

🔥 Pro Tip

💡 Run locally with Ollama → No API cost + Full Privacy 🔐

If you want next level 🔥 I can upgrade this with:

• GitHub badges (stars, forks, license, etc.)
• A banner image (custom design)
• A LinkedIn + resume project description

Just tell me 👍