🤖 LangGraph AI Agent

🖼️ UI Preview

Below is a screenshot of the AI Agent Interface:

A full-stack AI chatbot using FastAPI + Streamlit powered by LangGraph + LangChain. Supports multi-model LLMs from OpenAI and Groq, and integrates optional real-time web search via Tavily.

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🚀 Features

• 🌍 Choose between OpenAI and Groq as model providers
• 🧠 Supports multiple models: GPT-4o-mini, GPT-3.5-turbo, LLaMA-3, Mixtral
• 🔍 Optional web search using Tavily API
• 📜 Custom system prompts
• 💻 User-friendly Streamlit interface
• ⚡ FastAPI backend with API endpoint

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🧩 Tech Stack

• FastAPI for backend
• Streamlit for UI
• LangChain + LangGraph for LLM orchestration
• OpenAI, Groq, Tavily APIs

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How to Run

• python -m venv venv
• source venv/Scripts/activate
• pip install -r requirements.txt
• uvicorn backend:app --reload (for backend)
• streamlit run frontend.py (for frontend)

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🛠 Installation

1. Clone the repository

git clone https://github.com/yourusername/langgraph-ai-agent.git
cd langgraph-ai-agent