FastAPI AI Chatbot API (Ollama + OpenAI)

A powerful REST API for AI chatbot built with FastAPI. Supports both Ollama (local, free) and OpenAI (cloud) as AI providers.

🔥 Features:

✔ REST API with automatic Swagger documentation

✔ Ollama support — local, free, no internet required

✔ OpenAI support — GPT-3.5/GPT-4

✔ Streaming responses (Server-Sent Events)

✔ Conversation history per session

✔ Multiple model support

✔ CORS enabled for browser access

✔ Health check endpoint

📦 API Endpoints:

✔ POST /chat — Send message, get AI response

✔ POST /chat/stream — Real-time streaming response

✔ GET /models — List available models

✔ GET /history/{session_id} — Conversation history

✔ DELETE /history/{session_id} — Clear history

✔ GET /health — Health check

✔ GET /docs — Swagger UI (automatic!)

📦 What you get:

✔ Full Python source code

✔ Step-by-step setup instructions

✔ Swagger API documentation (auto-generated)

✔ README.md documentation

🛠 Setup takes less than 5 minutes!

GitHub: https://github.com/Firoj0044/fastapi-ai-chatbot