🤖 OmniChat Pro

OmniChat is a high-performance, modular, and aesthetic conversational AI platform built with Streamlit and OpenAI. It features advanced capabilities like RAG-lite document processing, real-time streaming, and cost transparency, all wrapped in a premium adaptive UI.

✨ Key Features

• ⚡ Streaming Pro: Real-time word-by-word response rendering for an elite UX.
• 📄 RAG-Lite Knowledge: Upload .pdf or .txt files to provide context-aware grounding for the AI.
• 🌓 Auto-Theme Adaptive: Native CSS detection for system light/dark modes with pixel-perfect contrast.
• 📊 Usage Transparency: Real-time token counting and estimated cost calculation for every response.
• 🎭 Personality Forge: Customizable system prompts to define AI behavior and identity.
• 📥 Topic-Aware Export: Automatic chat title generation for intelligent file downloads.

🏗️ Architecture

The project follows a strict modular design pattern for maximum maintainability:

OmniChat/
├── app.py             # Main entry point & state orchestration
├── modules/           # Core logic modules
│   ├── ai.py          # OpenAI engine & model mapping
│   ├── ui.py          # Components for sidebar & chat view
│   ├── css.py         # Advanced adaptive styling engine
│   ├── tools.py       # Token counting & utility functions
│   └── docs.py        # PDF & Text processing engine
├── .env               # Environment configuration (API Keys)
├── .gitignore         # Repository exclusions
└── requirements.txt   # Dependency management

🚀 Getting Started

1. Prerequisites

Ensure you have Python 3.9+ installed and an active OpenAI API Key.

2. Installation

Clone the repository and install the dependencies:

pip install -r requirements.txt

3. Environment Setup

Create a .env file in the root directory:

OPENAI_API_KEY=your_actual_key_here

4. Launch

Launch the application with Streamlit:

streamlit run app.py

🛠️ Tech Stack

• Streamlit: Application framework.
• OpenAI API: Large Language Model integration.
• Python-Dotenv: Configuration management.
• PyPDF: Document processing logic.
• Vanilla CSS: Advanced theme-aware UI refinements.

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Developed with a focus on aesthetics, modularity, and high-performance AI integration.