OrChat

A simple LLM chat web app powered by OpenRouter, built with Go and Fiber.

Features

• Chat with any LLM available on OpenRouter
• Claude-like UI: sidebar with chat history, main chat area
• Model selection dropdown with all OpenRouter-supported models
• Streaming responses via Server-Sent Events (SSE)
• File-based chat history persistence
• Remembers your preferred model

Quick Start

# Set your OpenRouter API key
export OPENROUTER_API_KEY="sk-or-..."

# Build and run
go build -o orchat .
./orchat

# Or just run directly
go run .

Then open http://localhost:3000 in your browser.

Environment Variables

Variable	Required	Default	Description
OPENROUTER_API_KEY	Yes	—	Your OpenRouter API key
ORCHAT_DATA_DIR	No	data	Directory for storing chats and preferences
PORT	No	3000	HTTP server port

Project Structure

orchat/
├── main.go              # Fiber server, routes, OpenRouter integration
├── storage/
│   └── storage.go       # File-based chat & preferences persistence
├── static/
│   └── index.html       # Single-page frontend (HTML/CSS/JS)
├── data/                # Created at runtime
│   ├── chats/           # JSON files per chat
│   └── preferences.json # User preferences
├── go.mod
└── go.sum