Micro Chat

Multi-model AI chat app

Features

• Multi-model support: Choose between OpenAI (gpt-4o, gpt-4-turbo, gpt-3.5-turbo) and Gemini (gemini-2.5-flash, gemini-2.5-pro, gemini-2.0-flash) models for each chat message.
• Microservice architecture: The backend model service is decoupled from the web frontend using go-micro.
• Modern web UI: Responsive, full-screen chat interface that works on desktop and mobile. Input is auto-focused for fast chatting.
• OpenAI & Gemini integration: The backend calls the OpenAI or Gemini API to generate responses from the selected model.
• Chat history: Unique chat history based on user sessions

Usage

Set your OpenAI API key (for OpenAI models):

export OPENAI_API_KEY=xxx

Set your Gemini API key (for Gemini models):

export GEMINI_API_KEY=yyy

Run it using Micro

micro run

Go to http://localhost:8082

Project Structure

• model/ - Go microservice for model inference (calls OpenAI or Gemini API)
  • handler/handler.go - Implements the model handler logic
  • proto/ - Protobuf definitions and generated code
  • main.go - Service entrypoint
• web/ - Go web service for the chat UI
  • main.go - Serves the HTML/JS frontend and proxies chat requests to the model service

TODO

• Chat history
• User login
• So much more