macai is a SwiftUI-based macOS desktop application that acts as a unified chat client for multiple AI providers. It connects to ChatGPT, Claude, xAI (Grok), Google Gemini, Perplexity, Ollama, and OpenRouter, as well as any OpenAI-compatible API endpoints. Users can interact with different LLMs through a single native macOS interface with features like conversation management and iCloud sync.