Macai

macai is a native AI chat client for macOS written in Swift. It lets users talk to many AI services from one desktop app, with API keys stored in the Apple Keychain and no telemetry collected. Data goes directly to the chosen AI service or stays local when a local model is used. It is aimed at Mac users who work with several providers and want a fast, private alternative to browser tabs. Supported services include ChatGPT, Claude, Gemini, Grok, Perplexity, OpenRouter, Ollama and Docker Models. Custom AI assistants carry their own instructions, and context size, tools and default assistants can be set separately for each API service. The app can create and edit images using Nano Banana and ChatGPT image models, offers local search across large chat histories, and syncs between devices through iCloud. Full local backups of chats and settings can be exported and restored. Suggested uses include writing and study help, custom tools written in HTML and JavaScript, command line help, and photo editing, restoration and colorization. macai requires macOS 14.0 or later and is open source. The site offers a download and a Support Development option, and it publishes no paid plans or prices.