What is Macai used for?

Macai is a native macOS chat client that connects to many AI providers, including ChatGPT, Claude, Gemini, Grok and local Ollama models, in one lightweight app. It is a good fit for using several AI providers from one Mac app and chatting with local models through Ollama.

Is Macai open source?

Yes. Macai is open source under the Apache-2.0 licence. Its source code is on GitHub at Renset/macai and is written mainly in Swift.

Yes. Macai is open source, so the software itself is free to use.

Can I self-host Macai?

Yes. Macai can be self-hosted on your own server or infrastructure; there is no official hosted version.

What is Macai an alternative to?

Macai is an open-source alternative to ChatGPT. Other open-source alternatives to ChatGPT include Chatbox, NextChat and Enchanted.

Is Macai actively maintained?

Yes. The most recent commit to Macai was on 16 August 2026, and the latest release is v2.4.3, published on 16 August 2026. The project has 931 stars on GitHub.

Macai: open-source alternative to ChatGPT

About Macai

Macai is a native macOS application for chatting with large language models. Instead of tying you to one vendor, it works with most AI providers, including ChatGPT, Claude, xAI Grok, Google Gemini, Perplexity, Ollama and OpenRouter, as well as almost any service that exposes an OpenAI-compatible API. It is written in Swift and aimed at Mac users who want one tidy interface for several models.

The app supports vision input, image generation, search, reasoning models, and import and export of chats. Settings, messages and chats can be kept in sync across devices through iCloud. The README states that macai itself collects no telemetry or usage tracking, though Apple may gather anonymized telemetry when iCloud Sync is turned on. For commercial providers you supply your own API token; local models can be run through Ollama.

Macai is released under the Apache-2.0 license. You can download a universal binary notarized by Apple, install it with Homebrew using a cask, or build it from source. The interface is minimalist, with light and dark modes. It is a client you run on your own Mac rather than a hosted service.

Key features

Native macOS app written in Swift
Works with ChatGPT, Claude, Gemini, Grok and Perplexity
Local models through Ollama
Any OpenAI-compatible API endpoint
Vision, image generation and search support
iCloud sync for chats and settings
Chat import and export
Light and dark interface

Good fit for

→Using several AI providers from one Mac app
→Chatting with local models through Ollama

Built with: Swift
Tags: macos; ai-chat; llm; swift; ollama; chatgpt; claude; gemini

Macai: questions and answers

What is Macai used for?: Macai is a native macOS chat client that connects to many AI providers, including ChatGPT, Claude, Gemini, Grok and local Ollama models, in one lightweight app. It is a good fit for using several AI providers from one Mac app and chatting with local models through Ollama.
Is Macai open source?: Yes. Macai is open source under the Apache-2.0 licence. Its source code is on GitHub at Renset/macai and is written mainly in Swift.
Is Macai free?: Yes. Macai is open source, so the software itself is free to use.
Can I self-host Macai?: Yes. Macai can be self-hosted on your own server or infrastructure; there is no official hosted version.
What is Macai an alternative to?: Macai is an open-source alternative to ChatGPT. Other open-source alternatives to ChatGPT include Chatbox, NextChat and Enchanted.
Is Macai actively maintained?: Yes. The most recent commit to Macai was on 16 August 2026, and the latest release is v2.4.3, published on 16 August 2026. The project has 931 stars on GitHub.