Overview

OpenCat is a native AI client for Mac, iPhone, and iPad that brings AI into chat, writing, translation, and search. Run models however you like — one-tap download of open-source models such as Llama, Qwen, and Gemma accelerated on Apple silicon via MLX, your own API keys, Apple Intelligence, or OpenCat Cloud with 50+ models including ChatGPT, Claude, Gemini, Grok, DeepSeek, GLM, MiniMax, Kimi, Qwen, and Doubao with no sign-up or configuration. It supports MCP and tool calls, web search, system-wide translation on selected text, and an AI Keyboard that refines text in any app's text field. Conversations render LaTeX, Markdown, and syntax-highlighted code, and data stays on device, synced across your Apple devices with iCloud.

Pricing: Free · Pro $9.99 · Cloud AI from $3.99

Minimum macOS: 14.0 (Sonoma)

Architecture: Apple Silicon, Intel

Key Features

Four ways to run models: local, your own API key, OpenCat Cloud, or Apple Intelligence
One-tap local models — Llama, Qwen, Gemma — accelerated on Apple silicon with MLX
OpenCat Cloud with 50+ models: ChatGPT, Claude, Gemini, Grok, DeepSeek, Kimi, and more
MCP and tool calls support
Web search on OpenCat Cloud and select providers
System-wide translation by selecting text anywhere
AI Keyboard for refining text in any app's text field
Voice chat and text-to-speech
Text-to-image generation and image chat
LaTeX formulas, Markdown, and code highlighting
Prompt library and Siri Shortcuts integration
Native on Mac, iPhone, and iPad with iCloud sync and local data storage