OpenCat - AI Chat, Agent, MCP

Bring AI into every part of your workflow: chat, writing, translation, and search.

· Multiple model options — local models, API Key, Cloud subscription, Apple Intelligence
· MCP — supports MCP and tool calls
· Web search — available on OpenCat Cloud and select providers
· System-wide translation — select text in any app for instant AI translation
· Content rendering — supports LaTeX formulas, Markdown, and code highlighting
· Cross-platform — natively built for Mac, iPhone, and iPad
· Data privacy — stored locally, synced across devices via iCloud

[Pro Features]
· AI Keyboard — invoke AI right in the text field of any app to polish or reply in one step
· OpenCat Cloud subscription provides access to all major models

[A Variety of Models]
· OpenCat Cloud — fast access to leading models
· Local models — one-tap download of open-source models for offline use, accelerated by Apple silicon
· BYOK — use your own API Key, including Coding Plan
· System models — supports Apple Foundation Models

[OpenCat Cloud — Ready to Use, No Setup]
· No sign-up, zero configuration, all major models supported
· 50+ models — ChatGPT, Claude, Gemini, Grok, DeepSeek, GLM, MiniMax, Kimi, Qwen, Doubao, and more, all in one place
· Online search supported

[System-Level AI Translation]
Set OpenCat as your default translation app to translate selected text directly in Safari, Mail, Notes, and any other app. Powered by large language models, translations are natural and fluent — far superior to traditional translation engines.

[Local Models, Offline Inference]
· One-tap download — popular open-source models like Llama, Qwen, and Gemma
· Apple silicon acceleration — built on Apple's official MLX framework, fully leveraging GPU performance for fast, energy-efficient inference
· Fully offline — works without internet, conversation data never leaves your device

[Use Your Own API Key]
· 25+ providers supported — OpenAI, Claude, Gemini, DeepSeek, Kimi, Qwen, Doubao, ERNIE, and more

[Contact Us]
Email: [email protected]

Terms of Use
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Privacy Policy & Third-party AI Service Privacy Policy
https://opencat.app/privacy