Features
Keyboard Extension – use AI in any macOS app (Messages, Notes, Mail)
Voice Chat – hands-free conversation with AI
Text to Image – generate images from text prompts
Image Chat – engage using images and emojis
System-wide Translation – select text for instant translation
Siri Integration – quick AI access via Siri Shortcuts
iCloud Sync – sync conversations across devices
Markdown Rendering – bold, italics, links in chat
LaTeX Formula Rendering – display math expressions
Prompt Library – pre-made prompts for quick starts
Multiple Model Support – local models, API keys, cloud, Apple Intelligence
Web Search – available on OpenCat Cloud and select providers
Text to Speech – AI response read aloud
Join Team – share chats and get tips
MCP Support – Model Context Protocol and tool calls
Very large context window for whole-document analysis
Upload and analyze images, PDFs, text, and design files
Structured output generation (JSON, XML, tables)
Multi-language code writing and debugging
Claude Code artifact support for generating and managing project files
Claude Design for design-to-code round-trips
Claude Tag persistent AI teammate in Slack that learns organizational context
Claude Science workbench integrating databases, pipelines, and tools for computational research
Voice mode on mobile apps (basic text-to-speech)
Constitutional AI safety alignment
API for custom integrations and automation
Web interface and mobile apps (iOS, Android)
Managed agents with dreaming (simulation), outcome tracking, and multiagent orchestration
Self-hosted sandboxes and MCP tunnels for secure execution
Claude Sonnet 5 and Fable 5 models available