Chayi
Chayi is your private, on-device AI companion built for offline-first conversations. In 2.0, we upgraded speed, model control, and voice input while keeping your data on your device.
Powerful Features
Discover what makes our app stand out from the crowd
Complete On-Device Privacy
All AI processing stays local by default, so your prompts and responses remain on your device.
Faster Local Model Engine
Chayi 2.0 ships with a more capable offline model for quicker responses and better context handling.
Built-in Apple Intelligence
Use Apple Intelligence directly in Chayi and switch models from within each chat thread.
Voice-to-Text Prompts
Speak your prompts naturally and let Chayi convert them into text instantly.
Smarter Model Downloads
Track progress, pause or resume downloads, and keep model state synced across the app.
Model Management in Settings
Delete installed models at any time from Settings to free storage and keep only what you use.
Experimental BYOK Support
Connect your own providers and models with Bring Your Own Key support.
Flexible Personas and Flows
Keep the personality you love while benefiting from improved reliability and performance refinements.
What's New in Chayi 2.0
A faster private AI core, a refined Liquid Glass experience, and smarter tools for everyday offline conversations.
More powerful offline local model
Delivers faster and smarter responses while preserving Chayi's private on-device foundation.
Fresh Liquid Glass look and icon refresh
A cleaner visual system with a polished app icon update to match the new generation.
Apple Intelligence integration
Model selection is now available directly in chats for more control per conversation.
Voice-to-text prompts
Start conversations hands-free by speaking your prompts instead of typing.
Improved model downloads
Includes progress tracking, pause and resume support, and synchronized status across the app.
Delete models from Settings
Installed models can be removed anytime without leaving the app flow.
Experimental BYOK, plus fixes and performance work
Bring your own keys for external providers while benefiting from broad stability and speed improvements.
See It In Action
Get a sneak peek of our beautiful and intuitive interface
Swipe horizontally to browse all screenshots
Frequently Asked Questions
Quick answers to common questions about Chayi
Does Chayi work fully offline?
Yes. Core chat with local models works offline on-device. Optional integrations may require internet if you enable them.
Can I remove downloaded models later?
Yes. In Chayi 2.0 you can delete installed models at any time from Settings to free storage.
What is BYOK support?
BYOK means Bring Your Own Key. You can connect your own provider API keys to use external models, currently as an experimental feature.
How do voice prompts work?
You can speak your prompt and Chayi converts it to text so you can send requests faster without typing.
Private AI, Upgraded for 2.0
Download Chayi for offline-first AI chat with faster local models, voice prompts, Apple Intelligence support, and flexible model control.
