HyAI - Multi-Model AI Chat Assistant

HyAI is a premium Android chat application created by Hyaxcu, providing access to multiple cutting-edge AI models through a single, stunning interface. It gives you access to GPT, Claude, Gemini, Grok, DeepSeek and more.

Features

• Multiple AI Models: Switch between GPT-5.4 Nano, Claude Sonnet 5, Gemini 3.1 Flash, Grok 4.1 Fast, and DeepSeek V4 Pro
• Personalization: Custom display name, 6 accent colors, font size control (small/medium/large), chat bubble style (rounded/classic)
• Professional Vector Icons: All icons are custom vector drawables, no emojis used anywhere in the UI
• Beautiful UI: Dark theme with Material Design 3, gradient accents, smooth animations
• Smart AI: Enhanced system prompt ensures the AI knows its identity as HyAI (not ChatGPT/Gemini/Claude) and provides thorough, intelligent responses
• Chat History: Maintains conversation context across messages
• Quick Actions: One-tap example prompts to get started
• Typing Indicator: Real-time animated feedback while AI generates responses
• Error Handling: Graceful network and API error messages

Requirements

• Android 8.0+ (API 26+)
• Internet connection

Technical Stack

• Language: Kotlin
• UI: Material Design 3 (Material You)
• Networking: OkHttp
• JSON: Gson + org.json
• Storage: SharedPreferences for personalization settings
• Architecture: Single-Activity with inner RecyclerView Adapter

Setup & Build

1. Open the project in Android Studio or Code on the Go
2. Sync Gradle
3. Build and run on your device

The API key is already pre-configured — no additional setup needed.

How to Use

1. Launch HyAI
2. Type your question or tap a quick action card
3. Tap the send button (or press Enter on keyboard)
4. Switch AI models anytime by tapping the model selector at the top
5. Start a new conversation using the "+" button
6. Tap the gear icon for personalization settings

Personalization

• Display Name: Customize how your name appears in chat
• Accent Color: Choose from Purple, Blue, Green, Pink, Orange, or Cyan
• Font Size: Small, Medium (default), or Large
• Bubble Style: Rounded (default) or Classic

API

This app uses an OpenAI-compatible API endpoint:

• Authentication: Bearer token
• Format: Fully OpenAI-compatible

License

Created by Hyaxcu. Free for personal and educational use.