---
title: Hy3
emoji: ⚡
colorFrom: yellow
colorTo: purple
sdk: gradio
sdk_version: 6.12.0
app_file: app.py
pinned: false
short_description: Hy3 multi-turn streaming chat with function calling
---

# Hy3 Preview · Chat Demo


### Features

- Multi-turn chat with automatic context management
- Token-by-token streaming output
- Sidebar controls: think level, system prompt, temperature, max tokens, top-p
- Function calling: paste JSON definitions, see structured tool calls, submit results back
- HTML code-block preview rendered in a sandboxed iframe
- Light & dark themes