Tried Hy4 preview through WorkBuddy and gave it a pretty vague prompt for a first person roller coaster ride, front row seat, make it feel fast, that was basically it. No detailed spec, no reference video, just a rough idea in a sentence.

What came back actually held up. Steep drop that felt like the bottom dropping out, banked turns that leaned the right way, scenery rushing by close enough that you register the speed instead of just watching it happen. For something built off a loose prompt like that, I did not expect it to nail the feel this well.

Coding and 3D rendering have clearly gotten a real upgrade here, and this took one pass to look this good.
Free to try in @WorkBuddy_AI for the next two weeks if you want to mess with it yourself.
@TencentHunyuan @TencentAI_News