Google Antigravity completes a 'WAV silence adjustment tool' in just a few minutes... isn't that truly amazing?

I'm getting a little excited.

The other day, I had Google Antigravity generate an app that performs advanced astronomical calculations and displays a horoscope entirely from scratch without using any external libraries and it was of such wonderful precision and quality that it completely surpassed my own brain. Bravo. Here is the article.

Since astronomical calculation is an advanced process, I used Gemini 3 Pro (High) but as soon as it was finished, I hit a multi-day limit (= I'm not paying). Since Gemini 3 Pro (High) had been silently thinking and implementing for over an hour, I suppose that's an unavoidable result. I am very satisfied with the outcome.

Right now, I can only use Gemini 3 Flash but in this state, I tried having Antigravity generate a 'web tool that automatically adjusts WAV files.' Unlike astronomical calculations, it was completed in just a few minutes.

It is the app below. It was completed in just one chat. Seriously amazing. Wow.

I love using the music generation AI 'Suno', but the songs output by Suno have inconsistent 'silent parts' at the beginning and end of the tracks, and I had to adjust them to my liking every single time.

I used to open WAV files in a certain Windows tool and visually check the waveform to add or subtract silence. This is an incredibly tedious task, and it takes up an incredible amount of time.

...But I have absolutely no knowledge of implementation regarding WAV file control. That's why I can't build an app myself (even though I'm an app developer). So, it's Google Antigravity's turn.

The specifications for the app I wanted were as follows.

• Achieve arbitrary silence (in milliseconds) at the beginning and end of a song

• Consider low-volume noise levels that are inaudible to humans as silence

That's all.

Since the app specifications are extremely simple, Gemini 3 Flash is enough.

This is realized in just one chat. A working app is completed immediately. With just the following sentence. My heart won't stop pounding from how amazing this is.