Continuing my benchmarking of how well AI can build a digital twin of an hourglass timer - this time with Gemini 3.8 Flash High mode built on Antigravity. Compared to Claude Fable 5 and Opus 4.8, sadly Gemini 3.8 lags behind by a substantial margin, even way behind GPT models. See for yourself. Previous Gemini models equally failed dismally the same test when I tested them in the past. This is so bad that I didn't bother sharing the code on GitHub. It is interesting how these latest models claim high scores in SWE benchmark tests, and can do amazing things, but struggle to implement my rather simple benchmark test to build a real-world digital representation of an hour-glass! The leader for this test is still Claude Opus 4.8 and Fable 5+
I use this standard prompt for all my tests:
Build me a single page application that is a digital twin of an hour glass timer. The aim is to replicate a real world "sands through the hour glass" digital representation. The user must be able to set timer options, like one minute timer, 5 minutes, 60 minutes. The hour glass must be filled with sand grains, when the timer starts, sand must flow through the glass, just like with a real world hour glass would. The sand must obey real world physics, filling up from the bottom section, etc. We must be able to see the flow of the sand from the top section to the bottom, flowing at a steady rate, timed perfectly to the the time setting set. Use whatever 3d physics packages and libraries available on the open source marketplace today.
