I have been having a great time with Gemini 3 Pro. The sweet spot for this model is single html page apps that do one complex thing and keep the rest simple. This has been ideal for toy apps that incorporate generated images and text, simulations, data visualizations, and other experiments. A recent fully realized example I have enjoyed creating has been circuitduo.com - a circuit builder that using a public exercise database.
Build a circuit using the ~3000 exercises from the database (or add a custom segment):
And run through the circuit with side by side screens for two people:
Gemini may not be the right model for every task, but for this type of web toy app gemini works well.