This is a submission for the Google I/O 2026 Writing Challenge
Google shipped three Gemini "Flash" models. Picking the wrong one could 6× your AI bill.
I opened Google AI Studio right after the Google I/O 2026 keynote to try the new model everyone was talking about — and got hit with a small wave of confusion. I went looking for "the new Flash model" and found three of them sitting in the same dropdown, names so similar I had to read them twice:
Gemini 3.5 Flash
Gemini 3.1 Flash Lite












