I switched my Gemma 4 model three times in 72 hours. Here's the decision tree I wish I'd had.

This is a submission for the Gemma 4 Challenge: Write About Gemma 4

I picked the wrong Gemma 4 model. Twice.

A 72-hour speedrun through E2B, E4B, and 31B-via-cloud — and the decision tree I wish I'd had on hour one.

Three days before the deadline, I sat down to build a multimodal Gemma 4 app for the challenge. I'd already decided which variant I'd use: E4B, because bigger is better, right?

I shipped on E4B. Then I shipped on E2B. Then I added OpenRouter's 31B as a third option and let users pick.