Why I Wanted to Try This With Gemma 4
I’ve been building Twilize — a tool that generates Tableau workbooks from natural language — for a while now. Most of my own testing uses the Anthropic API because Claude gives the sharpest schema reasoning. But I kept getting the same question from enterprise users: “We can’t send data to a third-party API. Can this work entirely offline?”
So I decided to actually do it myself, document every step, and share what the output quality looks like when Gemma 4 is doing the thinking. No API key. No internet after the initial model download. Just a CSV, a local model, and Twilize.
Here is exactly what I did.
What You Need Before You Start
