Lesson 1 of 8

Meet Gemini

6 min read

You open Gemini and just start typing — but there's a quiet choice at the top of the screen. A fast model and a deep one. Pick well and the same app feels twice as capable.

One app, a family of models

Gemini isn't a single model — it's a family. Flash is the quick one: it answers in a blink, perfect for everyday questions. Pro is the deep one: it slows down to reason through hard problems before it replies. Same app, same box — you just pick which one picks up.

There's no single best Gemini — only trade-offs. More depth costs you speed and money; more speed costs you depth.

Flash for most things, Pro when it's hard

A good habit: reach for Flash by default — it's fast and handles the everyday. Switch to Pro when the question is genuinely hard: a tricky plan, careful analysis, code that has to be right. The names and version numbers shift often, so don't memorise them — learn the shape: a fast tier and a deep tier, and match the model to the job.

Match the model to the task: quick asks to Flash, hard problems to the reasoning model. Don't pay depth's price for a one-line answer.

Model names and numbers change often, and the picker gets rearranged. Don't anchor on a version — anchor on the question you're asking and how much thinking it deserves.