Gemini 3.5 Flash Has a 1M Token Context Window. Here's What You Can Actually Build With It. (opens in new tab)

This is a submission for the "1 million token context window" sits in every I/O recap summary. Then people move on. It sounds like a spec-sheet number — impressive in the abstract, like a car rated for 700 horsepower. Sure. But what road are you actually driving on? I want to make it concrete. Gemini 3.5 Flash shipped GA at Google I/O 2026. Here's what 1M context actually unlocks, with working code and one real experiment I ran. What Shipped Gemini 3.5 Flash is the first generally available m...