I tried Google’s agentic coding app and it’s way beyond autocomplete

Gemini 3 and Nano Banana Pro hit the Gemini app for everyday users in November 2025, along with a slew of AI-powered features from Google. These upgrades are a big deal—Gemini 3 Pro is the best-performing AI model on the planet in multiple categories, and Nano Banana Pro is the most powerful text-to-image model we’ve ever seen. However, the most important release isn’t a new version of Gemini or Nano Banana; it’s a brand-new app from Google called Antigravity.