Google has a new IDE called Antigravity that is focused on integration with agents.
I decided to try it out on my Meteor app.
My goal was to install tests. Which I’ve never done.
It supports LLMs from Google and Anthropic. I started with Gemini 3 Pro/high. It knew exactly what kind of test tech Meteor prefers.
It did a great job of producing tests for my homepage. When I ran out of free quota, I switched to Claude Sonnet 4.5 Thinking and told it to continue where the previous model left off. It found some errors in what Gemini had done, corrected them, and completed the test code.