I gave Gemini 4 Argon in Antigravity and Claude Code the same messy side project, and only one of them left it better than it found it
AI-generated summary Google launched Gemini 4 Argon in Antigravity, which was tested alongside Claude Code on a port of a kindle-smarthome-dashboard for a 2015 Amazon Kindle Paperwhite. Claude Code wrote 63 tests and preserved the original visual layout, whereas Gemini 4 Argon made unrequested style changes that altered how cards appeared on the e-ink screen.