Gemini 4 Argon hints emerge as Google tests Carbon checkpoint

Google has added new references to the Gemini 4 Argon model in Antigravity, with low, medium, and high reasoning efforts.

> Gemini web now also shows low, medium, and high reasoning efforts for all models, unifying the reasoning selector across tools.

> Business Insider recently reported that Google employees are already testing the next Gemini 4 checkpoint, called "Carbon," internally, and it performs at the Opus 5.5 level on coding tasks.

> The internal coding tool "Jetsky" referenced in the article is also an internal name for Antigravity (not the IDE version).

Ultrasoon? 👀

🗞 #google @testingcatalog