TL;DR: Google’s Antigravity desktop app 2.23.0, released October 12, 2026, contains the model IDs gemini-4-argon, gemini-4-argon-low, gemini-4-argon-medium and gemini-4-argon-high. It also has the menu labels “Gemini 4 Argon (Low)”, “(Medium)” and “(High)”, written in the same style as every model you can already pick. Version 2.22.0 had none of these. Argon is not selectable yet. On the same day, Gemini 3.1 Pro, 3.6 Flash and 3.7 Flash dropped out of the Antigravity CLI model list.
What we found
We track every official Antigravity build automatically. Our monitor picks up new releases from Google’s own update servers and scans each binary for model names. Shortly after midnight on October 13 it flagged the new desktop app version 2.23.0. We scanned the official Linux build, which shares its language server code with Windows and macOS.
Continue reading “Gemini 4 Argon Is Coming to Antigravity: Model Picker Labels Found in App 2.23.0”