Antigravity 2.23.0 appears Gemini 4 Argon configuration, but the interface still returns 404
Antigravity 2.23.0 adds Gemini 4 Argon with 4 models ID and Low, Medium, and High reasoning configurations, but they are still hidden and cannot currently be called. Older models are also being retired, while Argon is mainly available to selected cybersecurity partners.