Gemini 3.8 Flash is supported in Google Antigravity (available in the official CLI and IDE), but the version 1.1.1 of antigravity-acp has not been updated with the new model definitions. Because agy_acp_server appears to enforce hard-coded models, clients like Zed and agent-shell cannot use Gemini 3.8 Flash.
Gemini 3.8 Flash is supported in Google Antigravity (available in the official CLI and IDE), but the version 1.1.1 of
antigravity-acphas not been updated with the new model definitions. Becauseagy_acp_serverappears to enforce hard-coded models, clients like Zed and agent-shell cannot use Gemini 3.8 Flash.