Antigravity CLI 'agy' Replaces Gemini CLI with Multi-Model Config — Accepts Claude, GPT, and Self-Hosted Models; Gemini CLI Sunset June 18

Google Developers Blog·medium signal

Google's Antigravity CLI ('agy') runs the same agent harness as the desktop app but in a terminal-native form, with config (~/.config/antigravity/config.toml) accepting model identifiers for Gemini, Claude Opus, GPT, and self-hosted endpoints. Gemini CLI and Gemini Code Assist IDE extensions stop serving requests on June 18, 2026. The multi-model config is the headline: you can point 'agy' at any backend, making it a vendor-neutral terminal coding agent — a potential alternative to Claude Code for teams that want model flexibility.