Google kills Gemini CLI today and Antigravity CLI takes over

My take: Starting today, Gemini CLI stops serving requests for free, Pro, and Ultra users, Antigravity CLI is the official replacement. The new client is written in Go (faster and more responsive), can run multiple agents in parallel without locking up your terminal, and keeps features like hooks, sub-agents, and extensions, now called plugins. The most uncomfortable change: it is no longer open-source, unlike Gemini CLI under Apache 2.0.