Using the Gemini API CLI: How It Splits Work with Antigravity CLI and the Gen AI SDK, Setup, and Limits
The Gemini API CLI (gemini-api) is an experimental preview (v0.4.x) Google released on 2026-10-19: a single Go binary that turns Gemini models, media generation, and managed agents into stateless shell commands. It is not a coding agent. Use it when your own code decides the next step, Antigravity CLI when you want an agent to plan, and the Gen AI SDK for application backends.