# Antigravity CLI

> **TL;DR.** Antigravity CLI is Google's closed-source, Go-based terminal coding agent launched at Google I/O 2026, replacing the open-source Gemini CLI.

- **Category:** AI / Developer Tools / Coding Agents
- **Stage:** emergent
- **Age:** 15 days
- **Origin date:** 2026-05-19
- **First detected:** 2026-05-28
- **Canonical URL:** https://earlyterms.com/term/antigravity-cli
- **Sources:** 8 primary URLs

## Definition

Antigravity CLI is Google's closed-source, Go-based terminal coding agent launched at Google I/O 2026, replacing the open-source Gemini CLI. It brings the full Antigravity 2.0 agent harness to a lightweight, keyboard-first terminal interface — parallel subagents, async workflows, slash commands, and shared settings with the desktop app.

Announced [May 19, 2026](https://developers.googleblog.com/an-important-update-transitioning-gemini-cli-to-antigravity-cli/) alongside Antigravity 2.0 and the Antigravity SDK, the CLI gives terminal-first developers access to the same Gemini 3.5 Flash-backed agent engine powering Google's desktop and IDE surfaces. Free and individual users lose Gemini CLI access on June 18, 2026, making migration mandatory for most of the existing user base.

## Analogy

The terminal control panel for Google's agent platform — all the power, none of the GUI.

## Why it's emerging now

At I/O 2026, Google announced Gemini CLI stops serving free, Pro, and Ultra users on June 18, 2026. Antigravity CLI is the mandatory replacement — Go-based, closed-source, backed by Gemini 3.5 Flash. Developer backlash erupted immediately over lost Apache 2.0 access, tighter weekly quotas, and new data retention clauses.

## Related terms

- *parent:* Antigravity 2.0
- *related:* Gemini CLI
- *related:* Gemini 3.5 Flash
- *competitor:* Claude Code
- *competitor:* OpenAI Codex CLI
- *competitor:* OpenCode
- *competitor:* Cursor CLI
- *parent:* Agent Harness
- *parent:* Agentic Coding
- *parent:* Coding Agents
- *competitor:* OpenClaw

## Sources

1. [Google Developers Blog: Transitioning Gemini CLI to Antigravity CLI](https://developers.googleblog.com/an-important-update-transitioning-gemini-cli-to-antigravity-cli/)
2. [TechCrunch: Google launches Antigravity 2.0 with CLI at I/O 2026](https://techcrunch.com/2026/05/19/google-launches-antigravity-2-0-with-an-updated-desktop-app-and-cli-tool-at-io-2026/)
3. [The New Stack: Google pushes users from open-source Gemini CLI to closed-source Antigravity CLI](https://thenewstack.io/google-antigravity-cli/)
4. [The Register: Bye-bye, Gemini CLI; Google nudges devs toward Antigravity](https://www.theregister.com/ai-ml/2026/05/20/bye-bye-gemini-cli-google-nudges-devs-toward-antigravity/5243605)
5. [Hacker News: Gemini CLI will stop working from June 18, 2026](https://news.ycombinator.com/item?id=48196867)
6. [GitHub — google-gemini/gemini-cli: Discussion #27274 (transition announcement + community response)](https://github.com/google-gemini/gemini-cli/discussions/27274)
7. [MarkTechPost: Google Launches Antigravity 2.0 at I/O 2026](https://www.marktechpost.com/2026/05/19/google-launches-antigravity-2-0-at-i-o-2026-a-standalone-agent-first-platform-with-cli-sdk-managed-execution-and-enterprise-support/)
8. [GitHub — google-antigravity/antigravity-cli (official repo)](https://github.com/google-antigravity/antigravity-cli)

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_Generated by EarlyTerms · https://earlyterms.com/term/antigravity-cli_