Gemini CLI is Dead. Here's Antigravity.

On June 18, 2026, Google deprecated Gemini CLI. The replacement is Antigravity 2.0 — and the transition is, charitably, messy. There's been "bait-and-switch" coverage and a lot of genuine confusion. Here's what Antigravity actually is, how to migrate, and the gotchas.

This is time-sensitive: the explainer window for migration content closes by mid-August.

What Antigravity actually is

Antigravity 2.0 is Google's AI-first IDE, plus a Go-based CLI and a Python SDK. The headline features:

• Multi-agent orchestration — multiple agents working a task in coordination.
• Free public preview with generous Gemini 3 Pro rate limits at no cost.
• Three surfaces: the IDE, the CLI (for terminal people), and the SDK (for builders).

It is the spiritual successor to Gemini CLI, but it is not a drop-in replacement. Think "next-gen product that happens to absorb the old one."

Migration, in short

Install the CLI:

pip install google-antigravity

If you were scripting against Gemini CLI, the SDK is the migration path — the CLI itself is a different tool with a different surface. Budget time to port workflows; don't assume command parity.

The gotchas (read these before you commit)

• A public RCE vulnerability was found in the early release. It's being patched, but if you're evaluating for a team, wait or sandbox it.
• No compliance certifications yet. SOC 2 / ISO / enterprise signals aren't there. Fine for personal use, a problem for regulated environments.
• The free tier is real but preview-stage. Rate limits are generous today; don't architect around them assuming they'll never change.

Should you switch?

• Personal projects / experimentation: yes. Free Gemini 3 Pro orchestration is genuinely useful, and the multi-agent model is the direction the whole field is moving.
• Production / team / regulated: not yet. The RCE history and missing compliance certs make this a "watch closely, commit later" tool.

The honest framing: Antigravity is exciting and rough. It will probably be the right answer in a few months. Today, migrate if you were already on Gemini CLI and need a path forward; otherwise wait one release cycle.

FAQ

When was Gemini CLI deprecated, and what replaced it?

Google deprecated Gemini CLI on June 18, 2026. The replacement is Antigravity 2.0 — an AI-first IDE plus a Go-based CLI and a Python SDK, with multi-agent orchestration and a free public preview on Gemini 3 Pro.

How do I install the Antigravity CLI?

pip install google-antigravity. If you were scripting against Gemini CLI, the Python SDK is the migration path, not the CLI.

Is Antigravity a drop-in replacement for Gemini CLI?

No. It is a next-gen product that absorbs the old one, with a different surface. Don't assume command parity — budget time to port your workflows.

Should my team switch now?

Personal projects and experimentation: yes. Production, team, or regulated environments: not yet — the early public RCE vulnerability and the missing compliance certifications make this a "watch closely, commit later" tool.

The lead magnet

A migration cheat sheet — Gemini CLI commands → Antigravity CLI / SDK equivalents — is pinned in the video comments.

Subscribe to devkingov for the deep dive once the next Antigravity release lands.

Sources: Google developers blog — Gemini CLI transition, Google I/O 2026 developer highlights.