Google Antigravity: Google's agent-first IDE

Google Antigravity is Google's entry into agent-first development — launched alongside Gemini 3 as a free, public-preview, agent-first IDE built on a VS Code base. Where editors bolted an agent onto an editor, Antigravity is designed around *orchestrating many agents*: one 'mission control' surface, many parallel tasks, agents that see your editor, terminal AND browser.

What it actually is

• An agent-first IDE — Gemini 3-powered agents plan and execute multi-step work: write code, run it, click through your web app, fix what breaks.
• Mission control for agents — run multiple autonomous tasks in parallel with a proper task surface, not one chat thread.
• Browser-in-the-loop — agents can operate a real browser (click, type, read) to verify UI work — not just unit tests.
• Free in public preview at launch — the strategic move Google always makes to win the platform war.

Why it matters

The pattern is official now: the editor IS an agent host. Google didn't build a chat sidebar; it built a control plane for fleets of agents with a window on your whole dev loop. Whether it wins depends less on the demo and more on Gemini 3's actual reliability on messy real code — but the intent, and the free preview, are serious.

Who it's for

• Google-ecosystem developers (GCP, Firebase, Android) — the first-party pairing is strong.
• Teams experimenting with multi-agent orchestration (parallel workstreams) rather than one pair-programmer.
• Anyone who wants to evaluate 'agent-first IDE' without paying for the privilege yet.

What to check

• It's a preview — expect rough edges, quota limits and shifting behavior; don't bet production on it this quarter.
• Anthropic/OpenAI still dominate agent benchmarks on hard multi-step coding — evaluate Antigravity on YOUR repo, not the launch video.
• Sends your code to Google — read the data-use terms; if your org forbids that, the choice was easy.

Antigravity is the clearest statement yet that 'agent-first IDE' is now a platform war — and it's early enough to influence where it lands by building with it. Repository/product: antigravity.google.