Google announces "Antigravity 2.0." In a demo, it developed an OS from scratch and even ran Doom, showcasing efficiency and strong development capabilities

Google unveiled Antigravity 2.0 at I/O 2026, an AI development environment built for parallel work across multiple agents.

The update adds stronger CLI, SDK, and voice features, with support across Android, Firebase, and Google AI Studio.

In the keynote demo, Google used Antigravity and Gemini 3.5 Flash to build an OS in more than 12 hours and get Doom running.

Google said the API cost was under $1,000, highlighting how agent-driven development could make large software projects faster and cheaper.