Google Antigravity rolls out Orchestrator for AI Ultra subscribers

Google is rolling out Orchestrator, a new feature inside its Antigravity AI coding platform, to Google AI Ultra subscribers. The setup reduces quota use by 24% and completion time by 19% by letting Gemini 4 Carbon handle planning and review while Gemini 4 Hydrogen manages coding and testing.

How Orchestrator splits the work

Carbon is built for high-level planning and reviewing output, while Hydrogen is tuned for rapid execution. Orchestrator, launched on November 12, 2026, allows a single session to move between these modes automatically as tasks shift from architecture reasoning to function implementation.

Benchmark results and pricing

Google's early figures from Terminal-Bench 4.1 show Orchestrator delivered success rates comparable to Carbon running alone while using 24% less quota and finishing tasks 19% faster. The feature is limited to Google AI Ultra subscribers, with tiers priced between $99.99 and $199.99 per month.

The Pro subscription costs $19.99 monthly but only includes Argon and Hydrogen models, excluding Carbon and Orchestrator. Hydrogen is being gradually rolled out to both Pro and Ultra subscribers.

Broader implications for AI coding

Orchestrator represents a shift toward model routing, where platforms match subtasks to specialized models rather than relying on a single large model. This approach effectively stretches what Ultra subscribers get for their monthly fee while maintaining success rates.

The launch follows Google's introduction of Gemini 4 Carbon on November 10 and a preview of /swarm, a multi-agent feature. Antigravity, which launched in May 2026, continues to expand its suite of specialized engineering models.