# Google Adds Orchestrator to Antigravity for AI Ultra Subscribers By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/55988 Published: 2026-11-12T22:40:48.000Z Updated: 2026-11-12T22:40:48.000Z Section: Technology > Google’s early Terminal-Bench 4.1 results showed success rates comparable to Carbon alone, with 24% lower quota use and tasks completed 19% faster on average. Google began rolling out Orchestrator in Antigravity to Google AI Ultra subscribers on Nov. 12, adding a two-model workflow to its coding platform that used less quota while delivering similar benchmark success rates. In early Terminal-Bench 4.1 results, Orchestrator had success rates comparable to Gemini 4 Carbon working alone. The workflow used 24% less quota and completed tasks 19% faster on average. A single Antigravity session can shift work between models as a task progresses. Carbon handles planning and reviews the output, while Hydrogen writes and tests code. Orchestrator routes work between them, so developers do not have to change models manually as a task moves from planning to implementation. The models have different roles: Carbon is designed for higher-level planning and review, while Hydrogen is tuned for faster execution. Orchestrator is available through Antigravity’s desktop apps, command-line interface and IDE extensions. Access is limited to Google AI Ultra subscribers. Ultra tiers that include Carbon and Orchestrator cost between $99.99 and $199.99 per month. Google AI Pro costs $19.99 per month and includes Argon and Hydrogen, but not Carbon or Orchestrator. Hydrogen access is gradually opening to Pro and Ultra subscribers. Google launched Carbon on Nov. 10, then [expanded Carbon access through its Gemini API the next day](), opening the model to developers and enterprise customers. The Carbon launch also included a preview of /swarm, a separate multi-agent feature. Antigravity first launched in May 2026 and has added specialized models for different software development tasks. ## Links in this article - [expanded Carbon access through its Gemini API the next day](https://www.tokenpost.com/news/technology/54204)