Google Adds Gemini 4 Hydrogen to Antigravity as Orchestrator Automates Multi-Model Coding
Updated
Updated · InfoWorld · Nov 13
Google Adds Gemini 4 Hydrogen to Antigravity as Orchestrator Automates Multi-Model Coding
3 articles · Updated · InfoWorld · Nov 13
Summary
Google added Orchestrator to Antigravity, letting developers run planning, coding and review in one session by handing work between Gemini planner models and the new Gemini 4 Hydrogen.
Hydrogen acts as the execution model—editing files, writing code, and running builds and tests—while Carbon or Argon explores the codebase, maps dependencies and revises plans when execution stalls.
Analysts said the setup could lift coding speed and code quality while cutting token use, giving CIOs tighter control over AI spending by reserving heavier models for reasoning-intensive work.
Those gains come with governance risks: Antigravity documentation does not yet detail per-step model logs, raising questions about audit trails, accountability, security controls and how each model handles source code and IP.
Google is offering Orchestrator with Carbon to AI Ultra subscribers and with Argon to Pro and Ultra users; Hydrogen alone has a 1 million-token context window and costs $1.50 per million input tokens and $7.50 output.