Google's Orchestrator swaps models mid-task

🔥 What happened Google launched Gemini 4 Hydrogen and Orchestrator in Antigravity on November 12. Orchestrator pairs Hydrogen with the stronger Carbon model and dynamically switches between them mid-task. 💡 Why it matters On Terminal-Bench 4.1, Orchestrator hits near-Carbon success rates while using 24% less quota and finishing 19% faster. That beats static routers, which guess task difficulty from the first prompt and route the whole job to one model. ⚡ Our take Static routers were always a hack. Google's bidirectional approach is the first honest attempt to treat model selection as a runtime decision – and it could fundamentally change how agents are built.