Google rolls out Gemini 4 Hydrogen with flat pricing across its context window

Google announced the global rollout of Gemini 4 Hydrogen across the Gemini API, AI Studio, Gemini for business, the Gemini app and Search. The model costs $1.50 per million input tokens and $7.50 per million output tokens across its entire 1 million-token context window. Google also introduced Orchestrator in Antigravity, which switches models within a session. The company says it achieved near-Carbon task success rates on Terminal-Bench 4.0 while consuming 24% less quota and finishing 19% faster on average. Hydrogen supports coding and work with PDFs, spreadsheets, audio and video; access through Antigravity requires a paid Google AI Pro or Ultra subscription.