Google DeepMind Releases Gemini 4 Hydrogen

Google DeepMind introduced Gemini 4 Hydrogen, a new model designed for rapid execution across diverse agentic workflows, developer tasks, and everyday applications.

The model is priced flat across its entire 1 million-token context window at $1.50 per million input tokens and $7.50 per million output tokens. It is available across Google AI Studio, the Gemini API, Gemini for business, the Gemini app, Google Search, and paid Google AI Pro and Ultra subscribers in Google Antigravity.

Hydrogen features four thinking levels: low, medium, high (default), and a new xhigh tier. At its default high thinking level, Hydrogen surpasses Argon on the Artificial Analysis Intelligence Index with a score of 51 compared to 50, reaching 54 at its highest xhigh setting.

To help automate multi-model collaboration, Google introduced Orchestrator in Google Antigravity. Orchestrator dynamically switches between models like Carbon and Hydrogen within the same session. On Terminal-Bench 4.0, Orchestrator achieved task success rates close to Carbon while using 24% less quota on average and completing 19% faster.

When compared to Gemini 3.8 Flash, Hydrogen finishes tasks 2.5 times faster at its high default setting and more than triples Terminal-Bench 4.1 scores at 57% versus 18.2%. It also pairs native 1 million-token input with up to 1 million output tokens. On benchmarks, Hydrogen scored 58.8% on HLE-Diamond, 52.3% on Vals Tax Agent Bench, 55.8% on Vals Legal Research Bench, 53.4% on the Multimodal Knowledge Agent benchmark, and 71.6% on Agents' Last Exam v1.1.