Google launches Gemini 4 Hydrogen model for more nuanced AI responses
Google introduced Gemini 4 Hydrogen, a new AI model that handles multi-part queries, typos and specific requests, and is now the default in AI Mode across its services.
Google announced that its Gemini 4 Hydrogen model is designed to provide more helpful answers to complex questions, including those with multiple parts, typographical errors or highly specific requests. The model can break down a query and address each component separately, and it is now the default model in AI Mode for Google Search.
The upgrade is being rolled out today across Google Search, the Gemini app, all tiers of Google AI Studio, the Gemini API, Gemini for Business and the Google Antigravity platform for AI Pro and Ultra subscribers. According to Robby Stein, vice president of product for Google Search, the model is "now the new default model in AI Mode & being used for your hardest questions in AI Overviews."
Gemini 4 Hydrogen also expands the range of links it returns by running simultaneous queries across relevant subtopics, and its responses now include more visual elements such as images, comparison tables, graphs and maps. Stein cited an example where the AI generated an interactive animated driving simulation to explain how phones determine a car’s lane on a highway without cellular coverage.
The model offers four thinking-level settings—low, medium, high and a new "xhigh" mode. Google says Gemini 4 Hydrogen delivers "significant leaps in both speed and intelligence" compared with Gemini Flash 3.8 and that it "matches or outperforms some of the competing models in its class," referencing Claude Sonnet 5.5 and GPT-6.1 Terra.