Gemini 4 Hydrogen promises smarter Search—but access is not equal everywhere
Gemini 4 Hydrogen promises smarter Search—but access is not equal everywhere
Google introduced Gemini 4 Hydrogen as a fast model for complicated queries and multi-step tasks, and began rolling it into Search’s AI Mode and AI Overviews. The company said it would reach Search users globally, alongside releases in other Google products. DeepMind chief Demis Hassabis called it “incredible speed and intelligence for everyday coding, agentic work and all-round use.”
The pitch for Search is more than speed. Google says Hydrogen can parse multipart questions, make sense of typos and answer each part more precisely. Its responses may also include more links, images, comparison tables, graphs and maps; one demonstration turned a question about how phones locate a car on a highway into an interactive driving simulation. Google’s Search chief Robby Stein said Hydrogen is “now the new default model in AI Mode” and is being used for users’ hardest questions in AI Overviews.
Google chief executive Sundar Pichai emphasized efficiency, saying Hydrogen finishes tasks “2.5x faster” than Gemini 3.8 Flash. But the rollout is not uniform across Google’s products: one account says Search access is global, while free and AI Plus users of the Gemini app and AI Studio remain on older models; Pro and Ultra subscribers get Hydrogen there.
That same coverage also cautioned that Google has made similar claims about Search returning a wider range of sources before. It describes Hydrogen as a significant upgrade over Flash 3.8, but frames the launch as a trade-off: a quicker, more capable everyday model, not a replacement for Google’s more powerful Carbon and Argon models on the hardest or security-sensitive work.
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