Google has made Gemini 4 Hydrogen available in Google Search for all users worldwide. The company calls it the biggest model upgrade to Search so far. Robby Stein, Google's VP of Product for Search, announced the change on 12 November 2026.
The model follows instructions more closely and can call tools, so Search can address each part of a question, including ones with typos or very specific requests.
Anyone using Google Search can now put complicated, multi-part questions to it in natural language, for example about travel, shopping or hobbies. Answers are meant to cover every part of the question.
The model's reasoning also improves query fan-out, a technique that runs several searches at once across the relevant subtopics. In Google's words, this should lead people to sites they might not have found before.
Responses will include more images, structured answers, comparison tables and custom tools built for the query. Language understanding is also meant to improve across all languages currently supported in AI Mode.
The upgrade is live now and no sign-up is described. Google has not announced a price or any usage limits. It did not name specific benchmarks or technical specifications for the model.
Key facts
| Company | |
|---|---|
| Announced | 2026-11-12 |
| Available | Now, globally, for all Search users |
| Price | Not announced |
| Product | Gemini 4 Hydrogen |
| Platforms | Google Search |