New Delhi: Google Search is set to become more capable of answering complex questions with a major update powered by its new AI model, Gemini 4 Hydrogen. Google has described the rollout as its biggest model improvement to Search yet.
While the company already offers powerful AI models such as Gemini 4 Carbon and Gemini 4 Argon for tackling difficult problems, Gemini 4 Hydrogen is designed to handle everyday tasks with greater speed and intelligence.
According to Google, Hydrogen is 2.5 times faster than its previous fast model, Gemini 3.8 Flash. It is built specifically for “agentic workflows”, allowing AI to independently carry out tasks involving multiple steps. On standard intelligence benchmarks, it also outperforms the more powerful Gemini 4 Argon at its default high thinking level.
Smarter Google Search
The update is designed to help Google Search better understand users’ queries, including long, multi-part questions and searches containing confusing typos. Its improved ability to follow instructions and select the right tools allows it to address different parts of a request more precisely.
Google is also using an advanced “fan-out” technique, through which the AI breaks a long question into smaller sub-queries to find relevant websites and related links that users might otherwise miss.
In AI Mode, search results will include more visual answers, such as images, comparison tables, custom tools and structured responses. The update will also improve answers across all languages supported by Google’s AI Mode.
Support For Work And Coding
Beyond web searches, Hydrogen can handle everyday tasks such as writing code, running tests and verifying code changes. For complex workflows, it can work alongside the more powerful Carbon and Argon models.
Users can choose from four thinking levels: low, medium, high, which is the default, and the new extra-high tier. These options are designed to help complete tasks faster while using fewer output tokens.
Hydrogen currently ranks fifth on the Agent Arena benchmark for multi-step tasks, including deep data research, analysis and codebase navigation.
Availability
Google said Gemini 4 Hydrogen is rolling out globally to Search users. The model is also being introduced to the Gemini App, Gemini API, all tiers of Google AI Studio and paid AI Pro and Ultra subscribers using its Antigravity development platform.
