Gemini 4 Hydrogen

Google has unveiled Gemini 4 Hydrogen, a new AI model designed for swift and efficient coding and agentic workflows. Unlike its siblings, Gemini 4 Carbon and Argon, which focus on deep reasoning for complex problems, Hydrogen is optimized for rapid task completion across various applications. This includes Google AI Studio, the Gemini API, Gemini for business, the Gemini app, Google Search, and paid Google AI Pro and Ultra subscribers through Google Antigravity.

Hydrogen outperforms Argon on the Artificial Analysis Intelligence Index, scoring 51 at its default high level and reaching up to 54 at its highest setting. It also often completes tasks faster than models in its class, making it a valuable tool for everyday coding and workflow tasks. Priced at $1.50 per million input tokens and $7.50 per million output tokens, Hydrogen offers a flat rate across its entire 1 million-token context window.

The model is particularly effective for real-world software development, where teams typically use frontier models for complex architectural tasks and need a faster, more efficient model for writing code, testing, and verifying changes. Hydrogen is designed to stand alone or work alongside Carbon and Argon in multi-model workflows.

To facilitate this, Google has introduced Orchestrator in Google Antigravity, a system that dynamically switches between models like Carbon and Hydrogen within a single session. This allows for faster task completion with reduced costs.

In addition to its performance advantages, Hydrogen stands out as a standalone upgrade for teams transitioning from Gemini 3.8 Flash. It delivers up to 2.5 times faster task completion at its high default setting, significantly improves Terminal-Bench 4.1 scores, and reduces fabricated claims by over 5 times. It also maintains competitive performance against other models in its class while often finishing tasks more quickly and using fewer output tokens.

For consumers, Gemini 4 Hydrogen enhances the Gemini app by providing more accurate and reliable responses to user queries, making it a more effective personal assistant. The model also improves Google Search by delivering more helpful and intuitive results globally. Beyond its technical capabilities, Hydrogen is built with safety and security in mind, incorporating the latest Gemini 4 safety and security enhancements to mitigate misalignment and misuse.