Google Releases Gemini 4 Hydrogen AI Model
Google launched Gemini 4 Hydrogen, a high-speed AI model replacing Gemini 3.8 Flash with improved coding capabilities and reduced hallucinations.
Google released Gemini 4 Hydrogen, a new artificial intelligence model designed to replace Gemini 3.8 Flash across its product ecosystem. The model follows internal testing on the Jetski development platform, where employees characterized it as a cost-effective workhorse similar to previous Flash models.
Hydrogen is available immediately with relaxed access limits, differing from the staged rollouts and subscription restrictions applied to the Argon and Carbon models of the Gemini 4 family. Google reports that Hydrogen is 2.5 times faster than Gemini 3.8 Flash in high thinking mode and reduces fabricated claims by more than five times.
The model introduces four thinking levels—low, medium, high, and xhigh—and more than triples the Terminal-Bench score of its predecessor in code generation. In the Artificial Analysis Intelligence Index, the xhigh mode scored 54, surpassing the 50 scored by the Argon model. This release occurs as Google competes with Anthropic, which recently announced Fable and Mythos models focused on hardware design and cybersecurity.
