Ars Technica reports Google has released Gemini 4 Hydrogen, replacing Gemini 3.8 Flash across its products, with immediate access under far more relaxed limits than the staged, subscription-gated Argon and Carbon rollouts, and API pricing unchanged at $1.50 per million input and $7.50 per million output tokens. Google claims the model is 2.5 times faster than 3.8 Flash, cuts fabricated claims more than fivefold, and its Search integration is its biggest AI search update ever; reporter Ryan Whitwam doubts the tuned-search claim and finds Google's elemental names less descriptive.