Gemini 4 Hydrogen surfaces on Vertex API, rumored to launch tomorrow
imjustnewatai · x · 2026-11-12
- A user hit Google Vertex AI's global endpoint with gemini-4-hydrogen and got a 200 response: "I am Gemini 4 Hydrogen, a large language model built by Google", with the model version field matching.
- The model isn't in Google's Vertex catalog yet and Google hasn't announced it.
- Leaker claims it's a flash-class model, slightly worse than Opus 5.5, very cheap and fast, possibly launching tomorrow.
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