Post says the Arena model is a "new Flash"
A post on X on the afternoon of Nov. 15 Japan time said the Google Gemini model that had appeared in "Arena," a site that anonymously compares AI answers, is likely a new Flash model called "Gemini 4 Oxygen." It came from @hakmgpt, an account that describes itself in its profile as "AI Engineering." The poster wrote "It seems" and did not state it definitively. The post gave no basis, such as where the poster had checked, for either the name "Oxygen" or the Flash positioning. Google has neither announced nor confirmed it.
It seems this isn't the Krypton model, as I initially thought, but it’s a new Flash model: Gemini 4 Oxygen. We might get the entire periodic table with the 4 series
The Gemini 4 models Google has released carry the names of elements: Carbon, Argon and Hydrogen.
A day earlier, the poster asked whether it was Krypton
On the afternoon of Nov. 14 Japan time, a day earlier, @hakmgpt posted with a video that a new Gemini model was in Arena under the name "gemini-4-hydrogen." At that point the poster asked "krypton , is that you ?", suggesting it might be the unannounced "Gemini 4 Krypton." That too was the poster's guess, and no basis was given. The Nov. 15 post quoted this post and revised that view.
a new Gemini model At arena under the name (gemini-4-hydrogen) krypton , is that you ? hand drawn animation. More coming soon :)
On the same day, Nov. 14, another account also posted that a new Gemini checkpoint (an in-development version of a model) had appeared in Arena and could be Krypton. Later, yet another account posted that Gemini 4 Krypton was not yet being tested in LMArena (earlier article). The relationship between the Arena model and Krypton has not been confirmed.
"Next Flash" post comes with a video comparing it with Hydrogen
Early on Nov. 16 Japan time, @LuminaBench, an account that posts AI news and benchmarks, also posted "Gemini 4 Oxygen (the next flash model)." With an approximately 29-second video, it said the left side showed Hydrogen at the "xhigh" setting and the right side showed the output that was routing in Arena, and wrote that there was a difference on the same prompt. The comparison was made by the poster, and the text of the post gives no figures or scores. This post also gave no basis for the name or the Flash positioning.
Gemini 4 Oxygen (the next flash model) Left is xhigh Hydrogen, the right is what was routing in Arena, same prompt and there is a decent difference
In replies in the same thread, @LuminaBench described the right side of the comparison with "supposedly" and "according to some people," saying it was what people said had been in Arena the previous day. The poster also presented the point that the model was in Arena as hearsay.
Released Hydrogen was officially announced by Google
The "Gemini 4 Hydrogen" used in the comparison is a model Google officially released on Nov. 12 (Nov. 13 Japan time). Google positions it as a model that handles everyday tasks, programming and AI agent work quickly and efficiently, and says it finishes tasks 2.5 times faster than the current "Gemini 3.8 Flash." The official name Google announced is Gemini 4 Hydrogen, and the announcement does not attach the Flash name to it.
No Google material shows the name "Gemini 4 Oxygen," its relationship to Hydrogen, its performance or its release timing.
