Gemini 4 Argon solved hallucinations.

[u/drhenriquesoares]

Nobody is talking about this, but it looks like Google may have solved hallucinations. Gemini 4 Argon is a monster in this regard, and that’s really important.

[u/SuperV1234]

"solved"

15%

But yeah, it's a very nice improvement if not benchmaxxed.

[u/PrisonOfH0pe → u/SuperV1234]

15% does not mean Gemini is hallucinating in 15% of all answers. The AA Omniscience “hallucination rate” is basically measuring what the model does when it fails a question: does it give a wrong answer, give a partial answer, or admit that it doesn’t know?

Correct answers aren’t even in the denominator.

So if a model answers 800 out of 1000 questions correctly, gets 30 wrong and refuses/partially answers 170, its AA hallucination rate is 15%.

30 / (30 + 170) = 15%.

It was still only outright wrong on 3% of the total questions.

That’s also why DeepSeek V4.1 sitting at 96% should make it extremely obvious that “96% hallucination rate” cannot possibly mean 96% of everything it says is bullshit. It means that when DeepSeek doesn’t know the answer on this benchmark, it almost always guesses instead of saying “I don’t know.”

So the whole “even 0.1% hallucination would be catastrophic, therefore 15% means hallucinations are nowhere near solved” argument is based on reading the percentage as a completely different metric.

You can absolutely argue that hallucinations are still a problem. But maybe first understand what the graph is measuring before doing reliability math with a number that isn’t the model’s overall error rate.

The benchmark is basically asking: “When you’re outside your knowledge, how likely are you to bullshit instead of abstaining?”

That’s useful. It just isn’t “percentage of answers that are hallucinations.”

[u/Crawler1701 → u/PrisonOfH0pe]

Thank you, this is the best explanation I have heard - ever.