That it generates plausible texts? I would find it unlikely technological progress. That does not make this whole "AI safety" rhetoric any less bullshit distanced from reality. Especially from companies that are doom trolling all the time while also trying to maximize the negative impacts they are doom trolling about.
Frankly, book about the LLM achievements of 2026 would not be as long as people make it sound.
What I do really worry about the next depression and the fact that it will strengthen already strong fascist movements. Which already have full support of the most powerful CEO class intent on destroying democracy. Which happen to be the same people who push ai into everything, useful or not. I worry that the debt of these companies will be somehow offloaded on the rest of us again, that again middle class and poor will pay.