Google invented transformers. OpenAI just released their model to the public first. Good for them, but not exactly impressive research.
Reasoning models are pretty cool, but it was just taking what every body was already doing manually ("and please show your work") and making it automatic. The whole agentic shift is also nice but kinda obvious. But I'm still struggling with hallucinations and context rot all the time and it's becoming increasingly clear that that's not something that can be solved incrementally. We need more architectural breakthroughs like the transformer to achieve something like real AGI. Possibly several more.