Try Kagi’s Research agent if you get a chance. It seems to have been given the instruction to tunnel through to primary sources, something you can see it do on reasoning iterations, often in ways that force a modification of its working hypothesis.
I suspect Kagi is running a multi-step agentic loop there, maybe something like a LangGraph implementation that iterates on the context. That burns a lot of inference tokens and adds latency, which works for a paid subscription but probably destroys the unit economics for Google's free tier. They are likely restricted to single-pass RAG at that scale.
