The majority of the time I’ve used an LLM, it’s failed to do the task properly. The times that it worked are the times that a bit of Googling would have solved. I’m not OP, but I’m not at the point where I would spend money on an LLM either.
But as a general statement, you cant just Google a comprehensive summary about beta glucans from chanterelle mushrooms, dosages, cooking methods, immune benefits and processes and get a 10 minute read about exactly what you asked for. But with Gemini deep research you can.
LLMs are good at generating text that sounds authoritative. They’re great for creative writing to share for a laugh with friends. I’m not at the point where I’m willing to use them for important work, let alone pay for them.
(I’ve yet to try them as a coding assistant, though. Maybe that’s the missing link.)
2, unless I magically have a plan for talking to an expert in HVAC repair, and not just an idiot in HVAC, I can diagnose my HVAC unit with AI just fine. And I did. And no it wasn't as simple as "well duh, every post online says it's the large capacitor".