Outside of [coding], I don't know of it being more than a somewhat better google
I've recently tried heavily leveraging o3 as part of a math-research loop.
I have never been more bearish on LLMs automating any kind of research than I am now.
And I've tried lots of ways to make it work. I've tried telling it to solve the problem without any further directions, I've tried telling it to analyze the problem instead of attempting to solve it, I've tried dumping my own analysis of the problem into its context window, I've tried getting it to search for relevant lemmas/proofs in math literature instead of attempting to solve it, I've tried picking out a subproblem and telling it to focus on that, I've tried giving it directions/proof sketches, I've tried various power-user system prompts, I've tried resampling the output thrice and picking the best one. None of this made it particularly helpful, and the bulk of the time was spent trying to spot where it's lying or confabulating to me in its arguments or proofs (which it ~always did).
It was kind of okay for tasks like "here's a toy setup, use a well-known formula to compute the relationships between A and B", or "try to rearrange this expression into a specific form using well-known identities", which are relatively menial and freed up my working memory for more complicated tasks. But it's pretty minor usefulness (and you have to re-check the outputs for errors anyway).
I assume there are math problems at which they do okay, but that capability sure is brittle. I don't want to overupdate here, but geez, getting LLMs from here to the Singularity in 2-3 years just doesn't feel plausible.