With a bit of creativity you can run something similar for free. It's worth noting Raspberry Pi comes with a free Wolfram license. The assistant part can come from something like Perplexity, which in my experience is decent at writing Mathematica code.

I also have a Mathematica license which I think is worth paying for. One of the few closed software that has no good equivalent in the libre world. Nonetheless, I wish Wolfram had come up with a different business model that made Mathematica more mainstream, as I feel it has not realized its potential in certain areas.