Your PC is able to run comparatively small language models with limited number of parameters (a few billions). You can even do that on a modern mobile phone. Some of the more advanced models use hundreds of billions or even trillions of parameters. It’s not just the training. It’s more to do with model complexity.
You can also do weather forecasting on a PC, but the result will not be comparable to a forecast made with a supercomputer.
–Edit–
Typo fixes, because while even the most whimsy LLMs can write, apparently I cannot.
Your PC is able to run comparatively small language models with limited number of parameters (a few billions). You can even do that on a modern mobile phone. Some of the more advanced models use hundreds of billions or even trillions of parameters. It’s not just the training. It’s more to do with model complexity.
You can also do weather forecasting on a PC, but the result will not be comparable to a forecast made with a supercomputer.
–Edit–
Typo fixes, because while even the most whimsy LLMs can write, apparently I cannot.