Ask HN: How much does it cost to fine-tune an LLM? What services cam I use?

I'm a CS student at university right now, want to get into learning more about LLMs and their practical application. I'm still early in my education so I lack the background to understand how they work under the hood, but am still interested in using them to build something cool.

From what I have seen, fine-tuning a custom LLM like Llama is expensive and requires a GPU. Is there a way to do this for cheap? I know OpenPipe exists but it's hard to tell what it does and how I can use it. Any help would be appreciated.

Appreciate it.