I imagine it is 25k tokens not dollars

https://news.ycombinator.com/item?id=48927724 seems to say dollars? Although yes the phrasing could be clearer in the post

esafak 2 hours ago | parent | prev | next [-]

You can't do anything for 25k tokens; I've spent 100m today and the day isn't out yet.

	▲	2 hours ago \| parent [-]
		[deleted]

andai 3 hours ago | parent | prev | next [-]

I think the system prompt is bigger than that.

rustyhancock 4 hours ago | parent | prev | next [-]

That's standard token usage for /init

25k tokens is a few turns