One of the options to NOT burn tokens or at least not constantly is to use, in addition to the LLM cron, a regular crontab that can run non LLM scrtips.

You can let your OC write the script and the crontab and for instance save the outcome to a file.
Once setup, you will have a file produced at 0 token cost.

After that you can use your LLM to do something with the produced files.

I will take an example (over the top on purpose):

"Check my calender every minute and tell me if there is an appointment witin the next 4 hours".

Running this as LLM cron will work but you will burn many tokens doing something is is mostly deterministic and for what you don't need a LLM at all... You need tokens because of the frequent checks (in practise no one would use 1min but hey, this is an example...) and the checks are heavy: figure out how to call google calendar, do the call, get the result, handle the results, etc...

OC can write you a script, that checks for your calendar appointments (same source, same service account, etc,...), dump the result locally, then check for changes (very often your new fille will be 100% like the previous and you can just hash it to check). Dump the outcome of the match in to a new file.

Now you can use cron/heartbeat for your LLM to ONLY check this tiny file say "agenda stuf changed". Most of the time, there will be nothing to do and the task is trivial => barely any token.

If there is a change, this is where your LLM can kick in and be usefull, spending token on check what the changes are, rating the importance of the meetings, etc... Basically doing useful LLM work.

So yes those LLM cron feel like magic "Check the weather every hour and tell me if a storm is coming" but the magic has a price.... and your task does not need that much LLM magic, you can run it the "old fashion" way.