There are already some providers offering cheap LLM services that will give you a response within 24 hours instead of within seconds. That allows them to schedule tasks during low-request hours when they have spare capacity and use better batching. For some automated tasks this is perfectly acceptable. A bit of effort to accommodate, but easy to justify when it halves your inference costs
OpenAI [1] as well as Azure OpenAI, Anthropic [2], as well as Parasail [3] for all the "open source" models. There are others that I was thinking of, but those are the first I could find without my notes. Typically the batch API is 50% cheaper than live inference