I've already done that [1]. A fraction of the price, 24-hour limit per file, and speedup tricks like the OP's are welcome. :)

[1] https://speechischeap.com

Nice. Don't expect you to spill the beans but is it doing OK (some customers?)

Just wondering if I cam build a retirement out of APIs :)

It's sustainable, but not enough to retire on at this point.

> Just wondering if I cam build a retirement out of APIs :)

I think it's possible, but you need to find a way to add value beyond the commodity itself (e.g., audio classification and speaker diarization in my case).

Can it do real-time transcription with diarization? I'm looking for that for a product feature I'm working on. Currently I've seen Speechmatics do this well, haven't heard of others.

Not yet. The gains in efficiency come from optimizing the speedup factor. Real-time audio cannot be processed any faster than 1× by definition.

Pre-processing of the audio still a valid biz, multiple types of pre-processing might be valid

Sure, but now the world is a better place because he shared something useful!

Or openai will do it themselves for transcription tasks