This post, found on hackernews, is about a clever insight. It turns out that OpenAI prices their voice-to-text service per minute and if you want to pay less for this service ... you might be better off speeding up the audio.

There's an upper limit to what you can achieve, obviously, to quote the article:

4x speed? Probably too much—but fun to try.

Another solid pro-tip is to remove pauses from the audio. The timestamps might no longer fit, but if all you're interested in is the text this is also a valid strategy.

Clever article! Great read!