Poll an audio-transcription job

Returns the state of a transcription job created when a request escalated to audio. 200 for any job your account owns (an unknown id, or a job belonging to someone else, is a 404): read the status field, which is "processing" while the job is running, "completed" with the transcript in data, or "failed" with an error. The job_id and a ready-to-use poll_url come back in the 202 that started it. Free to poll on our side - credits are charged once, on delivery (1 credit per started minute of audio, minimum 1). NOTE for RapidAPI subscribers: every poll is still a billable request on your Hub plan, so prefer callback_url, or simply re-send the original request once the job has had time to finish (the result is cached, so it returns instantly and the delivery is charged once, not twice). Most transcriptions never reach this endpoint at all: when we can determine the media length, media under 20 minutes is returned synchronously, and short-form platforms (TikTok and Instagram) are held inline even when we cannot.