Official documentation
Pre-recorded audio (AssemblyAI documentation)
AssemblyAI, n.d.
Read the originalRead on October 17, 2026
- What it is
- AssemblyAI's developer guide to transcribing pre-recorded audio through its API. It shows a transcription request that takes an audio_url, and says a local file must be uploaded first.
- How much weight it carries
- The vendor's own API documentation, so it is the authority on what its API accepts, but it describes one provider's API only and the code samples change over time. Check the current API reference before building on it.
Facts taken from this source
- AssemblyAI's guide to pre-recorded audio says that to transcribe a local file, you must upload it first, so the service can then transcribe it.
“To transcribe a local file, upload it first” (Transcribe a local file)