AssemblyAI API · Endpoint removal
speech_model on POST /v2/transcript is deprecated
Deprecated, no date
AssemblyAI API deprecated POST /v2/transcript, body parameter speech_model without giving a shutdown date yet.
What to use instead of these calls
Send speech_models (a list, e.g. ["universal-3-5-pro", "universal-2"]) instead of speech_model to pin a model.
Calls it hits
POST /v2/transcriptbody parameter speech_model
Deprecated: Async speech_model Parameter Passing a current model name ( universal-2 , universal-3-5-pro ) to the async speech_model field now returns a 400.
Facts
- API
- AssemblyAI API
api.assemblyai.com - Kind
- Endpoint removal
- Announced
- July 10, 2026
- Takes effect
- No date given yet
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
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