Optional alignedWhether this STT supports aligned transcripts with word/chunk timestamps.
Optional chatWhether the STT can natively consume conversation context (see STT._pushConversationItem)
Optional diarizationWhether this STT supports speaker diarization.
Optional keytermsWhether the STT supports keyterm prompting
Describes the capabilities of the STT provider.
Remarks
At present, the framework only supports providers that have a streaming endpoint.