PII/PHI Redaction

PII/PHI Redaction transcribes audio, replaces detected PII/PHI spans with empty marker tags (e.g. <pii:name></pii:name>, <pii:ssn></pii:ssn>, <phi></phi>) in the transcript, and silences the matching ranges in the returned audio.

	Batch	Streaming
Use case	Transcription with audio redaction	Real-time transcription with audio redaction
Protocol	HTTP POST	WebSocket
Languages	Multilingual	Multilingual
Speaker diarization	✓	✓
PII/PHI audio redaction	✓	✓

Need PII/PHI flagged in the transcript but the audio left intact? Use the STT APIs with PII/PHI tagging instead.

For a side-by-side comparison with the other Modulate capabilities, see Which API should I use?.

Authentication

Batch uses the X-API-Key header. Streaming uses an api_key query parameter at connection time. See Authentication and rate limits.

⌘I

Velma

Speech-to-text Transcription

Deepfake Detection

Emotion Detection

Accent Detection