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Numerals

numerals boolean Default: false

Pre-recorded Streaming:NovaStreaming:Flux Specific languages only

Deepgram’s Numerals feature converts numbers from written format to numerical format. For example, the cardinal number “nine hundred” would appear in your transcript as “900”, and the ordinal number “nine hundredth” would appear in your transcript as “900th”.

Supported languages include:

  • Bulgarian: bg
  • Chinese (Cantonese, Traditional): zh-HK
  • Danish: da, da-DK
  • Dutch: nl
  • English: en, en-US, en-AU, en-GB, en-NZ, en-IN
  • French: fr, fr-CA
  • German: de
  • German (Switzerland): de-CH
  • Italian: it
  • Korean: ko, ko-KR
  • Malay: ms
  • Norwegian: no
  • Polish: pl
  • Portuguese: pt, pt-BR, pt-PT
  • Spanish: es, es-419
  • Swedish: sv, sv-SE
  • Russian: ru
  • Hebrew: he
  • Romanian: ro

Numerals are supported on both Flux models:

  • Flux English (model=flux-general-en) — full numeral formatting.
  • Flux Multilingual (model=flux-general-multi) — numeral formatting for English, Spanish, French, German, Russian, Portuguese, Italian, and Dutch. Numeral formatting is not currently supported for Hindi or Japanese.

On Flux STT, set the initial value with the numerals query parameter when you open the connection. To change it mid-stream, send a Configure message.

WebSocket"
wss://api.deepgram.com/v2/listen?model=flux-general-en&numerals=true&encoding=linear16&sample_rate=16000

To enable numerals, when you call Deepgram’s API, add a numerals parameter set to true in the query string:

numerals=true

To transcribe audio from a file on your computer, run the following cURL command in a terminal or your favorite API client.

Bash
curl \
  --request POST \
  --header 'Authorization: Token YOUR_DEEPGRAM_API_KEY' \
  --header 'Content-Type: audio/wav' \
  --data-binary @youraudio.wav \
  --url 'https://api.deepgram.com/v1/listen?numerals=true'

On the streaming API (/v1/listen), you can turn Numerals on or off at any point during the stream. Send the following JSON message to the WebSocket:

JSON
{
  "type": "Configure",
  "features": {
    "numerals": true
  }
}

Numerals can be turned on and off multiple times during a stream if desired.

On Flux STT (/v2/listen), send numerals as a top-level field in a Configure message, alongside type. Flux STT rejects the /v1/listen form nested under features and closes the connection.

JSON
{
  "type": "Configure",
  "numerals": true
}

Flux STT replies with a ConfigureSuccess message that echoes the full active configuration, including numerals. The update applies to transcripts Flux STT sends after it processes the message; it doesn’t reformat transcripts it has already sent. You can toggle numerals as many times as needed during a stream.

Once applied, results will appear in the transcript.

Source Before numerals After numerals
My account number is nine two eight four seven three seven three nine two three seven My account number is nine two eight four seven three seven three nine two three seven My account number is 9 2 8 4 7 3 7 3 9 2 3 7
Source Before numerals After numerals
My customer ID code is five one y w capital k capital p capital o six four one five lowercase d as in dog capital q lowercase p capital l z lowercase a m and then twenty three My customer ID code is five one y w capital k capital p capital o six four one five lowercase d as in dog capital q lowercase p capital l z lowercase a m and then twenty three My customer ID code is 5 1 y w capital k capital p capital o 6 4 1 5 lowercase d as in dog capital q lowercase p capital l z lowercase a m and then 23
Source Before numerals After numerals
My phone number is five five five two one two four three nine four and I live at five five five main street new york new york one zero zero zero five My phone number is five five five two one two four three nine four and I live at five five five main street new york new york one zero zero zero five My phone number is 5 5 5 2 1 2 4 3 9 4 and I live at 5 5 5 main street new york new york 1 0 0 0 5
Source Before numerals After numerals
My date of birth is june twenty eighth My date of birth is june twenty eighth My date of birth is june 28th
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