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POST
/
v1
/
bridges
/
cognigy
/
stt
/
{model_variant}
Cognigy STT Bridge
curl --request POST \
  --url https://api.slng.ai/v1/bridges/cognigy/stt/{model_variant} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form audio='@example-file' \
  --form language=en
{
  "type": "transcription",
  "is_final": true,
  "alternatives": [
    {
      "confidence": 123,
      "transcript": "<string>"
    }
  ],
  "channel": 123,
  "language": "<string>"
}

Authorizations

​
Authorization
string
header
required

API key issued by SLNG. Pass as Authorization: Bearer <token>.

Path Parameters

​
model_variant
enum<string>
required

Target STT model. Must support WebSocket streaming with final_transcript.

Available options:
deepgram/nova:2,
deepgram/nova:3,
deepgram/nova:3-medical,
gradium/stt:default,
reson8/reson8stt:v1,
sarvam/saaras:v3,
slng/deepgram/nova:3-en,
slng/deepgram/nova:3-es,
slng/deepgram/nova:3-hi,
slng/deepgram/nova:3-in,
slng/deepgram/nova:3-kn,
slng/deepgram/nova:3-mr,
slng/deepgram/nova:3-multi,
slng/deepgram/nova:3-te,
slng/openai/whisper:large-v3,
soniox/speech-ai:rt-v4

Query Parameters

​
region
enum<string>

Target region override. Auto-selected if not provided. Equivalent to the X-Region-Override header; the header takes precedence when both are set.

Available options:
ap-southeast-2,
eu-north-1,
us-east-1
​
world-part
enum<string>

Target world part override. Auto-selected if not provided. Equivalent to the X-World-Part-Override header; the header takes precedence when both are set.

Available options:
ap,
eu,
na

Body

Cognigy STT request. Provide either audio (multipart upload) or url (publicly accessible HTTPS URL).

​
audio
file

Audio file (multipart) or base64-encoded audio (JSON).

​
url
string

Publicly accessible audio URL.

Example:

"https://docs.slng.ai/audio/hello.wav"

​
language
string

Language code.

Response

Transcription successful.

Cognigy STT transcription response.

​
type
enum<string>
required

Response type.

Available options:
transcription
​
is_final
boolean
required

Whether this is a final transcription.

​
alternatives
object[]
required

Transcription alternatives.

​
channel
integer

Audio channel number.

​
language
string

Detected language code.