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STT Realtime v5

soniox/stt-rt-v5

Live-audio flagship from Soniox, released June 16, 2026, streaming transcription in 60+ languages with rebuilt speaker separation, faster semantic endpointing for voice agents and live translation across 3,600+ language pairs.

API
curl "$AUDIOLAB_API_URL/v1/audio/transcriptions" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -F 'model=soniox/stt-rt-v5' \
  -F 'file=@recording.wav'
Input Price
$0.0017 / minute
Output Price
—
Input
Audio
Output
Text

Capabilities

Explore what STT Realtime v5 supports, then use the API section for a request tailored to this model.

BatchStreamDiarizationWord timestampsConfidence

Languages

Multilingual

Model Information

Provider
Soniox
Product
Speech-to-Text
Release Date
Jun 16, 2026
Data Policy
Not specified
Region
US
Input
Audio
Output
Text
Provider Documentation

Playground

Try STT Realtime v5 by Soniox. Requests use the selected workspace’s credits and API pricing.

STT Realtime v5Credits —
STT Realtime v5
Attach an audio file to turn speech into text.

Providers

Compare available endpoints, pricing, and context limits for STT Realtime v5.

ProviderContextOutputInput PriceOutput PriceEndpoint
SonioxNot specifiedText$0.0017 / minute—
soniox/stt-rt-v5:soniox

Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max bytesNot specified
Max seconds3600
Formatsaac, flac, mp3, mpeg, mpga, ogg, opus, wav, webm

Provider Notes

stt-async-v5 is the upload/create/poll model. stt-rt-v5 supports both AudioLab's uploaded-audio shim and open-ended live WebSocket sessions. Both support language identification, context, diarization, and native one-way or two-way translation; set translate=true together with provider.options.soniox.translation to choose the target behavior.

Performance

Status

Current catalog availability. Your workspace’s access is checked separately before a request runs.

Getting Started

Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.

API
curl "$AUDIOLAB_API_URL/v1/audio/transcriptions" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -F 'model=soniox/stt-rt-v5' \
  -F 'file=@recording.wav'
Read the Endpoint Reference

Request Parameters

Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.

ParameterDetails
modelsoniox/stt-rt-v5 — Required model identifier.
client_reference_idView Accepted Values
context (general fields, terms, text, translation terms)View Accepted Values
enable_language_identification / language_hints / language_hints_strictView Accepted Values
translation (one_way or two_way)View Accepted Values
webhook_url and webhook auth fields (async)View Accepted Values
enable_endpoint_detection / endpoint_latency_adjustment_levelView Accepted Values
endpoint_sensitivity / max_endpoint_delay_ms (realtime)View Accepted Values

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max bytesNot specified
Max seconds3600
Formatsaac, flac, mp3, mpeg, mpga, ogg, opus, wav, webm

Similar Models

Explore more speech-to-text and compare their capabilities.

ModelContextInput PriceOutput Price
STT Async v5SonioxNot specified$0.0014 / minute—
stt-rt-v4SonioxNot specified$0.0017 / minute—
stt-async-v4SonioxNot specified$0.0014 / minute—
stt-async-v3SonioxNot specified$0.0014 / minute—
stt-rt-v3SonioxNot specified$0.0017 / minute—
stt-rt-preview-v2SonioxNot specified$0.0017 / minute—
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