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STT Rt V4 API Pricing

1 providersoniox/stt-rt-v4
Price
$0.002 per minute of audio
Added

As of November 15, 2026, STT Rt V4 costs $0.002 per minute of audio on Soniox.

Prices updated Checked
Retired. Soniox retired soniox/stt-rt-v4 on June 30, 2026. Prices below are the last listed and kept for reference.

STT Rt V4 pricing by provider

1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

STT Rt V4 prices by provider in US dollars, token prices per 1M tokens, as of November 15, 2026. Source: LiteLLM model price file.
ProviderModel name in LiteLLMPer minuteContext
Sonioxsoniox/stt-rt-v4$0.002–

What STT Rt V4 costs in practice

Transcribing 1,000 minutes of audio

Soniox$2.00

STT Rt V4 features

Input: audio. Output: text.

Use STT Rt V4 with LiteLLM

Call STT Rt V4 through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/audio/transcriptions. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import transcription

response = transcription(
    model="soniox/stt-rt-v4",
    file=open("audio.mp3", "rb"),
)
Proxy config.yaml
model_list:
  - model_name: stt-rt-v4
    litellm_params:
      model: soniox/stt-rt-v4
      # credentials: see the provider's LiteLLM docs page
Call the proxy
curl http://0.0.0.0:4000/v1/audio/transcriptions \
  -H "Authorization: Bearer $LITELLM_API_KEY" \
  -F model="stt-rt-v4" \
  -F file=@audio.mp3

STT Rt V4 FAQ

How much does STT Rt V4 cost?

STT Rt V4 costs $0.002 per minute of audio on Soniox.

Which providers offer STT Rt V4?

STT Rt V4 is available from Soniox through LiteLLM, using the model name soniox/stt-rt-v4.

How do I call STT Rt V4 with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="soniox/stt-rt-v4", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/audio/transcriptions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

What features does STT Rt V4 support?

STT Rt V4 supports audio input.

When did LiteLLM add STT Rt V4?

STT Rt V4 was added to LiteLLM's model price file on October 30, 2026.

Is STT Rt V4 being deprecated?

Soniox deprecated soniox/stt-rt-v4 on June 30, 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change. Provider pricing pages:

LiteLLM docs: Soniox.

Provider pages: Soniox.