Moduck

OpenAI: GPT Realtime Whisper

Streaming speech-to-text model for low-latency transcript deltas from live audio

Model lab
OpenAI
Model family
whisper
Modalitiesaudio → text
Context window16,000
Maximum output2,000
Audio input · Billed by input audio durationUSD 0.0002272 / second

Quickstart

Use your Moduck API Key, set the API base URL to https://api.moduck.ai/v1, and set the model parameter to openai/gpt-realtime-whisper.

import os
import requests

base_url = "https://api.moduck.ai/v1"
api_key = os.environ["MODUCK_API_KEY"]
model_id = "openai/gpt-realtime-whisper"

response = requests.post(
    f"{base_url}/chat/completions",
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    json={
        "model": model_id,
        "messages": [{"role": "user", "content": "Hello!"}],
        "stream": False,
    },
    timeout=60,
)
response.raise_for_status()
print(response.json())

Use the familiar OpenAI-style chat request format to make model integration easier.

GPT Realtime Whisper API Pricing

TypePrice information
Audio input · Billed by input audio durationUSD 0.0002272 / second

Performance

Measured on the Moduck gateway across live traffic, hour by hour over the last 24 hours. Time to first token is how long before anything appears; throughput is how fast the answer is written after that; end-to-end latency is the whole round trip. Figures are medians unless the card says otherwise.

Performance trends

Throughput87.6 tok/sCurrent
Time to first token1.5 sCurrent
End-to-end latency7.2 sCurrent
Throughput
Current87.6 tok/s
Window average89.1 tok/s
Time to first token
Current1.5 s
Window average1.4 s
End-to-end latency
Current7.2 s
Window average7.5 s
Tail latency (P99)
Current17.8 s
Window average17.0 s
Prompt cache hit rate
Current31.5%
Window average22.9%
Error rate
Current0.0%
Window average0.2%

Availability

Uptime is the share of time at least one provider serving this model responded. Availability is stricter: the share of requests actually served. A provider that answers but fails part of the traffic lowers availability without lowering uptime. Both cover the last three days.

Uptime100%At least one provider responded
Availability100%Requests actually served
Error rate0%Share of failed requests
Served requests, hour by hour
24 hours agoNow

GPT Realtime Whisper Compare models

ModelInput priceOutput priceContext windowCapabilities
GPT Realtime WhisperThis pageUSD 0.0002272 / second · Billed by input audio durationNot billed on output16,000Text output
Whisper 3 LargeUSD 0.00184 / 1M tokensUSD 0.00184 / 1M tokens448Text output
Whisper Large v3 TurboUSD 0.00184 / 1M tokensUSD 0.00184 / 1M tokens448Text output
Gemini 3.5 Transcribe LiveUSD 0.00012 / second · Billed by input audio durationNot billed on output—Text output
Grok Voice STT 1.0Price currently unavailablePrice currently unavailable15,000Text output

Model specifications

Input
audio
Output
text
Context window
16,000
Maximum output
2,000
Release date
2026-05-07
Attachments
No
Reasoning
No
Tool calling
No
Temperature setting
Yes
Open weights
No

Frequently asked questions

What is GPT Realtime Whisper for?

Streaming speech-to-text model for low-latency transcript deltas from live audio

What inputs and outputs does GPT Realtime Whisper support?

Recorded inputs: audio; outputs: text.

How is GPT Realtime Whisper priced?

The pricing table shows the current recorded Moduck price. For example: Audio input · Billed by input audio duration USD 0.0002272 / second. See the pricing table for all units, variants, and conditions.

What specifications are recorded for GPT Realtime Whisper?

Current model records list Context window 16,000 tokens; Maximum output 2,000 tokens.

What model parameter does the Quickstart use?

The example uses openai/gpt-realtime-whisper. This value comes from the page identifier and is not confirmed as a callable Moduck public ID.

Can I call this model through the Moduck API now?

This page has no verified Moduck API call for this model. A Quickstart example or reserved ID does not establish access; check the models available to your account.