OpenAI TTS-1

Name: OpenAI TTS-1
Brand: OpenAI
SKU: openai-tts-1
Price: 0.018 USD
Availability: InStock

Konverzia textu na rečDostupné

od OpenAIopenai-tts-1

OpenAI's text-to-speech model. Six built-in voices with natural intonation.

Vyskúšať Získať API kľúč Porovnať

Cena: 0,018 USD/1 000 znakov
Vstup → výstup: Text → Audio
Vývojár: OpenAI
Aktualizované: 23. septembra 2026

Playground

Vyskúšajte OpenAI TTS-1

Vstup a výstup

0,018 USD/1 000 znakov

Text

Hlas(voliteľné)

Pokročilé nastavenia (1)

Formát(voliteľné)

⌘/Ctrl + Enter

Výsledok

Generovaná reč sa objaví tu.

Tento beh

0,0001 USD · 0,01 credits

Nový tu?

10 bezplatných credits (0,10 USD) pri registrácii cez Google

Použiteľné 24 hodín po registrácii, až 5 behov za deň a maximálne 2 credits za beh. Ostatné spôsoby prihlásenia sa spúšťajú bez credits. Stačí na 1 000 spustení tohto modelu.

O OpenAI TTS-1

StručneK 23. septembra 2026

OpenAI TTS-1 je model od OpenAI v kategórii Konverzia textu na reč. Na Railwail stojí OpenAI TTS-1 0,018 USD za 1 000 znakov.

Pozadie

O OpenAI

Založené 2015 · San Francisco, California, USA

OpenAI was founded in December 2015 by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, Wojciech Zaremba and John Schulman as a non-profit AI research lab. It restructured into the capped-profit OpenAI LP in 2019 and has since received over $13B from Microsoft plus billions more from Thrive Capital, Sequoia, Khosla and SoftBank, at a 2024 valuation north of $157B and a planned 2025 round reportedly at $500B. The audio research line at OpenAI includes Jukebox (2020), Whisper (2022) and the TTS-1 family released in November 2023 alongside the ChatGPT voice feature. TTS-1 powers ChatGPT Voice Mode, the OpenAI API audio endpoint and the Realtime API used in voice agents.

Navštíviť OpenAI

Architektúra

Proprietary Transformer text-to-speech with neural codec

OpenAI TTS-1 is the standard-quality variant of OpenAI's text-to-speech model family, optimised for real-time streaming inside ChatGPT Voice and the Realtime API. It is a Transformer-based model that predicts neural-codec audio tokens conditioned on text and a fixed set of stock voices (alloy, echo, fable, onyx, nova, shimmer) that OpenAI recorded with professional voice talent. There is no voice cloning. The model supports six output formats (MP3, Opus, AAC, FLAC, WAV, PCM) and outputs at 24 kHz. TTS-1 is tuned for low latency and starts streaming audio within a few hundred milliseconds, making it suitable for live conversational agents, while the HD sibling trades latency for fidelity. Text input is capped at 4,096 characters per request. OpenAI has not published a technical paper but the system architecturally resembles published neural-codec TTS such as VALL-E.

Parametre: Undisclosed
Kontext: 4 096 tokenov

Schopnosti

Real-time streaming TTS with sub-second first-byte latency
Six recorded voices: alloy, echo, fable, onyx, nova, shimmer
Multilingual: 50+ languages including English, German, Spanish, French, Italian, Japanese, Mandarin
Six output formats including streaming PCM for low latency
Powers ChatGPT Voice and the OpenAI Realtime API
Inexpensive at $0.015 per 1,000 characters (vs. $0.03 for HD)
Best for: voice agents, IVR, interactive narration, accessibility

Tréning a licencia

Not disclosed. OpenAI states voices were recorded with paid professional voice actors and the model was trained on a mixture of recorded speech and licensed text-audio pairs.

Licencia: Proprietary commercial API. Generated audio may be used commercially under the OpenAI Usage Policy; the six stock voices cannot be impersonated outside the API.

Bezpečnostné testy: OpenAI's Preparedness team red-teamed Voice Mode; outputs include watermark provenance metadata in the Realtime API where supported. Voice cloning is intentionally not exposed.

Známe obmedzenia

No custom voice cloning
Limited prosody / emotion control
Quality below TTS-1 HD on slow, emotional narration
Hard cap of 4,096 characters per request
Closed weights, hosted only

Výskumné články

Ceny

Ceny v USD. Použitie sa účtuje z predplateného kreditu.

1 000 znakov	0,018 USD za 1 000 znakov

1 kredit = 0,01 USD

Kalkulačka nákladov

Kalkulačka cien

Znaky na spustenie

/ spustenie

Spustenia

Celkom

1,80 USD

180 kreditov

Na spustenie

0,018 USD · 1,8 kreditov

Pevná cena za spustenie, známa pred spustením.

API

Zavolajte OpenAI TTS-1 s vaším API kľúčom Railwail. V požiadavke použite toto ID modelu:

openai-tts-1Dokumentácia API Získať API kľúč

curl https://railwail.com/api/v1/audio/speech \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai-tts-1",
    "input": "Hello from railwail. This sentence was spoken by a text-to-speech model.",
    "voice": "alloy"
  }' \
  --output speech.mp3

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["RAILWAIL_API_KEY"],
    base_url="https://railwail.com/api/v1",
)

with client.audio.speech.with_streaming_response.create(
    model="openai-tts-1",
    input="Hello from railwail. This sentence was spoken by a text-to-speech model.",
    voice="alloy",
) as response:
    response.stream_to_file("speech.mp3")

import fs from "node:fs";
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.RAILWAIL_API_KEY,
  baseURL: "https://railwail.com/api/v1",
});

const speech = await client.audio.speech.create({
  model: "openai-tts-1",
  input: "Hello from railwail. This sentence was spoken by a text-to-speech model.",
  voice: "alloy"
});

fs.writeFileSync("speech.mp3", Buffer.from(await speech.arrayBuffer()));

Nastavte svoj kľúč ako RAILWAIL_API_KEYVytvoriť API kľúč

Špecifikácie

ID modelu: openai-tts-1
Vývojár: OpenAI
Kategória: Konverzia textu na reč
Vstup: Text
Výstup: Audio
Formáty výstupu: MP3, OPUS, AAC, FLAC
Fakturácia: Pevná cena, známa pred spustením
Veľkosť modelu: Undisclosed
Licencia: Proprietary commercial API. Generated audio may be used commercially under the OpenAI Usage Policy; the six stock voices cannot be impersonated outside the API.
Katalógová položka aktualizovaná: 23. septembra 2026

Vstupné parametre

Vstupy a nastavenia zo vstupnej schémy modelu. Príklad v sekcii API ukazuje, ktoré z nich API akceptuje.

ParameterTypPredvolenéPovolené hodnoty

textpovinné
Typ: Text
Predvolené: –
Povolené hodnoty: –
voice
Typ: Výber
Predvolené: –
Povolené hodnoty: alloy, echo, fable, onyx, nova alebo shimmer
response_format
Typ: Výber
Predvolené: –
Povolené hodnoty: mp3, opus, aac alebo flac

Značky

fast
affordable

Príklady promptov

Príklady z katalógu Railwail. Neboli vygenerované živě na tejto stránke.

Notification Voice
Your order has been confirmed and is being prepared. Estimated delivery time is thirty-five minutes. You'll receive a notification when your driver is on the way.
Tutorial Guide
Step one: open your terminal and navigate to the project directory. Step two: run npm install to download all dependencies. Step three: create a dot env file and add your API keys. Finally, run npm run dev to start the development server.

Prípady použitia

Na čo sa používa

Real-time voice agents
ChatGPT Voice and conversational tutors
IVR and phone bot replies
Accessibility narration for web and mobile
Notification and alert audio

Súvisiace príručky

AI Voice & Text-to-Speech Models

Všetky modely v Konverzia textu na reč

Často kladené otázky

Čo je OpenAI TTS-1?

OpenAI TTS-1 je model od OpenAI v kategórii Konverzia textu na reč. Na Railwail ho môžete volať pomocou API kľúča cez Railwail API.

Koľko stojí OpenAI TTS-1 na Railwail?

Na Railwail stojí OpenAI TTS-1 0,018 USD za 1 000 znakov. Cena je známa pred spustením. Použitie sa platí z predplateného kreditu; 1 kredit sa rovná 0,01 USD.

Ktoré nastavenia podporuje OpenAI TTS-1?

Podľa svojej vstupnej schémy OpenAI TTS-1 pozná tieto parametre: text, voice (alloy, echo, fable, onyx, nova alebo shimmer) a response_format (mp3, opus, aac alebo flac).

Ako rýchly je OpenAI TTS-1?

Pre OpenAI TTS-1 je na Railwail zatiaľ príliš málo meraných spustení na určenie doby spustenia. Závisí to od vstupu, nastavení a zaťaženia u poskytovateľa.

Je OpenAI TTS-1 lepší ako AudioLDM 2?

Závisí to od úlohy. OpenAI TTS-1 (OpenAI) a AudioLDM 2 (Haohe Liu) sú oba modely v kategórii Konverzia textu na reč. Stránka porovnania zobrazuje ich ceny a špecifikácie vedľa seba.

Porovnať OpenAI TTS-1 a AudioLDM 2

Ako používam OpenAI TTS-1 cez API?

Vytvorte Railwail API kľúč a pošlite svoju požiadavku s ID modelu openai-tts-1. Príklady kódu pre curl, Python a JavaScript sú v časti API na tejto stránke.

Porovnateľné modely

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67 % drahšie na jednotku
Porovnať OpenAI TTS-1 a Chatterbox
OpenAI TTS-1 HDOpenAI
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Porovnať OpenAI TTS-1 a OpenAI TTS-1 HD
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Porovnať OpenAI TTS-1 a Qwen3 TTS

Použiť OpenAI TTS-1 cez API

Jeden API kľúč pre všetky modely na Railwail. Použitie sa účtuje z predplateného kreditu, 1 kredit = 0,01 USD.

Získať API kľúč Prehliadnuť všetky modely