OpenAI TTS-1

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

Pretvaranje teksta u govorDostupno

od OpenAIopenai-tts-1

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

Isprobaj Preuzmi API ključ Usporedi

Cijena: 0,018 US$/1.000 znakova
Ulaz → izlaz: Tekst → Audio
Razvojni inženjer: OpenAI
Ažurirano: 23. septembar 2026.

Playground

Isprobaj OpenAI TTS-1

Unos i rezultat

0,018 US$/1.000 znakova

Tekst

Glas(opcionalno)

Napredne postavke (1)

Format(opcionalno)

⌘/Ctrl + Enter

Rezultat

Generirani govor se pojavljuje ovdje.

Ovaj pokus

0,0001 US$ · 0,01 kredita

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Dostupno 24 sati nakon registracije, do 5 pokusa dnevno i najviše 2 kredita po pokusu. Ostale metode prijave počinju bez kredita. Dovoljno za 1.000 pokretanja ovog modela.

O OpenAI TTS-1

UkratkoStanje: 23. septembar 2026.

OpenAI TTS-1 je model od OpenAI iz kategorije Pretvaranje teksta u govor. Na Railwailu, OpenAI TTS-1 košta 0,018 US$ po 1.000 znakova.

Pozadina

O OpenAI

Osnovano 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.

Posjetite OpenAI

Arhitektura

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.

Parametri: Undisclosed
Kontekst: 4.096 tokena

Mogućnosti

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

Obuka i licenca

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.

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

Testiranje sigurnosti: 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.

Poznata ograničenja

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

Znanstveni članci

Cijene

Cijene u USD-u. Korištenje se naplaćuje iz unaprijed plaćenih kredita.

1.000 znakova	0,018 US$ po 1.000 znakova

1 kredit = 0,01 US$

Kalkulator troškova

Kalkulator cijena

Znakovi po pokretanju

/ pokretanje

Pokretanja

Ukupno

1,80 US$

180 kredita

Po pokretanju

0,018 US$ · 1,8 kredita

Fiksna cijena po pokretanju, poznata prije početka.

API

Pozovi OpenAI TTS-1 sa svojim Railwail API ključem. Koristi ovaj ID modela u zahtjevu:

openai-tts-1Pogledaj API dokumentaciju Dobij API ključ

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()));

Postavite ključ kao RAILWAIL_API_KEYKreiraj API ključ

Specifikacije

ID modela: openai-tts-1
Razvojni inženjer: OpenAI
Kategorija: Pretvaranje teksta u govor
Ulaz: Tekst
Izlaz: Audio
Formati izlaza: MP3, OPUS, AAC, FLAC
Naplata: Fiksna cijena, poznata prije pokretanja
Veličina modela: Undisclosed
Licenca: Proprietary commercial API. Generated audio may be used commercially under the OpenAI Usage Policy; the six stock voices cannot be impersonated outside the API.
Katalog ažuriran: 23. septembar 2026.

Parametri ulaza

Ulazi i postavke iz sheme ulaza modela. Primjer u odjeljku API pokazuje koje od njih API prihvaća.

ParametarTipZadanoDozvoljene vrijednosti

textobavezno
Tip: Tekst
Zadano: –
Dozvoljene vrijednosti: –
voice
Tip: Izbor
Zadano: –
Dozvoljene vrijednosti: alloy, echo, fable, onyx, nova ili shimmer
response_format
Tip: Izbor
Zadano: –
Dozvoljene vrijednosti: mp3, opus, aac ili flac

Oznake

fast
affordable

Primjer promptova

Primjeri iz Railwail kataloga. Nisu generirani uživo na ovoj stranici.

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.

Primjena

Za što se koristi

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

Povezani vodiči

AI Voice & Text-to-Speech Models

Svi modeli: Pretvaranje teksta u govor

Često postavljana pitanja

Što je OpenAI TTS-1?

OpenAI TTS-1 je model od OpenAI iz kategorije Pretvaranje teksta u govor. Na Railwailu ga možete pozvati s API ključem kroz Railwail API.

Koliko stoji OpenAI TTS-1 na Railwailu?

Na Railwailu, OpenAI TTS-1 košta 0,018 US$ po 1.000 znakova. Cijena je poznata prije nego što se pokretanje počne. Korištenje se plaća iz unaprijed kupljenih kredita; 1 kredit jednaka je 0,01 US$.

Koje postavke podržava OpenAI TTS-1?

Prema svojoj shemi unosa, OpenAI TTS-1 poznaje ove parametre: text, voice (alloy, echo, fable, onyx, nova ili shimmer) i response_format (mp3, opus, aac ili flac).

Koliko je brz OpenAI TTS-1?

Za OpenAI TTS-1 na Railwailu još nema dovoljno izmjerenih pokretanja da bi se navedlo vrijeme izvršavanja. Ovisi o unošenju, postavkama i opterećenju kod pružatelja.

Je li OpenAI TTS-1 bolji od AudioLDM 2?

To ovisi o zadatku. OpenAI TTS-1 (OpenAI) i AudioLDM 2 (Haohe Liu) su oba modela iz kategorije Pretvaranje teksta u govor. Stranica za usporedbu prikazuje njihove cijene i specifikacije usporedno.

Usporedi OpenAI TTS-1 i AudioLDM 2

Kako koristim OpenAI TTS-1 kroz API?

Kreiraj Railwail API ključ i pošalji svoj zahtjev s ID-om modela openai-tts-1. Primjeri koda za curl, Python i JavaScript nalaze se u odjeljku API na ovoj stranici.

Usporedivi modeli

Svi u ovoj kategoriji

ChatterboxResemble AI
Resemble AI's open Chatterbox TTS. Zero-shot voice cloning from a short audio prompt with an exaggeration control for emotion intensity, plus CFG weight to balance pacing and fidelity.
0,030 US$/1.000 znakova
67 % skupnije po jedinici
Usporedi OpenAI TTS-1 i Chatterbox
OpenAI TTS-1 HDOpenAI
OpenAI's high-definition TTS model. Better quality for production use cases.
0,036 US$/1.000 znakova
100 % skupnije po jedinici
Usporedi OpenAI TTS-1 i OpenAI TTS-1 HD
Qwen3 TTSAlibaba (Qwen)
A unified Text-to-Speech demo featuring three powerful modes: Voice, Clone and Design
0,024 US$/1.000 znakova
33 % skupnije po jedinici
Usporedi OpenAI TTS-1 i Qwen3 TTS

Koristi OpenAI TTS-1 preko API-ja

Jedan API ključ za sve modele na Railwailu. Korištenje se naplaćuje iz unaprijed plaćenih kredita, 1 kredit = 0,01 US$.

Dobij API ključ Pogledaj sve modele