OpenAI TTS-1 HD

Name: OpenAI TTS-1 HD
Brand: OpenAI
SKU: openai-tts-1-hd
Price: 0.036 USD
Availability: InStock

Teksti kõneksSaadaval

OpenAI pooltopenai-tts-1-hd

OpenAI's high-definition TTS model. Better quality for production use cases.

Proovi Hangi API võti Võrdle

Hind: 0,036 $/1000 märki
Sisend → väljund: Tekst → Audio
Arendaja: OpenAI
Uuendatud: 23. september 2026

Playground

Proovi OpenAI TTS-1 HD

Sisend ja väljund

0,036 $/1000 märki

Tekst

Hääl(valikuline)

Täpsemad seaded (1)

Vorming(valikuline)

⌘/Ctrl + Enter

Tulemus

Genereeritud kõne ilmub siia.

See käivitus

0,0001 $ · 0,01 krediiti

Oled siin uus?

10 tasuta krediiti (0,10 $), kui registreeritud Google'iga

Kasutatav 24 tundi pärast registreerimist, kuni 5 käivitust päevas ja maksimaalselt 2 krediiti käivituse kohta. Muud sisselogimismeetodid algavad ilma krediitideta. Piisab 1000 käivituseks sellest mudelist.

Teave: OpenAI TTS-1 HD

LühidaltSeisuga 23. september 2026

OpenAI TTS-1 HD on mudel, mille on välja töötanud OpenAI kategoorias Teksti kõneks. Railwail'is maksab OpenAI TTS-1 HD 0,036 $ 1000 märgi kohta.

Taust

Teave OpenAI kohta

Asutatud 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, restructured to capped-profit OpenAI LP in 2019. The company is best known for the GPT, DALL-E and Whisper model families and has raised more than $13B from Microsoft and billions more from Thrive Capital, Sequoia, Khosla and SoftBank, with a 2024 valuation above $157B. The TTS-1 HD model launched together with TTS-1 in November 2023 as the high-quality sibling, intended for offline audiobook, podcast and content-production workflows where fidelity matters more than latency. It powers the higher-quality option in the OpenAI audio endpoint and is exposed in tools like ChatGPT's Read Aloud feature on premium tiers.

Külasta OpenAI

Arhitektuur

Proprietary Transformer text-to-speech with neural codec (high-fidelity variant)

OpenAI TTS-1 HD is the high-fidelity variant of the TTS-1 family. It uses the same architectural family (Transformer-based neural-codec language-model TTS) and the same six voices (alloy, echo, fable, onyx, nova, shimmer) as TTS-1, but with a larger model and additional fine-tuning on long-form narration. The result is more natural prosody, clearer diction and better handling of long sentences, punctuation and emotional pacing, at roughly 2x the price ($0.030 per 1,000 characters) and noticeably higher latency. Output is 24 kHz in six formats (MP3, Opus, AAC, FLAC, WAV, PCM). Text input is capped at 4,096 characters per request, which is recommended to be split into paragraph chunks for very long narration. The model targets offline production: audiobooks, podcasts, training videos, accessibility narration. It does not support voice cloning.

Parameetrid: Undisclosed (larger than TTS-1)
Kontekst: 4096 tokenit

Võimalused

High-fidelity narration with natural prosody and emotional pacing
Six recorded voices: alloy, echo, fable, onyx, nova, shimmer
Multilingual: 50+ languages including English, German, Spanish, French, Italian, Japanese, Mandarin
Six output formats including FLAC for lossless production
Long-sentence handling tuned for audiobook-style narration
Drop-in API-compatible with TTS-1 (just change the model name)
Best for: audiobooks, podcasts, training content, voiceover, accessibility narration

Treening ja litsents

Not disclosed. OpenAI states voices were recorded with paid professional actors; training corpus is a curated mix of recorded speech and licensed text-audio pairs.

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

Turvalisuse testimine: Same Preparedness red-team coverage as TTS-1; voice cloning is intentionally not exposed; outputs may carry provenance metadata.

Teadaolevad piirangud

No voice cloning
2x price of TTS-1 ($0.030 vs $0.015 per 1k chars)
Higher latency unsuitable for real-time voice agents
Hard cap of 4,096 characters per request
Limited explicit prosody / emotion controls

Teadusartiklid

Hinnad

Hinnad USA dollarites. Kasutamine arvestatakse eelmakstud krediitidest.

1000 märki	0,036 $ 1000 märgi kohta

1 krediit = 0,01 $

Kulukalkulaator

Hinna kalkulaator

Märgid käivituse kohta

/ käivitus

Käivitused

Kokku

3,60 $

360 krediiti

Käivituse kohta

0,036 $ · 3,6 krediiti

Fikseeritud hind käivituse kohta, teada enne käivituse algust.

API

Kutsu OpenAI TTS-1 HD oma Railwail API võtmega. Kasuta selles päringus seda mudeli ID-d:

openai-tts-1-hdVaata API dokumentatsiooni Hangi API võti

curl https://railwail.com/api/v1/audio/speech \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai-tts-1-hd",
    "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-hd",
    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-hd",
  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()));

Määra oma võti kui RAILWAIL_API_KEYLoo API-võti

Spetsifikatsioonid

Mudeli ID: openai-tts-1-hd
Arendaja: OpenAI
Kategooria: Teksti kõneks
Sisend: Tekst
Väljund: Audio
Väljundvormingud: MP3, OPUS, AAC, FLAC
Arveldamine: Fikseeritud hind, teada enne käivitamist
Mudeli suurus: Undisclosed (larger than TTS-1)
Litsents: Proprietary commercial API. Generated audio may be used commercially under the OpenAI Usage Policy; the six stock voices cannot be impersonated outside the API.
Kataloogi kirje uuendatud: 23. september 2026

Sisendparameetrid

Mudeli sisendiskeemi sisendid ja seaded. API näide jaotises API näitab, milliseid neist API aktsepteerib.

ParameeterTüüpVaikimisiLubatud väärtused

textnõutav
Tüüp: Tekst
Vaikimisi: –
Lubatud väärtused: –
voice
Tüüp: Valik
Vaikimisi: –
Lubatud väärtused: alloy, echo, fable, onyx, nova või shimmer
response_format
Tüüp: Valik
Vaikimisi: –
Lubatud väärtused: mp3, opus, aac või flac

Sildid

high-quality

Näite-prompid

Näited Railwail kataloogist. Neid ei loodud otse sellel lehel.

Audiobook Passage
The old lighthouse keeper climbed the spiral stairs for the last time. Forty years of storms, shipwrecks, and solitary nights had carved deep lines into his face. But tonight, as the automated beacon flickered to life without him, he felt not relief but an aching emptiness—the sea no longer needed his watchful eyes.
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Kasutamise juhtumid

Milleks seda kasutatakse

Audiobook production
High-quality podcast narration
Training and e-learning voiceover
Marketing videos and explainer content
Accessibility narration for premium products

Seotud juhendid

AI Voice & Text-to-Speech Models

Kõik mudelid: Teksti kõneks

Korduma kippuvad küsimused

Mis on OpenAI TTS-1 HD?

OpenAI TTS-1 HD on mudel, mille töötas välja OpenAI kategoorias Teksti kõneks. Railwail'is saad seda kutsuda API võtme abil Railwail API kaudu.

Kui palju maksab OpenAI TTS-1 HD Railwail'is?

Railwail'is maksab OpenAI TTS-1 HD 0,036 $ 1000 märgi kohta. Hind on teada enne käivitamist. Kasutamine makstakse eelnevalt ostetud krediitidest; 1 krediit võrdub 0,01 $.

Milliseid seadistusi OpenAI TTS-1 HD toetab?

Vastavalt sisendiskeemile teab OpenAI TTS-1 HD neid parameetreid: text, voice (alloy, echo, fable, onyx, nova või shimmer) ja response_format (mp3, opus, aac või flac).

Kui kiire on OpenAI TTS-1 HD?

OpenAI TTS-1 HD kohta ei ole Railwail'is veel piisavalt mõõdetud käivitusi, et käivitusaega väita. See sõltub sisendist, seadistustest ja pakkuja koormusest.

Kas OpenAI TTS-1 HD on parem kui AudioLDM 2?

See sõltub ülesandest. OpenAI TTS-1 HD (OpenAI) ja AudioLDM 2 (Haohe Liu) on mõlemad mudelid kategoorias Teksti kõneks. Võrdlusleht näitab nende hindu ja spetsifikatsioone kõrvuti.

Võrdle OpenAI TTS-1 HD ja AudioLDM 2

Kuidas kasutada OpenAI TTS-1 HD API kaudu?

Loo Railwail API võti ja saada oma päring mudeli ID-ga openai-tts-1-hd. Koodinäited curl'i, Pythoni ja JavaScripti jaoks on selle lehe API jaotises.

Võrreldavad mudelid

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Kasuta OpenAI TTS-1 HD API kaudu

Üks API võti kõigile Railwail mudelitele. Kasutamine arvestatakse eelmakstud krediitidest, 1 krediit = 0,01 $.

Hangi API võti Vaata kõiki mudeleid