OpenAI TTS-1 HD

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

Texti-í-talTiltækt

eftir OpenAIopenai-tts-1-hd

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

Prófaðu það Fáðu API-lykil Bera saman

Verð: 0,036 USD/1.000 stafir
Inntak → úttak: Texti → Hljóð
Þróunaraðili: OpenAI
Uppfært: 23. september 2026

Leiksvæði

Prófaðu OpenAI TTS-1 HD

Inntak og úttak

0,036 USD/1.000 stafir

Texti

Rödð(valfrjálst)

Ítarlegar stillingar (1)

Snið(valfrjálst)

⌘/Ctrl + Enter

Niðurstaða

Talið sem búið var til birtist hér.

Þessi keyrsla

0,0001 USD · 0,01 inneign

Nýr hér?

10 ókeypis inneign (0,10 USD) þegar þú skráir þig með Google

Hægt að nota 24 klst. eftir skráningu, allt að 5 keyrslur á dag og að hámarki 2 inneign á keyrslu. Aðrar innskráningaraðferðir byrja án inneignar. Nægir fyrir 1.000 keyrslur þessa módels.

Um OpenAI TTS-1 HD

StuttlegaFrá og með 23. september 2026

OpenAI TTS-1 HD er módel frá OpenAI í flokknum Texti-í-tal. Á Railwail kostar OpenAI TTS-1 HD 0,036 USD fyrir 1.000 stafi.

Bakgrunnur

Um OpenAI

Stofnað 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.

Heimsækja OpenAI

Arkitektúr

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.

Breytur: Undisclosed (larger than TTS-1)
Samhengi: 4.096 tákn

Geta

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

Þjálfun og leyfi

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.

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

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

Þekkt takmörk

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

Rannsókargreinar

Verðlagning

Verð í Bandaríkjadölum. Notkun er rukkuð frá fyrirframgreiddum inneign.

1.000 stafir	0,036 USD fyrir 1.000 stafi

1 inneign = 0,01 USD

Kostnaðarreiknir

Verðreiknir

Stafir á hverri keyrslu

/ keyrsla

Keyrslur

Samtals

3,60 USD

360 inneign

Fyrir hverja keyrslu

0,036 USD · 3,6 inneign

Fastur verð fyrir hverja keyrslu, þekkt fyrir keyrslu hefst.

API

Kallaðu OpenAI TTS-1 HD með Railwail API-lyklinum þínum. Notaðu þessa módel-auðkenningu í beiðninni:

openai-tts-1-hdAPI-skjöl Fáðu API-lykil

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()));

Stilltu lykil þinn sem RAILWAIL_API_KEYBúa til API-lykil

Forskriftir

Módel-auðkenni: openai-tts-1-hd
Þróunaraðili: OpenAI
Flokkur: Texti-í-tal
Inntak: Texti
Úttak: Hljóð
Úttak snið: MP3, OPUS, AAC, FLAC
Reikningur: Föst verð, þekkt fyrir keyrslu
Stærð módels: Undisclosed (larger than TTS-1)
Leyfi: Proprietary commercial API. Generated audio may be used commercially under the OpenAI Usage Policy; the six stock voices cannot be impersonated outside the API.
Vörulistafærsla uppfærð: 23. september 2026

Inntaksbreytur

Inntak og stillingar úr inntakskerfi módelsins. Dæmið í API-hlutanum sýnir hverjar þeirra API samþykkir.

BreytuTegundSjálfgefiðLeyfðir gildir

textnauðsynlegt
Tegund: Texti
Sjálfgefið: –
Leyfðir gildir: –
voice
Tegund: Val
Sjálfgefið: –
Leyfðir gildir: alloy, echo, fable, onyx, nova eða shimmer
response_format
Tegund: Val
Sjálfgefið: –
Leyfðir gildir: mp3, opus, aac eða flac

Merki

high-quality

Dæmi um leiðsögn

Dæmi úr Railwail-vörulistanum. Þau voru ekki mynduð lifandi á þessari síðu.

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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Notkunartilvik

Það sem það er notað fyrir

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

Tengdar leiðbeiningar

AI Voice & Text-to-Speech Models

Öll módel í Texti-í-tal

Algengar spurningar

Hvað er OpenAI TTS-1 HD?

OpenAI TTS-1 HD er módel frá OpenAI í flokknum Texti-í-tal. Á Railwail geturðu kallað það með API-lykli í gegnum Railwail API.

Hvað kostar OpenAI TTS-1 HD á Railwail?

Á Railwail kostar OpenAI TTS-1 HD 0,036 USD fyrir 1.000 stafi. Verðið er þekkt áður en keyrslan hefst. Notkun er greidd úr fyrirframgreiddum inneign; 1 inneign jafngildir 0,01 USD.

Hvaða stillingar styður OpenAI TTS-1 HD?

Samkvæmt inntaksskema sínu þekkir OpenAI TTS-1 HD þessa færibreytu: text, voice (alloy, echo, fable, onyx, nova eða shimmer) og response_format (mp3, opus, aac eða flac).

Hversu hratt er OpenAI TTS-1 HD?

Það eru ekki nóg mældar keyrslur af OpenAI TTS-1 HD á Railwail ennþá til að tilgreina keyrslutíma. Það fer eftir inntakinu, stillingum og álagi hjá veitandanum.

Er OpenAI TTS-1 HD betra en AudioLDM 2?

Það fer eftir verkefninu. OpenAI TTS-1 HD (OpenAI) og AudioLDM 2 (Haohe Liu) eru bæði módel í flokknum Texti-í-tal. Samanburðarsíðan sýnir verð og forskriftir þeirra hlið við hlið.

Bera saman OpenAI TTS-1 HD og AudioLDM 2

Hvernig nota ég OpenAI TTS-1 HD í gegnum API?

Búðu til Railwail API-lykil og sendu beiðni þína með módel-auðkenninu openai-tts-1-hd. Kóðadæmi fyrir curl, Python og JavaScript eru í API-hlutanum á þessari síðu.

Sambærileg módel

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Notaðu OpenAI TTS-1 HD í gegnum API

Einn API-lykil fyrir öll módel á Railwail. Notkun er rukkuð frá fyrirframgreiddum inneign, 1 inneign = 0,01 USD.

Fáðu API-lykil Skoðaðu öll módel