Omnivoice Text to Speech | Realistic Voice & TTS API

OmniVoice Text-to-Speech

OmniVoice Text-to-Speech converts any text into natural, expressive speech in 600+ languages. Choose from a set of voice attributes — gender, age, pitch, accent — and the model generates matching audio in seconds. No voice sample needed.

Why Choose This?

Attribute-driven voice design Pick from predefined voice attributes (gender, age, pitch, accent) to create your ideal voice — no audio sample required.
600+ languages The broadest language coverage among zero-shot TTS models.
Speed control Adjust the speaking rate to match your content pacing needs.
Fast generation Output delivered in under 5 seconds.

Parameters

Parameter	Required	Description
text	Yes	The text you want converted to speech.
voice_description	No	Comma-separated voice attributes (see list below). If omitted, a random voice is used.
speed	No	Playback speed factor. 1.0 = normal. Range: 0.1–5.0.

Valid Voice Attributes

Combine any of these with commas (e.g. female, low pitch, british accent):

Gender: female, male

Age: child, teenager, young adult, middle-aged, elderly

Pitch: very low pitch, low pitch, moderate pitch, high pitch, very high pitch

Style: whisper

Accent: american accent, australian accent, british accent, canadian accent, chinese accent, indian accent, japanese accent, korean accent, portuguese accent, russian accent

Examples

female, low pitch, british accent
male, young adult, american accent
female, elderly, whisper
male, high pitch, indian accent

How to Use

Enter your text — type or paste the content you want spoken.
Choose voice attributes (optional) — combine gender, age, pitch, and accent attributes separated by commas.
Set speed (optional) — adjust the speaking rate if needed.
Submit — generate and download your audio in seconds.

Pricing

Text Length	Cost
Under 100 chars	$0.005 (flat)
100 chars	$0.005
500 chars	$0.025
1000 chars	$0.050

Best Use Cases

Content creation — Generate voiceovers for videos, ads, and social media.
Audiobook & podcast production — Convert written content into listenable audio at scale.
App & product demos — Add natural speech to prototypes and presentations.
Accessibility — Convert text content into audio for audio-first audiences.
Multilingual apps — Generate speech in 600+ languages from a single model.

Pro Tips

Combine 2–3 attributes for best results (e.g. female, young adult, british accent).
Omit voice_description entirely for a random voice — useful for variety in batch generation.
Use whisper for ASMR-style or intimate content.
Adjust speed to 0.8 for calm narration or 1.3 for energetic delivery.

Related Models

OmniVoice Voice Clone — Clone a specific voice from a reference audio sample.

Omnivoice Text To Speech API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/wavespeed-ai/omnivoice/text-to-speech with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Omnivoice Text To Speech below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/omnivoice/text-to-speech" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "speed": 1
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("wavespeed-ai/omnivoice/text-to-speech", {
        "speed": 1
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "wavespeed-ai/omnivoice/text-to-speech",
    {
    "speed": 1
}
)

print(output["outputs"][0])  # → URL of the generated output

Omnivoice Text To Speech API — Frequently asked questions

What is the Omnivoice Text To Speech API?

Omnivoice Text To Speech is a WaveSpeedAI model for audio generation, exposed as a REST API on WaveSpeedAI. OmniVoice is a massively multilingual zero-shot TTS supporting 600+ languages. Generate speech with auto voice or design custom voices using natural language descriptions. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Omnivoice Text To Speech API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/wavespeed-ai/omnivoice-text-to-speech.

How much does Omnivoice Text To Speech cost per run?

Omnivoice Text To Speech starts at $0.005 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Omnivoice Text To Speech accept?

Key inputs: `speed`, `text`, `voice_description`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/wavespeed-ai/omnivoice-text-to-speech.

How do I get started with the Omnivoice Text To Speech API?

Sign up for a free WaveSpeedAI account to claim starter credits, copy your API key from /accesskey, then call the endpoint shown in the API tab of the playground. The playground also auto-generates a code sample in Python, JavaScript, or cURL for the parameters you've set.

Can I use Omnivoice Text To Speech outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (WaveSpeedAI). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

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