Huge voice library · Multilingual synthesis

AI Text to Speech - Lifelike Voice Generation

Turn any text into natural-sounding speech for short videos, course narration, ads, and audiobooks. Multilingual support with a vast voice library on demand.

Free plan available
🇺🇸 ENGLISH (SOURCE)
🇨🇳 CHINESE (TRANSLATED)
LW
Li Wei
Neutral • Storytelling

Who uses Text to Speech

Real workflows from teams creating for global audiences

Short-video Voiceover

Synthesize scripts directly — no recording booth, no scheduling.

Course & Tutorial Narration

Batch-synthesize long texts with steady pacing and a professional sound.

Ad & Promo Reads

Promo copy changes constantly — edit the text and a new voiceover is ready.

Audiobooks

Pick a narrator voice and keep a consistent reading style across every chapter.

Core Features

Natural Prosody

Human-like intonation and rhythm

  • Expressive speech
  • Correct pronunciation
  • Emotion control

Huge Voice Library

Choose from hundreds of voices

  • Diverse accents
  • Various ages/genders
  • Custom styles

Fast Generation

Seconds for short text, under a minute for long scripts

  • Low latency
  • Long text support
  • Download MP3

How it works under the hood

A look inside the pipeline — every step is driven by real engines

01

Text Parsing

Polyphonic characters, numbers, and abbreviations read correctly in context

02

Prosody Prediction

Phrasing and pauses close to a human read

03

Neural Synthesis

Output naturalness close to professional studio recordings

04

Online Tuning

Adjust speed and volume, preview, then export

User Guide

1

Enter Text

Type or paste your text

2

Select Voice

Choose the perfect voice

3

Generate

Get high-quality audio instantly

Specs and limits

The hard facts you need before submitting, at a glance

VoicesSystem library + custom cloned voices
LanguagesMultilingual synthesis
Text lengthUp to 10,000 characters per request
Output formatMP3
PreviewAudition any voice before synthesizing

vs. Human Voice Recording

Cost

Voice actor / recording yourself: Priced per take or per hour

Oiiyao: Pay per use — scales down with volume

Turnaround

Voice actor / recording yourself: Scheduling, recording, revisions

Oiiyao: Fast synthesis

Revisions

Voice actor / recording yourself: Re-record every change

Oiiyao: Edit the text and regenerate

Voice choice

Voice actor / recording yourself: One person, one voice

Oiiyao: Switch voices anytime from a huge library

Frequently Asked Questions

Take Your Video Content Global

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