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Welcome to Destined Voice API

Destined Voice provides enterprise-grade Text-to-Speech (TTS) with the largest collection of consented, diverse speaker voices available via API.

Why Destined Voice?

10,000+ Real Voices

Diverse demographics including gender, age, region, and accent. All voices are from consented speakers.

Voice Generation

Generate new custom voices for your evals.

Voice Agent Evals

Evaluate 9+ speech-to-text providers with WER/CER metrics and demographic bias analysis.

Batch Processing

Generate audio for multiple speakers asynchronously with job tracking.

Quick Example

import { SDK } from "@destined-ai/voice";

const client = new SDK({
  bearerToken: process.env.DESTINED_API_KEY,
});

// Generate speech
const audio = await client.ttsGeneration.synthesizeSpeechV1TtsSynthesizePost({
  speakerId: "speaker-uuid",
  text: "Hello, welcome to Destined Voice!",
});

console.log(audio.audioUrl);

Features

FeatureDescription
TTS SynthesisConvert text to natural speech using any speaker voice
Speaker BrowseFilter speakers by gender, age, region, accent
Batch JobsProcess multiple synthesis requests asynchronously
STT EvaluationTest 9 providers: Deepgram, AssemblyAI, OpenAI, Google, Azure, Amazon, Soniox, Play.ht
Dataset ImportUpload CSV files for bulk TTS generation
Usage TrackingMonitor character usage and API calls

Pricing

FeatureStarterProEnterprise
Price$0/month$500/month$5,000/month
Evals/month1UnlimitedUnlimited
Characters1,000100,0001,000,000
Real voices5005,00010,000+
Custom voicesUnlimitedUnlimitedUnlimited

Next Steps