Spanish TTS API: batch narration with Audra Essential — Audra

Spanish is the highest-leverage localization for most English products — and the easiest TTS locale to get subtly wrong. Three es Essential presets (lucia, mateo, noel) cover course, podcast, and IVR narration at the same $25/1M characters as English.

Spanish voice slugs on Essential

• lucia — neutral Castilian female, default for course narration
• mateo — male read for podcast and documentary pacing
• noel — alternate register for IVR and short prompts
• Three slugs is thin — A/B all three on /compare before a large batch; Plus adds presets if none fit

Spanish-specific notes

• These are es (Castilian) presets: vosotros forms and European vocabulary read naturally; Latin-American scripts should still test well
• Accents are load-bearing — never strip diacritics; normalized ASCII input causes stress errors
• ¿ and ¡ control intonation contours; keep them in input text
• Numbers with decimals: es voices read the European convention by default — verify pricing copy in samples

Example request in Spanish (es-ES)

curl
curl https://audratalks.com/v2/speech \
  -H "Authorization: Bearer sk-live-YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"audra-essential","text":"Bienvenidos a la lecci\u00f3n tres: en este cap\u00edtulo veremos c\u00f3mo funciona la cola de renderizado.","voice":"lucia","language":"es-ES","format":"mp3"}' \
  --output out.mp3

Python
import requests

r = requests.post(
    "https://audratalks.com/v2/speech",
    headers={"Authorization": "Bearer sk-live-YOUR_KEY"},
    json={
        "model": "audra-essential",
        "text": 'Bienvenidos a la lección tres: en este capítulo veremos cómo funciona la cola de renderizado.',
        "voice": "lucia",
        "language": "es-ES",
        "format": "mp3",
    },
    timeout=120,
)
r.raise_for_status()
open("out.mp3", "wb").write(r.content)

JavaScript
import { writeFile } from "node:fs/promises";

const res = await fetch("https://audratalks.com/v2/speech", {
  method: "POST",
  headers: {
    Authorization: "Bearer sk-live-YOUR_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "audra-essential",
    text: 'Bienvenidos a la lección tres: en este capítulo veremos cómo funciona la cola de renderizado.',
    voice: "lucia",
    language: "es-ES",
    format: "mp3",
  }),
});

if (!res.ok) throw new Error(await res.text());
await writeFile("out.mp3", Buffer.from(await res.arrayBuffer()));

Test lucia on a real lesson script — free API key with 25k characters at /dashboard.

FAQ

Catalog: /voices. Comparisons and pricing models: /compare and /calc.