ElevenLabs Spanish TTS API

Overview

The ElevenLabs Spanish TTS API is a one-node serverless workflow that converts Spanish text into high-quality, natural-sounding speech audio. Powered by ElevenLabs' latest eleven_v3 model with the language code locked to es, this workflow is purpose-built for Spanish-language voice generation targeting both Latin American and Spain markets.

Whether you are building a voice assistant, IVR system, podcast generator, or customer support automation, this API delivers studio-grade Spanish speech output as an MP3-compatible audio stream via a single API call.

Spanish is the second most spoken language in the world, with over 500 million native speakers and a massive and fast-growing developer ecosystem across LATAM and Europe. This workflow makes it trivial to plug ElevenLabs' best-in-class voice AI directly into your Spanish-language product.

How It Works

The workflow contains a single node:

ElevenLabs Text To Speech (eleven_v3) receives the Spanish text input and synthesizes it into speech. The language_code parameter is hardcoded to es, ensuring the model always renders the output in Spanish regardless of input variations. The model used is eleven_v3, ElevenLabs' highest quality generation model with improved prosody, naturalness, and emotional expressiveness. The generated audio is passed to an Audio Output node and returned as the API response.

The API accepts one input parameter, text (a string of Spanish text), and returns one output, audio (the synthesized audio file).

Customization Guide

While the language is locked to Spanish (es), several parameters can be adjusted to tailor the output:

• •Voice: Change the Rachel default voice to any ElevenLabs voice that suits your brand or character. You can also supply a custom voice_id for cloned or custom voices.
• •Stability: Controls how consistent the voice sounds across sentences (default 0.5). Increase for more predictable narration, decrease for more expressive variation.
• •Similarity Boost: How closely the output matches the reference voice (default 0.75).
• •Speed: Control speech rate between 0.25x and 4x (default 1.0). Useful for IVR systems or accessibility use cases.
• •Style: Add expressiveness and emotional inflection (default 0, max 1).

Who It Is For

This workflow is ideal for:

• •LATAM and Spanish-market SaaS apps adding voice output to their product
• •Telecom and IVR providers that need reliable Spanish TTS for automated call flows
• •Podcast and media platforms generating Spanish audio content at scale
• •EdTech and e-learning platforms delivering Spanish-language lessons with lifelike narration
• •Customer support teams automating voice responses in Spanish

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