ElevenLabs Voice Changer

Transform the voice in an audio recording into a different target voice. Voice Changer (previously called Speech-to-Speech — the API endpoint and SDK methods still use the speech_to_speech / speechToSpeech name) keeps the original performance — emotion, pacing, intonation, breaths, whispers, laughs, cries — and only swaps who is speaking.

Setup: See Installation Guide. For JavaScript, use @elevenlabs/* packages only.

Key Facts

• Maximum input length: 5 minutes per request — split longer recordings into chunks and stitch the outputs.
• Maximum file size: 50 MB per request — compress to MP3 if your source is larger.
• Pricing: 1,000 characters per minute of audio processed (duration-based, not text-based).
• Recommended model: eleven_multilingual_sts_v2 — often outperforms eleven_english_sts_v2 even for English-only content.

Quick Start

Python

from elevenlabs import ElevenLabs