ElevenLabs Text-to-Speech

Premium text-to-speech with 22+ voices via inference.sh CLI.

Quick Start

Requires inference.sh CLI (belt). Install instructions

belt login

# Generate speech with ElevenLabs
belt app run elevenlabs/tts --input '{"text": "Hello, welcome to our product demo.", "voice": "aria"}'

Available Models

Model	ID	Best For	Latency
Multilingual v2	eleven_multilingual_v2	Highest quality, 32 languages	~250ms
Turbo v2.5	eleven_turbo_v2_5	Balance of speed & quality	~150ms
Flash v2.5	eleven_flash_v2_5	Ultra-low latency	~75ms

Voice Library

Female Voices

Voice	Style
aria	American, conversational
alice	British, confident
bella	American, warm
jessica	American, expressive
laura	American, professional
lily	British, soft
sarah	American, friendly

Male Voices

Voice	Style
george	British, authoritative
adam	American, deep
bill	American, mature
brian	American, conversational
callum	Transatlantic, intense
charlie	Australian, natural
chris	American, casual
daniel	British, commanding
eric	American, friendly
harry	American, young
liam	American, articulate
matilda	American, warm
river	American, confident
roger	American, authoritative
will	American, bright

Examples

Basic Speech

belt app run elevenlabs/tts --input '{"text": "Welcome to our quarterly earnings presentation.", "voice": "george"}'

Choose a Model

# Highest quality
belt app run elevenlabs/tts --input '{
  "text": "This is our premium multilingual model with the best quality.",
  "voice": "aria",
  "model": "eleven_multilingual_v2"
}'

# Ultra-fast for real-time applications
belt app run elevenlabs/tts --input '{
  "text": "Flash model for low-latency applications.",
  "voice": "brian",
  "model": "eleven_flash_v2_5"
}'

Voice Tuning

belt app run elevenlabs/tts --input '{
  "text": "Fine-tune the voice characteristics for your use case.",
  "voice": "bella",
  "stability": 0.3,
  "similarity_boost": 0.9,
  "style": 0.4
}'

Parameter	Range	Effect
stability	0-1	Higher = more consistent, lower = more expressive
similarity_boost	0-1	Higher = closer to original voice character
style	0-1	Higher = more style exaggeration
use_speaker_boost	true/false	Enhances speaker clarity

Output Formats

# High-quality MP3
belt app run elevenlabs/tts --input '{
  "text": "High quality audio output.",
  "voice": "daniel",
  "output_format": "mp3_44100_192"
}'

Format	Description
mp3_44100_128	MP3 at 44.1kHz, 128kbps (default)
mp3_44100_192	MP3 at 44.1kHz, 192kbps
pcm_16000	Raw PCM at 16kHz
pcm_22050	Raw PCM at 22.05kHz
pcm_24000	Raw PCM at 24kHz
pcm_44100	Raw PCM at 44.1kHz

Multilingual

ElevenLabs supports 32 languages including English, Spanish, French, German, Italian, Portuguese, Chinese, Japanese, Korean, Arabic, Hindi, Russian, and more.

# Spanish
belt app run elevenlabs/tts --input '{
  "text": "Hola, bienvenidos a nuestra presentación.",
  "voice": "aria",
  "model": "eleven_multilingual_v2"
}'

# French
belt app run elevenlabs/tts --input '{
  "text": "Bonjour, bienvenue à notre démonstration.",
  "voice": "alice",
  "model": "eleven_multilingual_v2"
}'

Voice + Video Workflow

# 1. Generate voiceover
belt app run elevenlabs/tts --input '{
  "text": "Introducing the future of AI-powered content creation.",
  "voice": "george"
}' > voiceover.json

# 2. Create talking head video
belt app run bytedance/omnihuman-1-5 --input '{
  "image_url": "https://portrait.jpg",
  "audio_url": "<audio-url-from-step-1>"
}'

Use Cases

• Voiceovers: Product demos, explainer videos, commercials
• Audiobooks: Long-form narration with consistent voices
• Podcasts: AI hosts with natural delivery
• E-learning: Course narration in multiple languages
• Accessibility: High-quality screen reader content
• IVR: Professional phone system messages
• Video Narration: Documentary and social media content

Related Skills

# ElevenLabs multi-speaker dialogue
npx skills add inference-sh/skills@elevenlabs-dialogue

# ElevenLabs voice changer
npx skills add inference-sh/skills@elevenlabs-voice-changer

# ElevenLabs sound effects
npx skills add inference-sh/skills@elevenlabs-sound-effects

# All TTS models (Kokoro, DIA, Chatterbox, and more)
npx skills add inference-sh/skills@text-to-speech

# Full platform skill (all 250+ apps)
npx skills add inference-sh/skills@infsh-cli

Browse all audio apps: belt app list --category audio