Install the belt CLI skill:
npx skills add belt-sh/cli
ElevenLabs Text-to-Speech
Premium text-to-speech with 22+ voices via inference.sh CLI.
Quick Start
Requires inference.sh CLI (
belt). Install instructions
bashbelt 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
bashbelt app run elevenlabs/tts --input '{"text": "Welcome to our quarterly earnings presentation.", "voice": "george"}'
Choose a Model
bash# 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
bashbelt 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
bash# 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.
bash# 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
bash# 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
bash# 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, Inworld TTS, and more) npx skills add inference-sh/skills@text-to-speech # Full platform skill (all apps) npx skills add inference-sh/skills@infsh-cli
Browse all audio apps: belt app list --category audio
