Oryginalny dokument Skill
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ElevenLabs Text-to-Speech
Generate natural speech from text - supports 70+ languages, multiple models for quality vs latency tradeoffs.
Setup: See Installation Guide. For JavaScript, use @elevenlabs/* packages only.Quick Start
Python
python
from elevenlabs import ElevenLabs
client = ElevenLabs()
audio = client.text_to_speech.convert(
text="Hello, welcome to ElevenLabs!",
voice_id="JBFqnCBsd6RMkjVDRZzb", # George
model_id="eleven_multilingual_v2"
)
with open("output.mp3", "wb") as f:
for chunk in audio:
f.write(chunk)JavaScript
javascript
import { ElevenLabsClient } from "@elevenlabs/elevenlabs-js";
import { createWriteStream } from "fs";
import { Readable } from "stream";
const client = new ElevenLabsClient();
const audio = await client.textToSpeech.convert("JBFqnCBsd6RMkjVDRZzb", {
text: "Hello, welcome to ElevenLabs!",
modelId: "eleven_multilingual_v2",
});
// convert() returns a web ReadableStream — bridge it to a Node stream to write to disk
Readable.fromWeb(audio).pipe(createWriteStream("output.mp3"));CLI
bash
elevenlabs text-to-speech convert --voice-id JBFqnCBsd6RMkjVDRZzb \
--text "Hello!" --model-id eleven_multilingual_v2 --output output.mp3The CLI reads ELEVENLABS_API_KEY from the environment automatically.
Models
| Model ID | Languages | Latency | Best For |
|---|---|---|---|
eleven_v3 | 70+ | Standard | Highest quality, emotional range |
eleven_multilingual_v2 | 29 | Standard | High quality, long-form content |
eleven_flash_v2_5 | 32 | ~75ms | Ultra-low latency, real-time |
eleven_flash_v2 | English | ~75ms | English-only, fastest |
eleven_turbo_v2_5 | 32 | ~250-300ms | Balanced quality/speed |
eleven_turbo_v2 | English | ~250-300ms | English-only, balanced |
Voice IDs
Use pre-made voices or create custom voices in the dashboard.
Popular voices:
JBFqnCBsd6RMkjVDRZzb- George (male, narrative)EXAVITQu4vr4xnSDxMaL- Sarah (female, soft)onwK4e9ZLuTAKqWW03F9- Daniel (male, authoritative)XB0fDUnXU5powFXDhCwa- Charlotte (female, conversational)
python
voices = client.voices.get_all()
for voice in voices.voices:
print(f"{voice.voice_id}: {voice.name}")Voice Settings
Fine-tune how the voice sounds:
- Stability: How consistent the voice stays. Lower values = more emotional range and variation, but can sound unstable. Higher = steady, predictable delivery.
- Similarity boost: How closely to match the original voice sample. Higher values sound more like the original but may amplify audio artifacts.
- Style: Exaggerates the voice's unique style characteristics (only works with v2+ models).
- Speaker boost: Post-processing that enhances clarity and voice similarity.
python
from elevenlabs import VoiceSettings
audio = client.text_to_speech.convert(
text="Customize my voice settings.",
voice_id="JBFqnCBsd6RMkjVDRZzb",
voice_settings=VoiceSettings(
stability=0.5,
similarity_boost=0.75,
style=0.5,
speed=1.0, # 0.25 to 4.0 (default 1.0)
use_speaker_boost=True
)
)Language Selection
Use language_code with models that support language enforcement to guide pronunciation and text normalization. Unsupported language codes are ignored, and language_code is not supported on eleven_multilingual_v2.
python
audio = client.text_to_speech.convert(
text="Bonjour, comment allez-vous?",
voice_id="JBFqnCBsd6RMkjVDRZzb",
model_id="eleven_v3",
language_code="fr" # ISO 639-1 code
)Text Normalization
Controls how numbers, dates, and abbreviations are converted to spoken words. For example, "01/15/2026" becomes "January fifteenth, twenty twenty-six":
"auto"(default): Model decides based on context"on": Always normalize (use when you want natural speech)"off": Speak literally (use when you want "zero one slash one five...")
python
audio = client.text_to_speech.convert(
text="Call 1-800-555-0123 on 01/15/2026",
voice_id="JBFqnCBsd6RMkjVDRZzb",
apply_text_normalization="on"
)Request Stitching
When generating long audio in multiple requests, the audio can have pops, unnatural pauses, or tone shifts at the boundaries. Request stitching solves this by letting each request know what comes before/after it:
python
# First request
audio1 = client.text_to_speech.convert(
text="This is the first part.",
voice_id="JBFqnCBsd6RMkjVDRZzb",
next_text="And this continues the story."
)
# Second request using previous context
audio2 = client.text_to_speech.convert(
text="And this continues the story.",
voice_id="JBFqnCBsd6RMkjVDRZzb",
previous_text="This is the first part."
)Output Formats
| Format | Description |
|---|---|
mp3_44100_128 | MP3 44.1kHz 128kbps (default) - compressed, good for web/apps |
mp3_44100_192 | MP3 44.1kHz 192kbps (Creator+) - higher quality compressed |
mp3_44100_64 | MP3 44.1kHz 64kbps - lower quality, smaller files |
mp3_22050_32 | MP3 22.05kHz 32kbps - smallest MP3 files |
pcm_16000 | Raw PCM 16kHz - use for real-time processing |
pcm_22050 | Raw PCM 22.05kHz |
pcm_24000 | Raw PCM 24kHz - good balance for streaming |
pcm_44100 | Raw PCM 44.1kHz (Pro+) - CD quality |
pcm_48000 | Raw PCM 48kHz (Pro+) - highest quality |
ulaw_8000 | μ-law 8kHz - standard for phone systems (Twilio, telephony) |
alaw_8000 | A-law 8kHz - telephony (alternative to μ-law) |
opus_48000_64 | Opus 48kHz 64kbps - efficient streaming codec |
wav_44100 | WAV 44.1kHz - uncompressed with headers |
Streaming
For real-time applications, use the stream method (returns audio chunks as they're generated):
python
audio_stream = client.text_to_speech.stream(
text="This text will be streamed as audio.",
voice_id="JBFqnCBsd6RMkjVDRZzb",
model_id="eleven_flash_v2_5" # Ultra-low latency
)
for chunk in audio_stream:
play_audio(chunk)See references/streaming.md for WebSocket streaming.
Error Handling
python
try:
audio = client.text_to_speech.convert(
text="Generate speech",
voice_id="invalid-voice-id"
)
except Exception as e:
print(f"API error: {e}")Common errors:
- 401: Invalid API key
- 422: Invalid parameters (check voiceid, modelid)
- 429: Rate limit exceeded
Tracking Costs
Monitor character usage via response headers (x-character-count, request-id):
python
response = client.text_to_speech.convert.with_raw_response(
text="Hello!", voice_id="JBFqnCBsd6RMkjVDRZzb", model_id="eleven_multilingual_v2"
)
audio = response.parse()
print(f"Characters used: {response.headers.get('x-character-count')}")