Eleven v4 Turbo

Speech

eleven-v4-turbo

ElevenLabs|Created Oct 30, 2026

Speech

Eleven v4 Turbo is our state of the art model for real-time speech synthesis, delivering high quality audio, expressiveness, and control over how voices are performed. Eleven v4 Turbo supports high-fidelity voice cloning and has a median latency of ~100ms.

Overview Specifications Activity Performance Uptime Examples API Reference

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Pricing-50%

Pay-as-you-go rates for this model. More details in the billing guide.

Speech (1k)

$0.02

Capabilities

Input Modalities

Text

Output Modalities

Audio

Supported Parameters

Available parameters for API requests

Response Format

Usage Analytics

Token usage of this model on our platform

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Throughput

Not enough throughput data

Time-To-First-Token (TTFT)

Not enough TTFT data

Code Example

Example code for using this model through our API with Python (OpenAI SDK) or cURL. Replace placeholders with your API key and model ID.

Basic request example. Ensure API key permissions. For more details, see our documentation.

from openai import OpenAI
from pathlib import Path

client = OpenAI(base_url="https://api.naga.ac/v1", api_key="YOUR_API_KEY")

speech_file_path = Path("speech.mp3")
resp = client.audio.speech.create(
    model="eleven-v4-turbo",
    voice="alloy",
    input="Hello from NagaAI Text-to-Speech!"
)
resp.stream_to_file(speech_file_path)