elevenlabs-performance-tuning

name	elevenlabs-performance-tuning
description	Optimize ElevenLabs TTS latency with model selection, streaming, caching, and audio format tuning. Use when experiencing slow TTS responses, implementing real-time voice features, or optimizing audio generation throughput. Trigger with "elevenlabs performance", "optimize elevenlabs", "elevenlabs latency", "elevenlabs slow", "fast TTS", "reduce elevenlabs latency", or "TTS streaming".
allowed-tools	Read, Write, Edit
version	1.6.0
license	MIT
author	Jeremy Longshore <[e-mail]>
tags	["saas","voice","ai","elevenlabs","performance","optimization"]
compatibility	Designed for Claude Code

ElevenLabs Performance Tuning

Overview

Optimize ElevenLabs TTS latency and throughput through model selection, streaming strategies, audio format tuning, and caching. Latency ranges from ~75ms (Flash) to ~500ms (v3) depending on configuration.

The two highest-leverage, lowest-effort levers — model choice (Step 1) and output format (Step 2) — are documented inline below. The four deeper integrations (HTTP streaming, WebSocket streaming, caching, parallel generation) are summarized here with copy-ready code in the full implementation walkthrough.

Prerequisites

• ElevenLabs SDK installed (@elevenlabs/elevenlabs-js)
• An ElevenLabs API key exported as ELEVENLABS_API_KEY (used by the SDK and passed as xi_api_key on the WebSocket handshake)
• Understanding of your latency requirements
• Audio playback infrastructure (browser, mobile, server-side)

Instructions

Step 1: Model Selection for Latency

The single biggest performance lever is model choice:

Model	Avg Latency	Quality	Languages	Use Case
eleven_flash_v2_5	~75ms	Good	32	Real-time chat, IVR, gaming
eleven_turbo_v2_5	~150ms	Good	32	Balanced speed/quality
eleven_multilingual_v2	~300ms	High	29	Narration, content creation
eleven_v3	~500ms	Highest	70+	Maximum expressiveness

// Select model based on use case
function selectModel(useCase: "realtime" | "balanced" | "quality" | "max_quality"): string {
   models = {
    :    ,
    :    ,
    :     ,
    : ,
  };
   models[useCase];
}