Eleven v4 and Eleven v4 Turbo Text to Speech models

ElevenLabs

5 min read Original article ↗

Introducing Eleven v4Meet Eleven v4, our most emotive model yet.

Eleven v4

Our most emotive voice model

Eleven v4 is built on an entirely new architecture that reads a script the way a voice actor would. It knows who's speaking, what just happened, and how every line should land.

Built on a new architecture

Write direction into the script

Add direction like [laughs], [whispers], and [door slams] straight into the script. Eleven v4 follows tag sequences more reliably than v3, sound effects included.

Stitch long-form audio without the seams

Context stitching keeps pacing and delivery steady across a script of any length. A full audiobook sounds like a single take from the first page to the last.

Regenerate without vocal drift

Redo a line once or fifty times and it’s still the same person speaking. Speaker stability holds across dialogue, narration, and everything in between.

Cast a Professional Voice Clone

Professional Voice Clones weren’t supported in v3. In Eleven v4, they’re back and perform with the model’s full emotional range across every language they speak.

Eleven v4 Turbo

Introducing Eleven v4 Turbofor realtime and agents

Our fastest real-time speech model with the expressive range of Eleven v4, available through the API and ElevenAgents. Eleven v4 Turbo has a median inference latency of ~100 ms, time to first speech of ~150 ms, and stays consistent in long interactions.

Optimized for live conversation

Stream in, stream out

Push text as your LLM generates it and audio starts coming back before the sentence is finished. Bidirectional streaming, built for agent loops.

Expression at conversational speed

Turbo carries the full expressive range of Eleven v4. Confirmations, escalations, and holds land differently from one another instead of reading identically.

One voice across every turn

Professional Voice Clones work identically across both models, so a single brand voice stays consistent from the first turn of a call to the last.

Speak the language like a local

Point it at Japanese, Spanish or Portuguese text and the voice speaks it fluently, with a native accent.

Narration voices A place for the storytellers. Warm, authoritative, and consistent across every project.

Conversational voices For everyday conversations, you need a natural, easygoing voice. Our conversational voices are built for dialogue and podcasts that are made to feel unscripted.

Social media voices Voices that come alive in short-form content. Capture the energy and personality needed to make a user stay on your TikTok or Reel from end to end.

Character voices A pool of voices for your fictional world. Select from a dynamic cast that brings your game, audiobook, or animation to life.

Educational voices Trustworthy, patient voices that guide students through complex topics. These voices excel for courses, tutorials, training simulations, and guides at every level.

Advertisement voices Polished voices brimming with confidence to land your next product sale. Perfect for digital ads or TV and radio reads.

Entertainment voices From booming movie trailers to comic voices made for performance, these voices scream personality. Built for content where delivery matters as much as material.

Multilingual voices Voices built for global content. Natural pacing, idiomatic expressions, and accents that connect with audiences in every market.

We've scaled Agentforce Voice adoption through deterministic control, and what we hear consistently from customers is that they trust it because every action an agent takes is grounded and governed instead of improvised. A key part of this strategy is balancing that determinism with high-quality, high-EQ voice models. That's exactly where we're seeing Eleven v4 Turbo raise the bar, with faster, more natural responses that meet the standard our customers expect - allowing them to bring Agentforce Voice to even more use cases.

Ryan Peterson, SVP Product for Agentforce Voice, Salesforce

Working with hundreds of publishers to bring their journalism to audio, we see firsthand how much voice quality matters. Since partnering with ElevenLabs, many of our publishers have seen higher engagement and longer listening times. Eleven v4 gives publishers more ways to make sure those voices feel engaging, familiar, and distinctly their own.

Patrick O'Flaherty, Co-Founder of BeyondWords

ElevenLabs v4 brings a new level of natural sound to voice conversations. Voices are not only more expressive, but more controllable, giving us the ability to create richer, more immersive voice experiences.

Chrys Bader, Co-founder and CEO of Rosebud

First time I used it (Eleven v4), it was so clean and lifelike, it felt like I was running a session with talent in the booth.

Kyle Gudmundson, Music & Audio Lead, Accenture Accelerate

We've been looking for a voice model that's fast enough to feel like a real conversation without trading away quality, and Eleven v4 Turbo is the first one that does both. For automated sales workflows, this is the point where building stops feeling like an experiment.

Oscar Daniels, Head of Credit Building Products, Spring Financial

Choose how it soundsbefore it says a word

Every generation starts with a voice. Clone one you already have, design one from a description, or correct how specific words are said with IPA support.

Voice Cloning

Clone a voice from ten seconds of audio, or train a Professional Voice Clone for a near-perfect match.

Voice Design

Describe a voice in a sentence and generate it, without a recording session or a casting call.

Pronunciation Dictionary

Define how names, acronyms and technical terms are pronounced. Set phonetics once, and every generation uses them.

Start creating for freeUpgrade when you need more

Available via APIBring Eleven v4 to your app

Build with Eleven v4 Turbo for real-time experiences and voice agents, all through ElevenAPI.

Frequently asked questions

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