How to Build AI Voice Agents With ElevenLabs (2026)

You can build an AI voice agent that sounds human, knows your business and answers calls 24/7 in 70+ languages with ElevenAgents from ElevenLabs, and the whole setup takes six steps rather than a development team.

This guide walks through exactly how to build one from scratch, from the first template to going live on web, app and phone.

We publish AI systems like this for 300,000+ senior professionals at AI Central, and more of them live in the AI Central Library.

Missed calls. Unanswered questions. Support tickets piling up overnight.

Every hour your team is offline is an hour your competitors are winning, and hiring a night shift or an offshore desk to cover it is slow, expensive and hard to keep consistent.

ElevenAgents closes that gap. You give it your knowledge base, pick a voice, connect the tools you already use, and it handles the conversation in real time - reassuring, de-escalating or escalating exactly as you set it up to.

Go to ElevenLabs and create a free account, then open Agents.

Click "Create Agent" and choose Voice Agent or Chat Agent. Pick the template closest to your use case - support, sales, booking - so you start from a working baseline instead of a blank config.

Upload your FAQs, SOPs, product docs, pricing and policies. The more you give it, the smarter it gets.

Do not try to document everything on day one. Start with your top 20 customer questions and the answers you want given every time. That is enough to handle most of the volume, and you can add depth once you see what people actually ask.

This is also what makes the agent sound like your brand rather than a generic bot - it is answering from your material, not the open internet.

Pick a voice that matches your brand - warm, professional, energetic - then select your languages. One agent can speak 70+ languages at human quality with no extra setup.

Then set your tone with Expressive Mode. It gives the agent real emotional control: reassure a frustrated caller, de-escalate a complaint, get excited about a new feature. Write your tone guidelines here so every conversation follows them.

Link the systems your team already runs on:

Each integration takes under two minutes. Once connected, the agent can look up a customer, log a ticket or book a slot mid-conversation instead of promising a callback.

Use the built-in simulation tool and ask your 10 hardest questions - the edge cases, the angry ones, the ones your best support rep would pause on.

Test every escalation trigger too. You want to know exactly when the agent hands off to a human before a real customer finds out for you.

Go live across every channel from the same agent. Embed the chat widget on your site with one line of code, add it to your app via the API, and route your phone line through it.

One agent, every touchpoint, one knowledge base to maintain.

Before: calls go to voicemail after 6pm, tickets wait until morning, and every new language means a new hire.

After: one agent answers in real time, in the caller's language, from your own documentation, and hands off to your team only when it should. Support scales without headcount, and sales stops leaking overnight.

Do not wait for the perfect knowledge base. Open ElevenAgents, load your top 20 questions, and run the simulation.

If you are new to setting up AI tools, our setup guide for ChatGPT, Claude and Copilot covers the fundamentals, and these 10 free AI cheat sheets are a useful quick reference. More systems like this one live in the AI Central Library.

ElevenAgents is the ElevenLabs product for building real-time AI voice and chat agents. You create an agent from a template, give it a knowledge base, choose a voice and language, connect your tools, and deploy it to web, app and phone.

One agent can speak 70+ languages at human quality with no extra setup. You select the languages when you choose the voice.

The guide covers CRMs (Salesforce, HubSpot, Zoho), support desks (Zendesk, Intercom), calendars (Google, Outlook) and phone systems (Twilio, WebRTC). Each integration takes under two minutes.

Use the built-in simulation tool. Ask it your 10 hardest customer questions and trigger every escalation path so you know exactly when it hands off to a human.