---
title: "Voice Agents"
description: "An AI agent that holds a real-time voice or video conversation, answers from your knowledge base, and asks the questions you configure it to ask."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.speakai.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Voice Agents

A voice agent is an AI you build once and it then holds a live, spoken conversation with each
person who reaches it, instead of typing replies one at a time in a chat window. It answers from
your knowledge base, works through the questions you've configured for it, and can take a call
over the phone or run right on your website.


## What it can be

Every agent runs in one of two modes. **Voice only** gives callers audio with a dynamic voice
visualization; **Video avatar** puts a lifelike talking face on the call instead. Either way, the
agent speaks and listens in real time and can hold up its end of a natural back-and-forth, not a
scripted menu.

## The pieces you configure

Every agent is built from the same four pieces, no matter which mode it runs in:

- **[Voice & avatar](/help/voice-agents/voice-and-avatar/)**: which mode it runs in, the voice it
  speaks with, and, for a video agent, the face it shows.
- **[Instructions & behavior](/help/voice-agents/instructions-and-behavior/)**: the personality and
  instructions that shape how it responds, and how quickly it replies.
- **[Questions](/help/voice-agents/questions/)**: what it should ask during the conversation, and
  which field on your account each answer gets saved to.
- **[Knowledge base](/help/voice-agents/knowledge-base/)**: the collections it can draw on so it
  answers from your documents instead of guessing.

## Build one, then put it to work

Once an agent exists, the rest of this section covers everything you do around it:
[create it](/help/voice-agents/create/) from a blank agent or a template, run it through
[testing](/help/voice-agents/testing/) with scripted scenarios before real people talk to it,
[share or embed](/help/voice-agents/share-and-embed/) it so people can actually reach it, then read
its [conversations](/help/voice-agents/conversations/) and
[analytics](/help/voice-agents/analytics/) to see how it's doing and where it needs work.

---
Related: [Create an agent](/help/voice-agents/create/) ·
[Voice & avatar](/help/voice-agents/voice-and-avatar/) ·
[Instructions & behavior](/help/voice-agents/instructions-and-behavior/) ·
[Questions](/help/voice-agents/questions/) ·
[Knowledge base](/help/voice-agents/knowledge-base/) ·
[Testing](/help/voice-agents/testing/) ·
[Share & embed](/help/voice-agents/share-and-embed/) ·
[Conversations](/help/voice-agents/conversations/) ·
[Analytics](/help/voice-agents/analytics/) ·
[Voice agent API reference](/api/voice-agents/agents/)

Source: https://docs.speakai.co/help/voice-agents/index.mdx