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  • What is an AI Voice Assistant? 
  • How Does an AI Voice Assistant Work? 
  • Benefits of AI Voice Assistant for Individuals & Companies 
  • 5 Best AI Based Voice Assistant Tools 
  • FAQs About AI Voice Assistant 

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[Full Guide] AI Voice Assistant Tool: Definition, Benefits, How to Use in 2023

Beling Luara

Updated on

What is the best AI voice assistant and what benefits can you enjoy? Just find the 5 best options in 2023 and the step-by-step guide in this blog.

Voice assistants are nothing new today, from Siri to Alexa to Google Assistant, new technologies have been building superhuman agents to improve efficiency and productivity. Harnessing the power of artificial intelligence, today an AI voice assistant is the most innovative tool that has the potential to transform people’s lives.

Best 5 AI Voice Assistant Tools

Looking for an AI based voice assistant to boost efficiency but don’t know which one is safe and free? This blog introduces the basics of AI voice assistants and the 5 best AI voice assistant tools to get voice assistance quickly and easily. Just keep reading to learn more.

On This Page
  • What is an AI Voice Assistant? 
  • How Does an AI Voice Assistant Work? 
  • Benefits of AI Voice Assistant for Individuals & Companies 
  • 5 Best AI Based Voice Assistant Tools 
  • FAQs About AI Voice Assistant 

What is an AI Voice Assistant? 

An AI voice assistant is also known as a virtual assistant, which mainly adopts voice recognition technology and natural language processing algorithms to complete tasks. It can understand and respond to users’ voice commands, provide information, perform tasks, and help users process various activities without manual input. Yes, all you have to do is talk.

Today you can find such AI-based voice assistant tools on a handful of devices such as computers, smartphones, smart speakers, etc. The most well-known AI voice assistant tools today are Apple’s Siri, Google AI voice assistant, Amazon’s Alexa, Microsoft’s Cortana, etc.

How Does an AI Voice Assistant Work? 

An AI voice assistant is common to see in daily life, which relies on several key technologies to function. Here’s how an AI based voice assistant works.

Speech Recognition: The primary function that an AI voice assistant can perform is to capture a user’s voice commands and convert them to text with automatic speech recognition (ASR) technology.

Knowledge Retrieval: It can also access a huge knowledge database to retrieve relevant information to respond to your query or perform requested tasks.

How an AI Voice Assistant Works

Natural Language Processing (NLP): With NLP algorithms, an AI voice assistant can analyze the sentence structure, grammar, context, etc., and understand the intent of the command.

Machine Learning: AI voice assistants also adopt machine learning to continuously learn and adapt to a user's voice, preferences, and commands, which makes the interaction more efficient.

Benefits of AI Voice Assistant for Individuals & Companies 

For those who Google “what is AI voice assistant,” the previous parts should have your question answered. In this part, you can learn about the major benefits of AI voice assistants for individuals, businesses, and marketers.

  • Smart Text to Speech Assistant: The text-to-speech AI algorithms can create voiceovers, which can be applied in a suite of AI-powered customer support tools, such as call centers, text-based chatbots, and more.
  • Natural and Human-like AI Voices: An AI voice assistant can understand your intent and generate natural and realistic AI voices for conversation. This makes it easier and more comfortable to interact with the technology.
  • Personalized Assistance: With machine learning algorithms, AI voice assistants can learn from past interactions and provide personalized assistance based on your preference.
  • Cost-effective and Productive: Whether you use an AI voice assistant for individual or business purposes, it can cut down operational costs while boosting efficiency and productivity.
  • Accessibility and Inclusivity: An AI voice assistant is a reliable alternative method to help users who have disabilities or difficulties use digital devices more easily.

5 Best AI Based Voice Assistant Tools 

AI based voice assistants can be quite handy for individuals and businesses who want to improve workflows and efficiency. So which AI voice assistant is the best? How to make an AI voice assistant work? Just read on to find the 5 best AI-based voice assistant tools.

1. Vidnoz AI

Want to get personalized AI voices for free? Vidnoz AI is the best AI voice assistant tool you can try. Developed with the latest AI algorithms, the web-based service can help you create engaging videos with realistic AI avatars speaking natural-sounding voices effortlessly.

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Why Pick Vidnoz AI as the Best AI Voice Assistant?

  • Free to Get AI Voice Assistant: How to use voice assistant for free? Vidnoz AI is the No.1 choice. There is no need to install anything, just sign up with an email address and you can enjoy a virtual voice assistant with AI on the web.
  • Text-to-Speech with Natural AI Voices: With sophisticated text to speech AI algorithms, Vidnoz AI can transform scripts into 23+ languages with 100+ lip-sync AI voices for vivid video presentations.
  • Personalized Voice Assistant: As the smartest AI voice assistant, Vidnoz AI lets you choose from a handful of AI voiceovers. You can adjust speed and tone as you see fit.
  • AI Talking Avatars for AI Voice Videos: With 100+ human-like male/female AI avatars in various countries and styles, Vidnoz AI allows you to make engaging videos and generate AI talking head free.
  • Easily Create AI Voice Videos with 200+ Templates: No video editing skill is required. You can easily make AI voice videos with 200+ stylish templates hassle free on Vidnoz AI.

How to Use AI Voice Assistant in a Video

Step 1. Head to Vidnoz AI. Sign up with an email address (Gmail, Microsoft, LinkedIn).

Step 2. Go to the Template menu and choose a preferred template, or choose an avatar or upload an avatar to get started. You can do a face swap by replacing the avatar.

AI Voice Assistant Vidnoz AI Choose Templates

Step 3. Input the text you want to convert to AI voices. Choose your preferred language, speed, etc. Click on the Generate button to generate a video.

AI Voice Assistant Vidnoz AI Generate Voices

Want to swap the face of your avatar before uploading? Just try Vidnoz AI free AI headshot generator for free!

Vidnoz AI - Create Free Engaging AI Video with Talking Avatar

  • Easily create professional AI videos with realistic avatars.
  • Text-to-speech lip sync voices of different languages.
  • 700+ video templates for multiple scenarios.

2. Google Assistant

Google Assistant is the best AI voice assistant for Android and many devices. The smart Google AI voice assistant can engage in two-way conversations and it is ready to help whenever you need it.

AI Voice Assistant Google Assistant

Main features:

  • It works on computers, tablets, smart speakers, automobiles, and more.
  • Understand voice commands and perform tasks perfectly.
  • Compatible with many mobile apps such as Spotify, Discord, etc.

3. Fireflies

Fireflies is an AI voice assistant that brings chatGPT to meetings. You can use it as an AI notetaker to transcribe, summarize, and analyze conversations across several video-conferencing apps, dialers, and audio files.

AI Voice Assistant Fireflies

Main Features:

  • Automatically record and transcribe meetings like Zoom, Google Meet, etc.
  • Analyze and review meetings using conversation intelligence.
  • Collaborative AI-powered tool for better teamwork.

4. Siri

Siri is the most private AI voice assistant for Apple devices. It can understand a wide range of voice commands and you can interact with Siri more easily as the voice assistant adapts to your preferences. 

AI Voice Assistant Siri

Main features:

  • Check basic information and make text actions.
  • Search the internet and find the basic facts, such as “How to generate Obama AI voice?”
  • Handle device settings and engage with iOS-integrated apps.

5.  Alexa

By letting you voice control the world, Alexa can make your life much easier. Adopting natural language processing, the AI voice assistant can perform a good variety of tasks on many smart devices.

AI Voice Assistant Alexa

Main features:

  • Support tasks like voice interaction, music playback, streaming podcasts, etc.
  • Control several smart devices as a home automation system.
  • Excellent privacy features to ensure a better Alexa experience.

Overview of 5 Best AI Voice Assistant Tools 

For those who are looking for a helpful AI voice assistant and search “how to use voice assistant?” Now you’ve got all the answers. Here you can also have an overview of the 5 options to learn more.

AI Voice Assistant


Free Option



Vidnoz AI



Free; Starter: $14.99/mo; Business: $37.49/mo


Google Assistant

Compatible with various devices





Web-based; Chrome extension


Free; Pro: $10/per seat; Business: $19/per seat



Compatible with various devices





Compatible with various devices




FAQs About AI Voice Assistant 

Q: What are AI voice assistants?

A: AI voice assistants are AI-powered virtual assistants that can help you perform multiple tasks such as device control, music playback, searching the internet, etc. And all you have to do is use voice commands to make them work.

Q: Is there an AI personal assistant?

A: Yes. Most AI voice assistants including those introduced above can be your AI personal assistant. They can help you with the most private tasks on a wide range of smart devices.

Q: What is the most realistic AI voiceover?

A: Vidnoz AI provides the most realistic AI voiceover developed by the latest algorithms. There are also plenty of solid choices, for instance, Speechify, Murf AI, etc., and some of them even offer AI voice cloning free.

Final Words

What is an AI voice assistant and what are the best options out there? This blog is the ultimate guide. But when it comes to the most powerful AI voice assistant tool for video creation, Vidnoz AI is your go-to choice. Just follow the simple steps and you can easily get realistic AI voices fast and free. It’s the most professional AI video generator for any use case. Just sign up and try it for free now!

Create Text-to-Speech AI Voices - FREE

Make natural voice text to speech in various languages, accents, and ethnicities. Try it free now!


Beling Luara

As a professional SEO writer, Beling Luara is committed to creating high-quality and highly optimized content that not only engages readers but is also informative, insightful, and practical. Her writing style is based on thorough research, creative thinking, and a keen eye for detail.