AI voice generator and text-to-speech tool

Generate natural-sounding voiceovers for videos using Synthesia's AI voice generator. No need for microphones, voice actors, or audio recordings. Select the AI voice you'd like to use, type in your text, and click Play to hear the result.

alex's voice
US English - Soft spoken, casual
Type in your text and click Play to transform it into speech.


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What's the difference between an AI voice generator and traditional text-to-speech?

Text-to-speech software

Text-to-speech AI tools take written text and convert it into speech using a computer-generated voice. These synthetic voices can sometimes sound robotic or monotonous. TTS is commonly used for navigation systems, screen readers, and automated phone systems. A text-to-speech tool has limited capabilities in terms of naturalness and expressiveness, and may not provide the nuanced intonations and emotions required for sophisticated audio production. Users often prefer using AI voice generators for more emotive content.

AI voice generator

An AI voice generator, on the other hand, uses advanced AI algorithms trained on natural human voices to produce ultra-realistic AI voices and AI narration. AI voice technology doesn’t simply convert text to speech; it creates human-like voices for video voiceovers. AI voiceover generation tools often offer a variety of voice options, languages, and accents, allowing users to select voices that align with their target audience. This technology is particularly valuable for businesses looking to produce high-quality voiceovers for videos, e-learning, and more.

Use cases

Realistic AI voices for diverse use cases

Create training videos with natural-sounding AI voices in minutes, instead of weeks. Replace boring text-based training manuals with engaging videos.

Generate educational content with lifelike AI voices to increase learners' engagement. Create lectures with voiceovers in just a few clicks.

Improve your customer experience and satisfaction by transforming your knowledge base articles into short videos with natural AI voices.

Keep your employees and stakeholders engaged with natural-sounding and realistic internal communication and corporate videos.

Create professional-looking explainer videos, product videos, and brand videos without hiring a video production or recording studio.

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400+ AI voices in 130+ languages

Effortlessly create content for a global audience in multiple languages. Choose from 400+ high-quality voices in 130+ languages and accents.

  • Diverse speaking styles
  • Male and female voices
  • Automated translation

AI text-to-speech videos in minutes

Generate natural-sounding voiceovers and videos by simply typing in text. With Synthesia's AI video maker, there's no need for cameras, microphones, or separate audio files.

  • AI text to voice in minutes
  • Built-in AI video editor
  • AI avatars for voiceovers
Convert text to video

Clone your own voice

Create your own lifelike AI voice using Synthesia's built-in voice cloning feature. Generate your own voiceovers without any equipment.

  • Automated cloning process
  • Ready in a few weeks
  • Perfect for a custom avatar

Generate high-quality AI voices with Synthesia

Natural-sounding speech

Synthesia's text-to-voice generator produces the most advanced AI voices in multiple languages and accents, while also allowing you to correct the pronunciation if needed.

Easy-to-use app interface

Synthesia is an intuitive platform that offers AI voice acting and converts text to video seamlessly. All without the need for complex editing tools.

Adjust speech with SSML tags

Fine-tune the AI narration to your liking: emphasize specific words, add pauses, and tweak the pronunciation to create even more lifelike voices.

Translate TTS voiceovers

With Synthesia's integrated translation tool, effortlessly adapt any video and audio content into multiple languages. Cater to global audiences with ease.

simplify your process

4 benefits of AI text-to-speech tools

  • Consistent quality of voiceovers in contrast to traditional voiceover methods
  • Instant results: generate voice content using advanced AI voices in seconds
  • Improved accessibility for those using screen readers
  • Cost reduction: users can save up to 50% compared to traditional voiceover methods

Customer stories

Pain points solved by AI voice generation

G2 Logo 5 Star review

Faster video creation

"Synthesia’s AI voiceovers sold me instantly. They give us the ability to pivot and create video content much faster than before"

Ann Stutler
Senior Manager of Training & Learning at Division Maintenance Group
G2 Logo 5 Star review

No actors - no costs

"Relying on external agencies and hiring voiceover actors in multiple language was extremely costly. So it would either mean stretching the budget or no video at all."

Jason Etherington
Global L&D Sales Learning Strategy Manager at Xerox
G2 Logo 5 Star review

Speed, simplicity and ease

"We can record anytime and anywhere with greater speed, simplicity, and ease. It not only optimizes work schedules but also increases productivity and benefits the quality of our educational materials."

Tue S. Synthesia custoemr
Pedro da Silva
Global Educational Services Manager at Fiery

AI safety & security

People first, always. We prioritize the secure, safe, and ethical use of artificial intelligence in our product development processes.

SOC 2 & GDPR compliant

Our data handling practices, systems, and processes have been independently audited and certified.

Trust & Safety team

Our Trust and Safety team ensures the protection of your data and the ethical application of AI.

Content moderation policy

We use a combination of human and AI moderation processes to safeguard our community from bad actors.

AI policy and regulations

We actively engage with regulatory bodies and champion the formulation of robust AI policies and regulations.

10 reasons why Synthesia is the best AI voice generator


Effortless AI narration

Tired of spending hours searching for the right voice-acting professionals? Struggling with self-recording? Our voice generation tool automates the narration process. Just paste or type your text, and watch as it's transformed into a natural human voice in just a few minutes.


Save time and money

Traditional voice recording is time-consuming and expensive. With AI there's no need to hire voice actors or buy expensive equipment. You reduce your voiceover costs by 50% and cut 95% of your video production time.


400+ different voices

Whether you need a friendly and engaging voice for YouTube videos or professional voiceovers for explainer videos, Synthesia has a vast library of voice options, accents, and languages. Choose the perfect voice to resonate with your target audience.


Personalization at your fingertips

Make each narration unique with customizable options. Adjust the pronunciation using SSML to make your AI-generated text-to-speech voice sound just right.


Authentic and expressive

How good can an AI-generated voiceover sound? AI voices are trained on human speech, so they sound natural and expressive, providing a human touch that engages listeners and keeps them captivated.


Global reach

Break language barriers effortlessly with multilingual AI audio files. Reach a wider audience without the hassle of hiring multilingual voice actors.


Maintain consistent quality

Create content with a consistent brand voice. Establish a recognizable human-like voice that resonates with your audience.


Enhance accessibility

Make your content more inclusive by providing AI audio versions for visually impaired individuals and those who prefer auditory consumption. Synthesia also automatically generates closed captions for all videos.


Voice cloning

Clone your own voice to provide consistent and instantly recognizable AI audio across your content. With voice cloning, you can maintain a cohesive brand identity and a familiar tone that resonates with your audience.


Make changes with ease

With Synthesia you can simply make changes to the text and update the video without the need to record a voiceover from scratch. This is a valuable feature to keep your content updated at all times without spending additional time or resources.


All your AI voice questions answered

What is an AI voice?

An AI voice is a synthetic voice generated by artificial intelligence, designed to mimic human speech patterns and tones.

How to use AI voices?

AI voices can be utilized by accessing voice generation platforms or APIs, inputting desired text, and selecting the preferred voice type or accent. Once processed, the AI outputs the text in audio format, which can then be saved, shared, or integrated into applications.

What is an AI voice generator?

An AI voice generator is software that converts written text into humanlike voices. It can be customized to different speech styles, ages, genders, and accents and offers an easy translation to over 120 languages.

What is the best AI voice generator?

According to G2 reviews, the best AI voice generator on the market is Synthesia. The text-to-speech tool allows users to generate both ultra-realistic AI voices and videos with human-like AI avatars to narrate the voiceover. All without the use of video editing or recording equipment.

Are there any free AI voice generators?

Try Synthesia's free AI voice generator to test out its voice generation capabilities. Simply pick a voice, type in your script into the best free AI text-to-speech tool, and press 'Play' to hear the result.

Can I make an AI of my own voice?

To create your own AI voice using Synthesia, contact the support team to guide you through the voice creation process. Once you have submitted the needed consent and voice recordings, Synthesia will take 5-6 weeks to process it. Then, your own AI voice will appear in your Synthesia account, ready to be paired up with any avatar.

What is the AI voice generator everyone is using?

The best text-to-voice (AI text-to-speech tool) that everyone is using is Synthesia, according to G2 reviews. It combines the most advanced AI voices with state-of-the-art generative video capabilities that allow users to generate realistic videos with voiceovers in minutes.

How to use an AI voice generator?

  1. Type in your script into the text-to-speech tool or use an AI script generator
  2. Choose an AI voice
  3. Hit play to generate
  4. Download the voiceover

How to make an AI voiceover?

To make an AI text-to-speech voiceover, go to Synthesia's text-to-speech video creator and follow these steps:

  1. Sign up for Synthesia
  2. Create a new video by choosing a template
  3. Paste your video script and choose an AI voice to generate the text-to-speech voiceover
  4. Edit the video by adding an AI avatar, images, music, videos, and more
  5. Generate and download your video