[2026 Edition] Top 10 AI Speech Synthesis App Comparison! Thorough Explanation of Features and Usage, from Free Services to Paid Reading Software

AI text-to-speech apps and software that can convert text into natural-sounding speech are attracting attention!

With advancements in AI technology, it is now possible to read text aloud with very high quality.

Moreover, some of the recommended AI text-to-speech apps and software are available for free.

AI text-to-speech apps can be used in various situations, such as narrating videos, creating language learning materials, and converting business documents into audio.

In this article, we will carefully select and introduce the latest recommended AI text-to-speech apps and software for 2026!

We will explain the features and usage in detail, from free apps to paid software, so why not find the perfect text-to-speech app for you?

[Free] Recommended AI Text-to-Speech App "Ondoku"

If you are looking for an AI text-to-speech app or software, we recommend Ondoku!

Ondoku is a high-performance AI text-to-speech web app that can be used for free.

You can turn text into speech right away without needing to install anything.

With high-performance speech synthesis AI, it can synthesize easy-to-hear audio that sounds like a professional narrator is speaking.

Since it supports over 48 languages, including English, Chinese, and Korean, it can be used for YouTube video narration for overseas audiences or announcements for inbound tourists.

And Ondoku is free!

By registering and logging in, you can read up to 5,000 characters, so you can create video narration for free right now.

If you are looking for an AI text-to-speech app or software, we recommend Ondoku!

Why not try using Ondoku for free first?

[Latest for 2026, Free Options Included] Explaining How to Choose AI Text-to-Speech Apps and Software

AI text-to-speech apps and software are recommended for video narration, in-store announcements, or language learning materials.

First, we will explain how to choose the right AI text-to-speech app or software.

Why are AI text-to-speech apps and software recommended?

• I want to create narration for videos
• I want to create announcements for shops or facilities
• I want language learning materials with native pronunciation

In such cases, AI text-to-speech apps and software are recommended.

AI text-to-speech apps and software are applications or programs that synthesize and read text aloud when you input it.

The main feature is the ability to synthesize clear, easy-to-hear audio that sounds as if a real person is reading it.

Thanks to advancements in AI technologies like deep learning, it is now possible to synthesize much more realistic audio compared to the mechanical-sounding voices of the past.

Moreover, AI text-to-speech apps are available for free!

If you want to synthesize audio for free, the latest AI text-to-speech apps and software are recommended.

Why not use this article as a guide to creating your narration or announcement audio?

What are the types of AI text-to-speech apps and software?

Text-to-speech apps and software include:

• AI text-to-speech web apps used from a browser
• AI text-to-speech software used by installing it

The advantage of web-app-type text-to-speech services available from a browser is that they can be used for free!

Furthermore, they can be used immediately whenever you need them without installation.

Another advantage is that they support many foreign languages, including Japanese and English.

On the other hand, AI text-to-speech software installed on a PC is characterized by many programs having set characters.

There are programs sold as package or download versions, and free software that can be used at no cost.

The supported languages are often fixed for each software, such as only Japanese or only English.

Check if commercial use is allowed! Some paid apps/software may prohibit commercial use

When choosing an AI text-to-speech app or software, it is recommended to check if commercial use is allowed.

When monetizing video production or using it for business in companies or public institutions, you must choose an app or software that allows commercial use.

Some paid software may allow monetization for videos but prohibit commercial use for corporate purposes.

In this article, we will also explain whether the recommended AI text-to-speech apps and software are OK for commercial use, so please use it as a reference.

[Free Options Available] Top 10 Recommended AI Text-to-Speech Apps and Software

Now, let's specifically introduce what kind of AI text-to-speech apps and software are recommended!

1. Ondoku
2. A.I.VOICE
3. Kantan! AITalk
4. CeVIO AI
5. VOICEPEAK
6. COEIROINK
7. VOICEVOX
8. CoeFont
9. Bouyomi-chan
10. MYukkuriVoice

Comparison of Features for Recommended AI Text-to-Speech Apps

App Name	Features	Price
Ondoku	Recommended AI text-to-speech app available for free	Free
A.I.VOICE	Paid app using VOICEROID characters	From 12,980 yen
Kantan! AITalk	Simple paid AI text-to-speech app	16,500 yen
CeVIO AI	Paid app with expressive character voices	From 14,718 yen
VOICEPEAK	Paid app that allows use of many characters	From 6,800 yen
COEIROINK	AI text-to-speech app for creative work	Free
VOICEVOX	AI text-to-speech app with character voices	Free
CoeFont	Paid app that can read in the voices of celebrities	3,300 yen/month (Individual) From 55,000 yen/month (Corporate)
Bouyomi-chan	Windows app that reads in Yukkuri Voice	Free
MYukkuriVoice	Mac app that reads in Yukkuri Voice	Free

1. Ondoku: The highest quality recommended AI text-to-speech web app available for free

App Name	Ondoku
Features	Recommended AI text-to-speech app available for free High-quality, easy-to-hear audio No installation required Supports foreign languages
Price	Free

Ondoku is the recommended web app you should try first if you are looking for speech synthesis apps or software!

The main feature is that it can synthesize high-quality audio for free using the latest AI speech synthesis technology.

It is a web app used from a browser, so no troublesome installation work is required at all.

Just input text and press a button to synthesize natural AI speech in just a few seconds.

Japanese voices can be selected from over 16 types, including female voices, male voices, and children's voices.

With the latest AI speech synthesis engine, you can generate easy-to-hear audio that sounds like it is being read by a professional narrator.

Reading speed and pitch can also be freely adjusted.

There is also a conversation feature that uses multiple voices, so you can create the exact audio you want to match your needs.

Ondoku also supports foreign language speech synthesis. Recommended for narration and announcements.

Ondoku also features multi-language support!

AI text-to-speech is possible in over 48 languages, including English, Chinese, and Korean.

It is also recommended for YouTube video narration for overseas audiences or creating announcements for inbound tourists.

Commercial use OK! Broadly supports everything from YouTube monetization to business use

Of course, Ondoku allows commercial use.

It is also recommended for YouTube monetization and business use in corporations.

Even when used for free, commercial use is possible, so you can create video audio and facility narration for free (Credit is required for free use. See here for details).

Recommended AI text-to-speech app available for free

And Ondoku can be used for free!

• Without registration/login: 1,000 characters
• With registration/login: 5,000 characters

Since you can read this many characters, you can try AI text-to-speech for free right now.

Video production, language learning, audio conversion of business documents, improvement of accessibility—Ondoku is a recommended AI text-to-speech web app that can be used for a wide range of purposes.

If you are looking for a text-to-speech app or software, why not try Ondoku first?

2. A.I.VOICE / A.I.VOICE2: Paid AI text-to-speech software with famous characters

App Name	A.I.VOICE
Features	Paid app using VOICEROID characters Supports Windows and Mac
Price	From 12,980 yen

A.I.VOICE is a paid text-to-speech software developed by AI Inc.

It is a product that succeeds VOICEROID, and A.I.VOICE2 is currently the latest version.

Its biggest feature is the lineup of popular character voices such as "Yuzuki Yukari" and "Kotonoha Akane/Aoi".

If you want to create VOICEROID videos (Boiro videos), purchasing this software is recommended.

It is sold as a one-time purchase paid software compatible with both Windows and Mac.

Commercial use for individuals is generally possible with product purchase, but a separate license is required for corporate use.

3. Kantan! AITalk: Paid AI text-to-speech software with orthodox voices

App Name	Kantan! AITalk
Features	Simple paid AI text-to-speech app No set characters
Price	16,500 yen

Kantan! AITalk is an AI text-to-speech software also developed by AI Inc., similar to A.I.VOICE.

It is a software installed on a PC and is compatible with Windows only.

Unlike the A.I.VOICE series, Kantan! AITalk does not have character illustrations set.

It is a convenient paid software when you do not need character personality in the voice.

However, it is a software exclusively for individuals, and commercial use by companies is not allowed.

4. CeVIO AI: AI text-to-speech software capable of AI speech synthesis with character voices

App Name	CeVIO AI
Features	Can read in character voices Good at emotional expression Proprietary AI engine
Price	From 14,718 yen

CeVIO AI is a speech synthesis software capable of realistic AI reading with character voices.

It is characterized by having both AI text-to-speech software and singing software available.

It is a one-time purchase paid software exclusive to Windows that can read text in the voices of unique characters such as "Sato Sasara" and "Suzuki Tsudumi".

For each character, a "Talk Voice" for the reading software and a "Song Voice" for the singing software are sold.

With its proprietary AI speech synthesis technology, it can read text aloud with rich emotion.

Commercial use conditions for individuals are relatively lenient, but corporate use requires a separate license.

5. VOICEPEAK: Paid AI text-to-speech software with various voices

App Name	VOICEPEAK
Features	Paid app that allows use of many characters Products available with multiple characters included
Price	From 6,800 yen

VOICEPEAK is an AI text-to-speech software that supports Linux in addition to Windows and Mac.

Like A.I.VOICE and CeVIO, it is a paid software capable of reading in character voices.

Voices without set character illustrations are also sold, which are ideal for video narration for corporate marketing or branding.

Another feature is that there are packages that include multiple character voices, allowing you to create videos where characters talk to each other.

When using it commercially, caution is required as you must follow the terms of use for each character.

6. COEIROINK: AI speech synthesis software for creative activities

App Name	COEIROINK
Features	AI text-to-speech app for creative work
Price	Free

COEIROINK is an AI text-to-speech software developed specifically for creative activities.

It is a desktop-type software compatible with Windows, Mac, and Linux that can read text in various character voices.

In addition to official and recognized characters, the voice model "MYCOE" created by users can also be used.

It also supports fine adjustments such as intonation and emotional expression.

It is free software developed as open source and allows commercial use, but prior confirmation is essential as terms differ depending on the voice model used.

Character terms of use are generally based on individual use in most cases.

7. VOICEVOX: Popular AI speech synthesis software with character voices

App Name	VOICEVOX
Features	AI text-to-speech app that features Zundamon
Price	Free

VOICEVOX is an AI text-to-speech software popular for its unique character voices.

The biggest feature is being able to read in the voices of popular characters such as "Zundamon," "Shikoku Metan," and "Kasukabe Tsumugi."

It is a free desktop-type software compatible with Windows, Mac, and Linux that uses AI technology to read in natural voices.

Because fine adjustments of intonation and voice parameters are possible, professional-level voice editing is achievable.

The software itself is free and allows commercial use, but caution is required as you must also follow the terms of use for characters like Zundamon.

8. CoeFont: Paid web app capable of reading in voices of voice actors and entertainers

App Name	CoeFont
Features	Paid app that can read in the voices of celebrities Free service available for social contribution
Price	3,300 yen/month (Individual) From 55,000 yen/month (Corporate)

CoeFont is a web app capable of AI voice reading from a browser.

It is a paid service with plans available for individuals and corporations.

Its feature is being able to read with AI voices created based on the voices of voice actors, narrators, and entertainers, and it also supports multi-language reading.

Additionally, it is possible to create an AI voice based on your own voice.

They also provide free services for those who can no longer speak due to illness.

9. Bouyomi-chan: Standard app popular among streamers

App Name	Bouyomi-chan
Features	Windows app that reads in Yukkuri Voice Can be linked with commentary software
Price	Free

Bouyomi-chan is a standard text-to-speech software widely used in game streaming and live broadcasting.

It can read in a distinctive voice called "Yukkuri Voice."

The feature is that it has extensive linking functions with streaming software such as OBS.

It is a standard free software for reading YouTube stream comments and is particularly recommended for streamers.

It is also widely used in "Yukkuri Commentary" and "Yukkuri Let's Play" on YouTube and Nico Nico Douga.

It is free software compatible only with Windows.

Because it uses an older version of the speech synthesis engine "AquesTalk," it is also characterized by allowing commercial use.

Unlike the latest AI speech synthesis engines, it can only produce mechanical and unique voices, but instead, it is a distinctive app that can do things only this software can.

10. MYukkuriVoice: Yukkuri Voice reading software compatible with Mac

App Name	MYukkuriVoice
Features	Mac app that reads in Yukkuri Voice
Price	Free

MYukkuriVoice is a reading software recommended for Mac users.

This software also allows reading in the unique voice called "Yukkuri Voice."

It is free software, but a commercial license for the speech synthesis engine "AquesTalk" is required if used for commercial purposes.

Since there are few reading software options for Mac, it is a valuable app for those who want to create Yukkuri Commentary or Yukkuri Let's Play videos.

[Free is OK] Explaining How to Use AI Text-to-Speech Apps!

From here, for those who want to actually use an AI text-to-speech app/software, we will explain how to use Ondoku!

[Free] How to use the AI reading app "Ondoku"

To use Ondoku for AI reading, first open the top page of the official website.

When you open the top page, a text input field is displayed, so input the text you want to read. Copy-pasting is also fine.

Next, select the language.

After choosing the language, select the type of voice.

In the case of Japanese, over 16 types of voices can be chosen, including female, male, and children's voices.

You can listen to Japanese voices in this article.

You can listen to foreign language voices in this article.

If you need to adjust the reading speed or pitch, you can move the sliders left or right to adjust.

Now, preparations for reading are complete!

Press the "Read" button to begin reading.

The AI reading process is completed in just a few seconds.

The screen will switch, and the reading result will be displayed.

The created audio can be saved in MP3 format via the "Download" button.

In this way, with the AI reading web app Ondoku, anyone can easily synthesize easy-to-hear AI audio!

Since it can be used for free, why not try using Ondoku first?

Recommended Ways to Use AI Text-to-Speech Apps by Purpose!

The possibilities for AI reading apps that can synthesize easy-to-hear audio are infinite!

They can be used for a wide range of tasks, from video production and store announcements to language learning.

[Video Production] Create YouTube Narration for Free

A recommended use for AI text-to-speech apps is narration for video production.

Simply inputting script text completes the audio, so you can add narration much more easily than by recording it yourself.

Unlike when recording yourself, no editing is required, and the audio created with the AI text-to-speech app can be used as narration as it is.

The fact that expensive recording equipment is not required is also a key point.

What's important when considering monetization through video posting on YouTube is choosing apps/software that allow commercial use.

Ondoku allows commercial use, so you can feel secure when monetizing your channel.

Since foreign language reading is also possible, you can create videos for overseas audiences and gather even more viewers!

Announcements for shops and facilities can also be created for free with AI reading apps!

AI text-to-speech apps can also be utilized for announcements in shops and facilities!

Since easy-to-hear audio like a professional narrator can be created, you can guide users of shops and facilities clearly.

Furthermore, by playing announcements that introduce services or products, it is possible to increase sales!

What's particularly noteworthy is announcements for inbound tourists.

Creating announcements in foreign languages like English yourself is very difficult, but with AI text-to-speech apps, they can be easily produced for free.

By playing announcements in shops, facilities, or transportation systems troubled by overtourism, you can accurately convey facility usage methods and manners to inbound tourists.

This is a recommended way to use AI reading apps that is actually being used in the transportation and tourism industries, such as on Shinkansen trains.

[Shadowing] AI reading apps are also recommended for language learning!

AI text-to-speech apps are also recommended for language learning.

Since you can quickly create foreign language audio with native pronunciation, you can immediately learn the pronunciation of unknown words or the rhythm of sentences.

A learning method called "shadowing" is particularly recommended.

Because you can create teaching audio with content you like, you can shadow sentences tailored to your learning goals, such as business or tourism.

Please also see this article for information on shadowing.

When using an AI text-to-speech app for language learning, choosing an app/software with multi-language support is recommended.

Ondoku supports over 48 languages, so it can be used for learning not just English, but languages from all over the world.

Why not find the best AI text-to-speech app for you?

Thanks to advancements in AI technology, it is now possible to synthesize very high-quality audio with free AI text-to-speech apps.

The latest AI can be conveniently utilized for a wide range of purposes, such as video production, store announcements, and language learning!

For beginners or those who want to easily create high-quality audio right now, Ondoku, which can be used for free from a browser, is recommended.

If you are looking for an AI text-to-speech app, why not try using Ondoku for free first?

■ AI voice synthesis software "Ondoku"

"Ondoku" is an online text-to-speech tool that can be used with no initial costs.

• Supports approximately 50 languages, including Japanese, English, Chinese, Korean, Spanish, French, and German
• Available from both PC and smartphone
• Suitable for business, education, entertainment, etc.
• No installation required, can be used immediately from your browser
• Supports reading from images

To use it, simply enter text or upload a file on the site. A natural-sounding audio file will be generated within seconds. You can use voice synthesis up to 5,000 characters for free, so please give it a try.