Top 10 Free AI Text-to-Speech Tools

Many AI text-to-speech tools now support Vietnamese, allowing users to turn written content into natural-sounding audio without recording their own voice. These tools can also adjust emotion and export MP3 files for videos, podcasts, or documents. Connect Tech has compiled 10 notable tools, highlighting their strengths, limitations, and ideal use cases to help you choose more easily.

1. ElevenLabs – Create Natural and Expressive AI Voices

ElevenLabs focuses heavily on speech synthesis, Voice Design, and Voice Cloning rather than simply reading text with a fixed voice. ElevenLabs documentation currently confirms that Vietnamese is supported in Flash v2.5 alongside many other languages. The system also uses content and punctuation to interpret some of the emotional nuances in spoken output.

One of ElevenLabs' most notable strengths is its ability to turn text into emotionally expressive speech. Users can adjust Stability and Similarity settings and choose suitable voices to control how consistent the voice sounds. Script structure, punctuation, exclamation marks, and other instructions can also influence how the model delivers each sentence.

The platform currently offers a Free plan with a monthly credit allowance. However, ElevenLabs' pricing policy states that a Commercial License starts from the Starter plan, so content creators who plan to use generated audio commercially should verify the usage rights included in their plan before publishing.

• Strengths: Expressive voices, many creative controls, voice cloning support, and strong performance for content that requires distinctive voice delivery.
• Limitations: Users who only need simple text narration may not need the platform's full feature set, and commercial usage rights depend on the selected plan.
• Choose ElevenLabs when: You create YouTube videos, podcasts, audiobooks, advertisements, or storytelling content where voice quality and expression matter.

2. Vbee AIVoice – An AI Voice Tool for Vietnamese Content Creators

Vbee has built an ecosystem that includes TTS, Voice Cloning, AI Dubbing, and the AIVoice API. The tool allows users to adjust pronunciation, add pauses, preview audio, include background music, and download audio in bulk, making it suitable for both short-form content and ongoing audio production.

Vbee's main strength is its Vietnamese AI voice system. According to the company's Help Center, the platform currently provides 20 Vietnamese voices alongside hundreds of international voices. Users can choose male voices, female voices, and different regional accents to better match their target audience.

Vbee also supports MP3 and WAV exports. Video creators can use the generated audio for YouTube, TikTok, or voiceover content, while businesses can connect the AIVoice API to websites, chatbots, virtual assistants, or automated audio publishing systems.

Voice Cloning is another notable feature. Vbee currently offers both instant and professional voice cloning options for Vietnamese. For community voices, commercial usage rights depend on the terms set by the voice owner and the platform, so users should review the relevant policies before using them in large-scale campaigns.

• Strengths: Strong Vietnamese support, multiple voice options, cloning, dubbing, API access, and audio customization tools.
• Limitations: Some advanced features depend on the service plan, and Voice Cloning may have specific restrictions based on voice type and account level.
• Choose Vbee when: You mainly produce Vietnamese content and want an ecosystem that can scale from simple voiceovers to dubbing or API integration.

3. Viettel AI – Convert Vietnamese Text into Diverse AI Voices

Viettel AI provides speech synthesis for use cases such as movie reviews, advertising, audiobooks, podcasts, audio news, and educational content. Its current interface allows users to enter Vietnamese text, select a voice, and adjust speaking speed before generating audio.

One of the platform's key advantages is its ability to convert Vietnamese text into AI speech with different gender and regional options. Viettel AI currently provides Northern, Central, and Southern Vietnamese voices, while also allowing users to adjust reading speed for advertising, news, or long-form content.

Viettel AI is not limited to content creation. Its API documentation provides a TTS endpoint that allows external systems to send text and receive generated audio while controlling speech speed. This makes it possible for businesses to add voice output to call centers, chatbots, applications, or automated content workflows.

For trial use, Viettel AI currently states that new accounts may receive a character allowance to test the service. These offers and limits may change over time, so users should check the official platform before planning long-term production.

• Strengths: Optimized for Vietnamese, offers regional voice options, provides API access, and supports various business use cases.
• Limitations: Users who need a large international character voice library or advanced Voice Design features may need to compare it with global platforms.
• Choose Viettel AI when: Vietnamese is your main requirement or your business needs to integrate TTS into an existing product or system.

4. CapCut Text-to-Speech – Generate AI Voice Directly While Editing Videos

CapCut is suitable for creators who want to generate voiceovers and edit videos within the same workflow.

CapCut's biggest advantage is convenience. Users do not need to create audio on another website, download it, and import it into their video editor. CapCut allows users to add text to the timeline, select the Text-to-Speech feature, choose a voice, and generate narration directly inside the project. The feature is currently available across CapCut Web, desktop, and mobile.

This workflow is especially useful for TikTok, Instagram Reels, and YouTube Shorts. When a script changes, editors can update the text and regenerate the voice without managing multiple external audio files.

CapCut also allows users to choose from available voice styles and adjust elements such as speed or pitch depending on the features available in their version. The voice and language library may vary by version, region, or account, so Vietnamese creators should test the available voices on their own device before building a fixed workflow around them.

It is important to remember that CapCut is primarily a video editing platform. It is highly convenient for social content, but it does not focus as deeply on Voice Cloning, speech APIs, or enterprise workflows as platforms such as Azure or Gemini.

• Strengths: Direct integration with the video timeline, fast workflow, and fewer export/import steps.
• Limitations: Advanced voice control may be more limited than on dedicated speech generation platforms.
• Choose CapCut when: You mainly create short-form videos and want to minimize the number of tools used during production.

5. Google Gemini TTS – Control Speech Style with Prompts

Google Gemini TTS is suitable for developers and businesses that want detailed control over speaking style through natural-language instructions.

Unlike traditional TTS systems that mainly let users choose a voice and speaking speed, Gemini TTS allows users to guide voice delivery through prompts. Google states that users can control style, accent, pace, tone, and emotional expression while generating audio with one or multiple speakers. Vietnamese with the vi-VN locale is currently listed among the supported languages.

Its prosody controls make Gemini suitable for podcasts, audiobooks, voice assistants, and content that requires different delivery styles across sections. Developers can ask the voice to sound slower, happier, more urgent, or calmer, while newer models also support pauses and vocal tags.

Newer Gemini TTS models also support streaming audio, multi-speaker output, Voice Design, and Voice Replication within supported product environments. Google currently provides both prebuilt voices and an expanded voice library within Gemini Enterprise.

Gemini TTS is not the simplest AI tool for users who only want to paste text and download an audio file within seconds. Its value becomes more apparent when integrated into applications, voice agents, or automated workflows through APIs.

• Strengths: Natural-language style control, Vietnamese support, multi-speaker capabilities, and streaming.
• Limitations: The model and API ecosystem includes many options, so beginners may need time to understand which product best fits their needs.
• Choose Gemini TTS when: You need to integrate speech generation into a product or want more detailed voice control than standard speed and pitch settings.

6. Microsoft Azure AI Speech – TTS for Enterprise Systems

Microsoft Azure AI Speech is suitable for businesses and developers that need a speech service with APIs, SDKs, and cloud integration.

Azure Speech supports the vi-VN locale and currently lists Vietnamese voices such as HoaiMyNeural, NamMinhNeural, and Linh:MAI-Voice-2-Flash. Microsoft also includes Vietnamese among the languages supported by its related neural and HD voice technologies.

Azure allows businesses to control speech output through Speech Synthesis Markup Language (SSML). SSML helps systems define pauses and adjust certain aspects of pronunciation, rhythm, and delivery depending on the capabilities of the selected voice. This is useful when companies need to maintain consistent audio output instead of manually editing each file.

The platform also supports systems that require batch synthesis, real-time synthesis, or speech integration for chatbots and assistants. Developers can connect Azure through APIs and SDKs rather than relying on manual operations in a user interface.

Azure provides several speech technologies beyond TTS, including Speech-to-Text, pronunciation assessment, and certain personal voice capabilities. This gives businesses room to build a broader voice ecosystem as their projects expand.

• Strengths: Comprehensive technical documentation, Vietnamese support, strong APIs and SDKs, and suitability for enterprise systems.
• Limitations: Users who only need voiceovers for a few videos may find Azure more complex than creator-focused tools.
• Choose Azure AI Speech when: Your project requires integration, cloud management, and scalability rather than manual audio generation.

7. FPT AI Marketplace – Vietnamese TTS Through APIs

FPT AI Marketplace is better suited to businesses that need Vietnamese speech services through APIs rather than individual users looking for a simple voice studio.

This distinction is important if you previously used FPT.AI Console. FPT.AI announced that service packages for individual users on the old Console officially stopped operating on August 29, 2026. FPT now directs users to continue using its AI services through FPT AI Marketplace in API form.

This change means FPT.AI should be viewed differently in a 2026 comparison article than it was in older content. FPT should no longer be presented simply as a consumer VoiceMaker website following the previous workflow. The platform is now more relevant to businesses, developers, or technical teams that want to integrate speech capabilities into websites, applications, and operating systems.

FPT AI Marketplace remains worth considering among Vietnamese solutions because businesses can access AI services through APIs and integrate them into their own products. This model gives technical teams greater control over interfaces, input data, and how generated audio is used throughout the customer journey.

• Strengths: Focused on Vietnamese business needs and provides AI services through APIs.
• Limitations: No longer the most convenient choice for creators who simply want to open a website, paste a script, and generate a voice as they could before.
• Choose FPT AI Marketplace when: Your business has an in-house technical team or development partner and needs to integrate TTS into a custom system.

8. Speechify – Suitable for PDFs and Long Documents

Speechify is suitable for people who want to listen to documents rather than focus mainly on producing voiceovers for videos.

Speechify takes a different approach from ElevenLabs or CapCut. The platform converts PDFs, Word documents, EPUB files, articles, emails, and other content into audio so users can listen while studying, working, or traveling. Speechify currently works on the web, iOS, Android, Windows, Mac, and through browser extensions.

One useful feature is OCR support. Users can scan printed documents or pages and have the system read them aloud. Synchronized text highlighting also helps learners listen while following the content on screen.

Speechify currently offers a free version and trials for some premium features. Users can adjust playback speed, while higher-tier plans provide more voice choices and additional speed controls.

For Vietnamese, it is important to distinguish between the reading application and the API. Speechify's API documentation currently lists Vietnamese vi-VN as beta, meaning support is still being improved. Businesses planning to use its Vietnamese API should therefore test real content before making a final decision.

• Strengths: Convenient PDF, book, and document reading; multi-device support; ideal for listening instead of reading.
• Limitations: Not the first choice when the main goal is creating character voices or highly expressive voiceovers.
• Choose Speechify when: You frequently work with PDFs, reports, books, or long documents and want to convert reading time into listening time.

9. Narakeet – Create Voiceovers for Slides, Lessons, and Videos

Narakeet is suitable for teachers, e-learning professionals, and businesses that need to generate narration from documents or presentation slides.

Narakeet combines TTS with audio and video creation workflows. Users can enter text, upload Word files, or use PowerPoint presentations to generate narration, reducing the need to re-record audio whenever slides change.

The platform currently lists more than 900 voices across more than 100 languages and regions. Its Vietnamese page specifically presents 95 Vietnamese voices, including multiple male and female options, while allowing users to generate sample audio without registering first.

Narakeet can generate MP3 files from written content or MP4 files from presentations. It also supports speed and volume adjustments in more advanced workflows, allowing educators to match narration pace with the amount of information shown on each slide.

Narakeet's main strength is not advanced Voice Cloning. The platform is better suited to users who need to produce large amounts of narration, training videos, or educational material from existing content.

• Strengths: Vietnamese support, many voice options, Word and PowerPoint processing, and strong suitability for e-learning and presentations.
• Limitations: Character Voice Design and detailed emotional control are not its main focus compared with dedicated generative voice platforms.
• Choose Narakeet when: You frequently convert slides, lessons, or training materials into audio and video.

10. Luvvoice – A Simple Online Audio Generator for Beginners

Luvvoice is suitable for users who want to create an audio file quickly without setting up a complex system.

Luvvoice provides a simple online text-to-speech process: enter your content, select a language and voice, generate the audio, then listen to or download the MP3 file. Its official website currently lists more than 200 voices across more than 70 languages, including Vietnamese.

The platform is also suitable for people looking for a free online text-to-speech option before subscribing to a professional platform. Luvvoice currently provides free access for some basic needs while offering paid plans with higher limits and additional features.

For Vietnamese, users can select a voice, preview the result, and download MP3 files. Some Luvvoice interfaces also allow users to adjust rate, pitch, and volume before generating audio. The tool can be used for videos, lessons, podcasts, articles, or general listening needs.

Luvvoice is also expanding into Voice Cloning, file-to-speech, audiobooks, and APIs. However, anyone looking to generate AI voice content for commercial purposes should carefully review the terms. Paid plans explicitly mention commercial usage rights, so users should not assume that all audio created under the free option comes with the same rights.

• Strengths: Easy to use, Vietnamese support, MP3 export, and suitable for quick testing.
• Limitations: Its ecosystem and advanced speech controls are not the main reasons to choose Luvvoice over Gemini, Azure, or ElevenLabs.
• Choose Luvvoice when: You are a beginner, want to test TTS in a browser, and do not yet need a complex workflow.

There is no single AI text-to-speech tool that is ideal for every use case. ElevenLabs stands out when you need expressive voices; Vbee and Viettel AI are worth considering when Vietnamese is the priority; CapCut is convenient for social videos; Speechify focuses on documents; Narakeet works well for lessons; while Gemini, Azure, and FPT AI Marketplace are better suited to APIs and enterprise systems.

Before choosing a platform, use the same sample paragraph to test several tools, especially one that contains proper names, numbers, English words, and long sentences. This approach helps you evaluate pronunciation, prosody, and real-world consistency instead of relying only on voice demos prepared by the provider