Best TTS tools

Updated on
December 29, 2023
Best Tools
December 29, 2023

How Do You Choose the Right Text-to-Speech Tool for Your Needs?

Have you ever wondered how the digital world would sound if it could speak to you? Imagine flipping through an e-book and having it narrate its own story, or browsing a website as it reads out the content in a voice so lifelike, it's almost indistinguishable from a human's. That's the power of Text-to-Speech (TTS) technology, and it's revolutionizing the way we interact with text. But with a plethora of TTS tools available, how do you choose the one that best fits your needs? Whether you're an educator looking to make learning more interactive, a content creator aiming to produce engaging audiobooks, or someone who relies on accessibility tools to navigate the digital space, the perfect TTS solution is out there.

An avatar speaking the audio that was typed into a smartphone to indicate text-to-speech synthesis
Photo: Canva/DeepBrain AI Avatar “Maria”

In the quest for the most natural-sounding and adaptable TTS tools, we've sifted through the digital noise to bring you a comprehensive guide to the best of the best. Did you know that the latest advancements in TTS technology can deliver speech that's nearly indistinguishable from a live human voice? Or that certain tools offer multilingual support, allowing your content to reach a global audience with the click of a button? This blog post delves into the intricacies of TTS tools, breaking down their key features, advantages, and limitations. From the seamless integration into your daily workflow to the subtle nuances that make speech sound authentic, we'll explore what sets these tools apart. So, are you ready to discover which TTS tool will give voice to your text? Let's dive in and find out.

1. Deepbrain AI's TTS

DeepBrain AI’s AI Studios video editing software indicating their text to speech feature with AI Avatar “Jonathan.”
Photo: AI Studios/DeepBrain AI/Canva

Deepbrain AI's foray into Text-to-Speech (TTS) technology marks a significant leap forward in the domain of artificial intelligence. Their cutting-edge TTS tool stands out as a revolutionary advancement, not merely an incremental improvement over existing voice synthesizers. By focusing on delivering a truly human-like auditory experience, Deepbrain AI's TTS transcends the typical expectations of clarity and precision in automated voice systems. Users are treated to a level of synthesis that not only replicates the nuances of human speech but does so with such finesse that it blurs the line between synthetic and real, potentially revolutionizing how we interact with machines.

The sophistication of Deepbrain AI's TTS technology lies in its ability to capture the subtle inflections, tone, and emotional resonance that characterize natural human communication. This is not just a tool that reads text aloud; it's an innovation that imbues digital speech with the warmth and familiarity of a human voice. As a result, applications ranging from customer service bots to audiobook narrations benefit from an enhanced level of engagement and realism, offering users an auditory experience that is both immersive and convincingly authentic.

Key Features:

  • Natural Sounding Voices: At the heart of Deepbrain AI's TTS lies a sophisticated algorithm that breathes life into synthetic speech. The voices generated are not simply human-like; they embody the intricacies of human speech, complete with the ebb and flow of natural intonation. This results in interactions that are not only more pleasant but also significantly more engaging and realistic, enhancing user experience across various platforms.
  • Multiple Languages Support: With an extensive language library, Deepbrain AI's TTS tool is a polyglot in its own right. It supports an impressive range of languages and dialects, making it an invaluable asset for businesses and content creators aiming to connect with a global audience. This multilingual capability ensures that no matter the audience, the message is delivered with precision and authenticity.
  • Real-Time AI Avatar for Conversatio: Deepbrain AI's TTS goes beyond mere voice synthesis. It integrates with real-time AI avatars, offering a level of interactivity that surpasses traditional text-to-video solutions. This unique feature allows for real-time conversations with avatars that are incredibly lifelike, boasting a 96.5% similarity to human counterparts in high resolution.
  • Fast & Low Latency: Speed is of the essence, and Deepbrain AI's TTS technology excels with its fast and low-latency capabilities. Processing in under one second, it enables streaming inference and utilizes distributed GPU and lightweight machine learning models, ensuring that interactions are as immediate as they are smooth.


  • The high-quality, natural-sounding speech synthesis provided by Deepbrain AI's TTS doesn't just sound good; it captures the listener's attention and holds it, making it ideal for applications where voice quality is paramount.
  • Its wide language support not only caters to a global audience but also breaks down language barriers, making technology more accessible and inclusive.


  • As a sophisticated tool, it may come at a higher price point than simpler TTS services.
  • May require technical knowledge to integrate into complex systems.

2. Google Text-to-Speech

Google’s Cloud text-to-speech logo. A blue hexagon with three lines. The middle line becomes a sound wav
Photo: Google Cloud Text-to-Speech AI

Google's Text-to-Speech (TTS) tool is an integral part of its cloud services, recognized for delivering high-quality, natural-sounding speech synthesized from text. This tool is particularly useful for developers looking to add voice capabilities to their applications, making digital content more accessible.

Key Features:

  • WaveNet Voices: Google's TTS leverages advanced WaveNet technology, a deep neural network for generating raw audio, to produce speech that closely mimics human voices, enhancing the listener's experience with its natural cadence.
  • Extensive Language Selection: It supports a wide array of voices across multiple languages and dialects, allowing developers to cater to a global audience without language barriers.
  • Text and SSML Support: The platform accepts both plain text and Speech Synthesis Markup Language (SSML), which provides detailed voice customization options, enabling developers to fine-tune speech patterns and inflections for more dynamic outputs.


  • The use of WaveNet technology ensures high-quality voice output that is often indistinguishable from actual human speech, setting a standard for clarity and naturalness in the industry.
  • Its broad language support and user-friendly interface make it an accessible choice for developers of all skill levels, while seamless integration with other Google services enhances its utility in complex projects.
  • Google TTS is equipped with a vast selection of voices and dialects, and its compatibility with SSML allows for intricate voice customizations, making it a versatile tool for various applications.


  • While Google's TTS provides exceptional quality, cost considerations can be a significant factor for developers with high-volume needs, as pricing scales with usage.
  • Compared to some specialized TTS tools, Google's offering may have limitations in voice customization options, which might be a drawback for those needing highly tailored voice synthesis.

3. Amazon Polly

A blue haired cockatoo with no other facial features. Inside of a white circle with its name, “Amazon Polly,” below it.
Photo: Amazon Polly

Amazon Polly stands out as a cutting-edge service provided by AWS (Amazon Web Services), which is expertly engineered to transform written text into realistic speech. This innovative technology allows developers to integrate natural-sounding voice capabilities into their applications, thereby enhancing user experiences and fostering more intuitive interactions. By leveraging advanced deep learning technologies, Amazon Polly is capable of delivering high-quality speech that can pronounce challenging words and names correctly, making it an invaluable tool for creating dynamic and accessible content.

Key Features:

  • Lifelike Voices: Polly is equipped with a diverse range of realistic voices, thanks to its deep learning technology that ensures natural-sounding speech output.
  • Real-time Streaming: This feature is particularly beneficial for interactive applications, as it allows for the streaming of audio in real-time, creating a seamless conversational experience.
  • Neural Text-to-Speech (NTTS): Amazon Polly's NTTS technology offers an enhanced speech quality that surpasses traditional text-to-speech systems, providing a more refined and humanlike voice.


  • The real-time streaming capability of Amazon Polly is a game-changer for developers creating interactive applications, such as games or virtual assistants, where immediate audio feedback is crucial.
  • AWS is known for its commitment to innovation, and Polly benefits from this with continuous updates and improvements, ensuring that the service remains at the cutting edge of TTS technology.
  • With a choice between standard and neural TTS voices, developers can select the best option for their specific use case, whether it's for cost savings or for achieving the highest quality speech synthesis.


  • The pricing structure of AWS can be intricate and may lead to higher costs at scale, which requires careful planning and management to avoid unexpected expenses.
  • Developers may need a certain level of AWS technical expertise to seamlessly integrate Polly into their applications, which could be a hurdle for those less familiar with the AWS ecosystem.

4. IBM Watson Text to Speech

IBM Watson’s logo. A purple gradient circle with lines through it and 5 lines on top of the circle to indicate intuition.
Photo: IBM Watson Text to Speech

IBM Watson's Text to Speech service is a prime example of how artificial intelligence and machine learning can revolutionize the way we interact with technology. This sophisticated platform doesn't just convert text into speech; it goes a step further by producing natural-sounding audio that mirrors human conversation.

Key Features:

  • Expressive Synthesis: Watson's TTS is capable of conveying a wide range of emotions and tones, allowing for more nuanced and engaging speech outputs that resonate with listeners.
  • Voice Transformation: This feature provides the unique ability to transform the perceived gender and age of the synthesized voice, offering further customization to match the needs of various content types and audiences.
  • Custom Model: IBM Watson allows users to train custom voice models tailored to their specific requirements, which can be particularly beneficial for creating unique brand voices or for specialized applications.


  • The emotionally expressive options available in Watson's TTS service enable developers to create speech outputs that can adapt to the context and emotional tone of the text, providing a more humanlike interaction.
  • With customizable voice models, users have the flexibility to craft a unique voice that can differentiate their services and provide a more personalized experience.
  • IBM places a strong emphasis on data security and privacy, ensuring that user data is handled with the utmost care, which is a critical consideration for businesses and developers alike.


  • The advanced features and customization options come with a steeper learning curve, which might be challenging for those new to IBM's TTS service or AI technologies in general.
  • The free tier of Watson TTS may be limiting for developers looking to explore the full range of features or for those with higher usage requirements, necessitating an upgrade to a paid plan.

5. Microsoft Azure Cognitive Services TTS

Microsoft Azure Cognitive Services’ logo. Blue cloud with white tech lines going through it that end with a circle.
Photo: Microsoft Azure Cognitive Services

Microsoft Azure's Text-to-Speech service stands as a pivotal component within the extensive suite of cognitive services, offering advanced speech synthesis capabilities that seamlessly convert text into natural-sounding speech. This powerful service caters to a wide array of application requirements, from enhancing accessibility features to providing voice interfaces for virtual assistants. By leveraging cutting-edge AI and machine learning technologies, Azure's Text-to-Speech service enables developers to create more interactive and accessible applications, thereby enriching the user experience across various platforms and devices.

Key Features:

  • Custom Neural Voice: Azure's standout feature allows users to create a unique voice that represents their brand, providing an opportunity to stand out in a crowded digital landscape.
  • Extensive Language and Voice Selection: The service boasts an extensive portfolio of languages and voices, giving developers the tools to reach a diverse audience.
  • Real-time Access: Azure provides APIs for real-time access to TTS services, facilitating the development of responsive and interactive applications that require immediate vocal output.


  • The ability to create a custom neural voice is a significant advantage, enabling businesses to cultivate a distinctive brand identity through unique voice representations.
  • Azure's TTS service is known for its high-quality voice output and its wide selection of languages, which makes it a versatile choice for developers looking to localize their applications for different markets.
  • Integration with other Azure services is streamlined, allowing for the creation of sophisticated, multi-faceted applications that leverage the full power of Microsoft's cloud ecosystem.


  • The costs associated with extensive use of Azure's TTS services can add up, making it important for developers to monitor their usage and manage their budgets effectively.
  • For those not already versed in Microsoft's cloud offerings, the complexity of Azure's platform may present a learning curve that requires additional time and resources to navigate successfully.
Feature Comparison Deepbrain AI TTS Google TTS Amazon Polly IBM Watson TTS Microsoft Azure TTS
Natural Sounding Voices Advanced algorithm for human-like voices WaveNet technology for natural voices Lifelike voices with deep learning Emotionally expressive synthesis High-quality voice output
Language Support Extensive multilingual support Wide array of languages and dialects Multiple languages Multiple languages with customization Extensive language and voice selection
Real-Time Capabilities Real-time AI avatar for conversations Not specified Real-time streaming Not specified Real-time access via APIs
Customization Not specified Text and SSML support Standard and neural TTS voices Customizable voice models Custom Neural Voice for brand identity
Speed & Latency Fast processing with low latency Not specified Not specified Not specified Not specified
Integration May require technical knowledge User-friendly interface and integration with Google services Requires AWS technical expertise Steeper learning curve for advanced features Streamlined integration with Azure services
Cost Potentially higher price point Pricing scales with usage Complex pricing structure Free tier may be limiting Costs can add up with extensive use
Unique Selling Point Human-like auditory experience High-quality voice output with WaveNet Real-time streaming and continuous improvements Emotionally expressive options and data security Ability to create a distinctive brand voice

When evaluating TTS tools, it's important to consider functionality, ease of use, cost-effectiveness, and customer support. Each tool has its own strengths and may be better suited to different types of projects or organizations. Deepbrain AI's TTS tool stands out for its high-quality, natural-sounding voices, and the ability to customize speech, making it a strong contender for those prioritizing voice quality and versatility.

Remember to continuously update your knowledge about the latest TTS tools to provide the most accurate and up-to-date information. As the technology evolves, new features, languages, and integration capabilities will emerge, further enhancing the capabilities of TTS tools in various applications.

Best TTS tools
Liz Ryu

Data Specialist

I meticulously ensure data quality and organization, contributing to the foundation of AI models. I nurture the data ecosystem, preserving and securing linguistic data. My role extends beyond data to enhancing AI models by providing linguistic insights and innovative ideas, particularly in Chinese and Japanese languages.

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