Text-to-Speech (TTS)
Large Language Model (LLM)
Speech Recognition
Computer Vision
Chatbot Platform
AI Ethics and Bias Detection Tools
Text-to-Speech (TTS)
Large Language Model (LLM)
Speech Recognition
Computer Vision
Chatbot Platform
AI Ethics and Bias Detection Tools
| Name | Latency (time taken to generate speech) | Language Support | Cost | Integration Options | Supported Code Langauges | Support for different audio files | Customization Options (Pitch, Speed, Tone) | Link |
|---|---|---|---|---|---|---|---|---|
| Amazon Polly | N/A | English, Spanish, French, German, Italian, and more. | $4.00 per 1 million characters | REST API SDKs available for multiple programming languages. Integration with other AWS services. | Java, Node.js, .NET, PHP, Python, Ruby, Go, and C++ | MP3, OGG, PCM, and Vorbis. | Customization of pitch, speed, and volume. Offers specific voice styles like conversational, newsreader, and newscaster. | Click here |
| Google Cloud Text-to-Speech API | Approximately 0.518 seconds | Chinese, English, French, German, Spanish, and more. | Standard Voices: $4.00 per 1 million characters. WaveNet Voices: $16.00 per 1 million characters. | REST API: Standard HTTP requests. gRPC API: High-performance remote procedure calls. Client Libraries: Available for Python, Java, Node.js, Go, C#, Ruby, PHP, and more. Google Cloud Console: For managing and configuring API usage. | Python, Java, Node.js, Go, C#, PHP, Ruby, C++, TypeScript, Terraform, YAML | MP3, LINEAR16 (WAV), OGG_OPUS, FLAC (Free Lossless Audio Codec), and MULAW (G.711 μ-law) | Customization of pitch, speed, and tone through adjustments in pitch and speed settings. Custom Voice feature, enables the creation of unique voice models with your own studio-quality audio recordings for a tailored speech output. | Text-to-Speech AI: Lifelike Speech Synthesis | Google Cloud |
| IBM Watson Text to Speech | The service can take more than 30 seconds to process the audio and generate a response. | English, Spanish, French, German, Chinese (Mandarin and Cantonese), and more. | $0.02 USD per thousand characters. | API Integration: Use the Watson Text to Speech API directly by making HTTP requests. SDKs and Libraries: IBM provides SDKs for various programming languages. Cloud Platforms: Explore pre-built integrations on platforms like IBM Cloud, AWS, or Google Cloud. Chatbots and Assistants: Convert chatbot responses to speech for a natural experience. Custom Implementations: Tailor integrations to your needs. | Java, Python, Node.js (JavaScript), Ruby, PHP, Go, Swift, and C#. | N/A | Customization options for pitch, speed, and tone. | Click here |
| Microsoft Azure Text to Speech | N/A | English, Spanish, French, Chinese, German, and more. | Commitment Tiers – Azure - Standard ; Speech to Text, Standard · $25,000 for 50,000 hours, $0.50 per hour ; Custom, $1,920 for 2,000 hours, $0.96 per hour. | REST APIs, SDKs, and client libraries across multiple programming languages, including Python, Java, JavaScript, C#, and many others. | C#, Java, Python, JavaScript/Node.js, TypeScript, PHP, Ruby, Objective-C, Swift, Go, or PowerShell. | WAV (Waveform Audio File Format), MP3 (MPEG Audio Layer III), and OGG (Ogg Vorbis). | Customize voice, language, name, style, and role for your speech output. You can also use multiple voices and adjust the emphasis, speaking rate, pitch, and volume. In addition, SSML features the ability to insert prerecorded audio, such as a sound effect or a musical note. | Click here |
| Nvidia NeMo | N/A | English, Spanish, French, German, Chinese, and more. | N/A | N/A | N/A | WAV, MP3, and FLAC | Click here | |
| Mozilla TTS | N/A | English, German, French, Italian, Spanish, and more. | N/A | N/A | N/A | N/A | Customization options including pitch adjustment for altering tone, speed control for regulating speech rate, and tone manipulation to convey various emotions or styles. | Click here |
| Tacotron | N/A | English, Mandarin Chinese, Spanish, French, German, and more. | N/A | N/A | N/A | N/A | Pitch modification, Speed alteration, Tone control | N/A |
| WaveNet | Approximately 0.518 seconds. | English, Spanish, French, German, Japanese, and more. | N/A | N/A | N/A | N/A | Customization options for pitch, speed, and tone adjustment. | N/A |
| Acapela Group | N/A | English, Spanish, French, German, Chinese, and more. | N/A | N/A | N/A | N/A | Customization options for pitch, speed, and tone. | N/A |
| iSpeech | Approximately 200 milliseconds | English, Spanish, French, German, Italian, and more. | Hacker Monthly: Free Annual Plan:Free Junior Monthly: $29/mo Annual Plan: $299/yr (2-month Free) Growth Monthly: $399/mo Annual Plan: $3999/yr (2-month Free) Elite(L33T) Monthly: Contact Us (low custom price) Monthly: Contact Us (low custom price) | RESTful Web API, SDKs for iOS, Android, Java, and Windows, plugins for WordPress and Drupal, custom enterprise solutions, cloud-based services, and browser extensions. | Java, .NET, PHP, Flash, Python, Ruby | wav, mp3, ogg, wma, aiff, alaw, ulaw, vox, mp4 | Customization options include adjustments for pitch, speed, and tone. | Click here |
| Nuance Vocalizer | Approximately 200 milliseconds | English, Spanish, French, German, Chinese, and more. | N/A | SDKs for platforms like iOS, Android, Windows, and Linux, RESTful APIs for web-based applications, client libraries for languages such as Java, C#, Python, and JavaScript, integration with assistive technologies for accessibility, custom integration services for unique requirements, and VoiceXML support for creating interactive voice response (IVR) systems. | C/C++, Java, .NET languages (C#, VB.NET), Python, Objective-C, Swift, JavaScript, PHP, Ruby, Go, Rust, Kotlin | MIDI, AIFF / AIFC, MP3 (MPEG), WAV, AU (ULAW) | Customization options: Pitch, Speed, Tone. | Click here |
| Cepstral | N/A | English, Spanish, French, German, Italian, Portuguese, and more. | N/A | SDKs for custom applications, APIs for web service access, plugins for popular frameworks, a command-line interface, middleware integration, and custom services. | C/C++, VB, .Net, Java, Python, C# | WAV (Waveform Audio File Format), MP3 (MPEG-1 Audio Layer III), OGG (Ogg Vorbis), AU (Audio File Format), and FLAC (Free Lossless Audio Codec). | Customization options Pitch, Speed, Tone. | Click here |
| Voxygen | N/A | English, French, Spanish, Italian, and more. | N/A | Software Development Kit (SDK), APIs, plugins for popular frameworks and platforms like Unity and Xamarin, command-line interfaces (CLIs), middleware integration solutions, and custom integration services. | C/C++, Java, Python, C#, Objective-C/Swift, JavaScript, PHP, Ruby, Go | WAV, MP3, OGG, FLAC, AAC, and AMR. | Customization options to adjust parameters such as pitch, speed, and tone. | Click here |
| ResponsiveVoice | N/A | English, Spanish, French, German, Italian, and more. | ResponsiveVoice Pro $39 per month billed annually $49 billed monthly | JavaScript SDK for web applications, a RESTful API for real-time speech synthesis, a dedicated WordPress plugin for easy website integration, mobile platform SDKs for iOS and Android, and customizable services for enterprise clients. | JavaScript, Python, Java, C#, Swift/Objective-C, PHP, Ruby, Node.js, C/C++, SwiftUI, Dart, and Go. | MP3, WAV, OGG, AAC, FLAC, WEBM, AMR, MIDI | Customization options including pitch control, speed adjustment, and tone modulation. | Click here |
| ReadSpeaker | N/A | English, Spanish, French, German, Italian, and more. | start at $4/month | APIs for programmatic access to TTS services, Software Development Kits (SDKs) for multiple languages and platforms, plugins for popular Content Management Systems (CMS), custom integration services for tailored solutions, support for Speech Synthesis Markup Language (SSML) for fine-tuning speech output, and direct integration via web interfaces. | JavaScript, Java, Python, C# / .NET, C/C++, Swift / Objective-C, PHP, Node.js, Ruby, Go (Golang) | MP3, WAV, AAC, OGG, FLAC, M4A, WMA, AIFF, and WebM, | Customization options, pitch, speed. Also provides a selection of voices with different characteristics such as gender, age, accent, and language. | N/A |
| Voicery | N/A | English, French, German, Dutch, Spanish, and more. | $0.001 per character | RESTful APIs for web and mobile apps, SDKs for various programming languages, potential plugins for CMS platforms, and custom solutions for enterprise needs. | Python, JavaScript/Node.js, Java, C#, and others. | mp3, wav, pcm, or json. Using json | Customization options, Pitch, Speed, Tone. | Click here |
| Lyrebird | N/A | English, Spanish, French, German, Italian, and more. | N/A | API, SDKs for various languages, and potentially specific plugins or libraries. | Python, JavaScript (Node.js), Java, Ruby, PHP, C#, Swift, Objective-C | N/A | Customization options, pitch, speed, and tone. | N/A |
| SpeechSynthesis | N/A | English, Spanish, French, German, and more. | N/A | Direct HTML integration using JavaScript, incorporation into JavaScript frameworks like React or Angular, server-side integration with technologies such as Node.js, utilization of third-party libraries, and development of browser extensions. | N/A | N/A | Customization options, Pitch, Speed/Rate, Tone/Prosody. | N/A |
| Dragon NaturallySpeaking | N/A | English, Spanish, French, German, Italian, and more. | N/A | Windows operating system, integration with Microsoft Office applications, custom integration via SDK for developers, support for third-party software applications, and accessibility features for individuals with disabilities. | N/A | N/A | Customization options for pitch, speed, and tone. | N/A |
| Synthesis.ai | N/A | English, Spanish, French, German, Italian, and more. | N/A | API access for direct incorporation into applications, SDKs for easier development, and potentially plugins/extensions for seamless integration with existing systems. Additionally, webhooks and third-party integrations may also be available for enhanced connectivity and functionality. | N/A | N/A | Customization options Pitch, Speed/Rate, Tone. | Click here |
