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Best voice authentication APIs

Pronunciation API

A pronunciation API is a software interface that allows developers to integrate a pronunciation feature into their applications.

Voice & Speech Technology Free 7-Day Trial

100% uptime 148ms avg MCP ready

Virtual Phone Number Capture API

The Virtual Phone Number Capture API allows users to create phone numbers for multiple countries, making it ideal for applications that require phone verification and SMS reception.

Communication & Messaging Free 7-Day Trial

100% uptime 192ms avg MCP ready

Communication Authenticator API

"Communication Authenticator API: Ensure email accuracy effortlessly. Confirm deliverability, syntax, and domain validity for seamless communication. Simplify your verification process."

Communication & Messaging Free 7-Day Trial

100% uptime 153ms avg MCP ready

Voice Transcription API

The Voice Transcription API efficiently converts speech into text with high accuracy, enabling effortless integration into diverse systems and workflows.

Voice & Speech Technology Free 7-Day Trial

100% uptime 57ms avg MCP ready

ULTRA Text-to-Speech API

Move beyond standard synthesis. Our High-Definition (HD) Generative Tier offers voices that breathe, pause, and emote naturally.

Voice & Speech Technology Free 7-Day Trial

100% uptime 1,057ms avg MCP ready

Speaker Verification

PresentID Speaker verification API checks whether two voices belong to the same person or not. This capability is potentially useful in call centers.

Voice & Speech Technology Free 7-Day Trial

100% uptime 394ms avg MCP ready

Secure Call Validator API

Secure Call Validator API identifies and validates virtual phone numbers, helping to prevent fraud and ensuring authenticity in communication.

Security & Cybersecurity Free 7-Day Trial

100% uptime 475ms avg MCP ready

Secure Phone Number Verification API

Ensure user trust with our Secure Phone Number Verification API, providing instant, accurate validation for optimal security.

Security & Cybersecurity Free 7-Day Trial

100% uptime 89ms avg MCP ready

Card Authenticator API

Secure your retail operations with the Card Authenticator API, validating customer creditworthiness for informed decisions.

Finance & Payments Free 7-Day Trial

100% uptime 137ms avg MCP ready

Voice to Text API

The Voice to Text API accurately converts spoken language into written text, providing real-time transcription and enabling voice command features for various applications.

Voice & Speech Technology Free 7-Day Trial

100% uptime MCP ready

Phone Number Authentication API

Use our Phone Number Authentication API for seamless user onboarding and enhanced security against fraud.

Security & Cybersecurity Free 7-Day Trial

100% uptime 651ms avg MCP ready

Virtual ID Generator API

The Virtual ID Generator API generates virtual identities with personal and business data such as name, address and corporate profile. Ideal for form and database testing.

Tools & Utilities Free 7-Day Trial

100% uptime 826ms avg MCP ready

Text Authenticity API

The Text Authenticity API quickly identifies AI-generated text, providing real-time analysis and adaptability for content moderation, fraud prevention and more.

Natural Language Processing (NLP) Free 7-Day Trial

100% uptime 1,194ms avg MCP ready

Authentic Email Verification API

Ensure email deliverability with our Authentic Email Verification API, boosting your communication success.

Communication & Messaging Free 7-Day Trial

100% uptime 577ms avg MCP ready

Email Authentication API

Verifies email syntax, domain and email delivery, with details about the address and domain.

Security & Cybersecurity Free 7-Day Trial

100% uptime 1,531ms avg MCP ready

Marketing Outreach Email Authenticity API

Boost your outreach success with the Marketing Outreach Email Authenticity API, ensuring genuine engagement.

Communication & Messaging Free 7-Day Trial

100% uptime 762ms avg MCP ready

English Phonetics API

This API returns phonetic spellings of words in IPA, ideal for pronunciation guidance, dictionaries, and voice recognition models.

Voice & Speech Technology Free 7-Day Trial

100% uptime 670ms avg MCP ready

IMEI Verification API

Ensure device authenticity with our IMEI Verification API to prevent fraud and protect users.

Security & Cybersecurity

100% uptime 823ms avg MCP ready

Text to speech API - Speechify API

✨The Text-to-Speech API lets you convert any text into natural, expressive speech in multiple languages and voices.🗣️

Voice & Speech Technology Free 7-Day Trial

100% uptime 4,645ms avg MCP ready

Voice Recognition API

Extracts voices and converts spoken content into text from an audio file.

Voice & Speech Technology Free 7-Day Trial

100% uptime 1,148ms avg MCP ready

Phonetic Pronunciation API

Retrieve accurate phonetic transcriptions of English words instantly. Perfect for speech apps, linguistics tools, education platforms, and pronunciation training systems.

Voice & Speech Technology Free 7-Day Trial

100% uptime 871ms avg MCP ready

Phonetic Transcriber API

Return phonetic spellings of English terms for educational, linguistic, or speech processing use cases in a lightweight, structured response.

Voice & Speech Technology Free 7-Day Trial

100% uptime 975ms avg MCP ready

Language Phonetics API

A fast and reliable API that converts words to phonetic transcriptions for learning pronunciation or training speech-to-text engines.

Voice & Speech Technology Free 7-Day Trial

100% uptime 1,003ms avg MCP ready

Speech Capture API

The Speech Capture API transforms audio files into text with high accuracy. Ideal for sales transcripts, KPI analysis and overcoming auditory captchas.

Voice & Speech Technology Free 7-Day Trial

100% uptime 13,953ms avg MCP ready

IMEI Authentication API

Authenticate devices seamlessly with our IMEI Authentication API service for robust security.

Security & Cybersecurity

100% uptime 3,829ms avg MCP ready

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Best voice authentication APIs

Pronunciation API

Virtual Phone Number Capture API

Communication Authenticator API

Voice Transcription API

ULTRA Text-to-Speech API

Speaker Verification

Secure Call Validator API

Secure Phone Number Verification API

Card Authenticator API

Voice to Text API

Phone Number Authentication API

Virtual ID Generator API

Text Authenticity API

Authentic Email Verification API

Email Authentication API

Marketing Outreach Email Authenticity API

English Phonetics API

IMEI Verification API

Text to speech API - Speechify API

Voice Recognition API

Phonetic Pronunciation API

Phonetic Transcriber API

Language Phonetics API

Speech Capture API

IMEI Authentication API

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