Speech Recognition API for Voice AI Agents

Start building AI Voice Agents today:

✔️ Sub-300ms latency for natural conversations

✔️ Identify multiple speakers in a conversation

✔️ 55+ languages covering diverse accents and dialects

[alt: Three conversational Voice Agents, ready to respond to incoming customer conversations.]

LiveKit | Case study

Enabling 100,000+ developers with leading speech recognition

Pairing LiveKit’s flexible agent framework with Speechmatics to build world-class agents

Smart agents start with smarter listening

See how Speechmatics handles challenging audio that breaks other voice AI

Explore Samples

Transcribe your voice in real time or select a sample

Ready for the full experience?

Speechmatics named G2 Leader in 2026

Voice AI Agents

Why Voice AI agents choose Speechmatics

Our speech recognition technology is specifically designed for the real-world challenges your AI agents face every day.

Background noise

Noise-resistant recognition

Accurately transcribe speech even in challenging acoustic environments with background noise, echo, and interference.

Accents

Accent & dialect mastery

Trained on diverse global speech patterns to understand heavy accents, regional dialects, and non-native speakers.

Diarization

Multi-speaker intelligence

Identify and separate different speakers in conversations, meetings, and complex audio scenarios.

Live

Real-time processing

Low-latency streaming recognition perfect for live conversations, calls, and interactive applications.

Secure

Enterprise security

Bank-grade encryption and compliance with GDPR, SOC 2, HIPAA and other security standards.

Insight

Advanced analytics

Detailed insights into speech patterns, confidence scores, and conversation analytics.

Your coupon: BUILD200

1) 👤 Log in or signup to the Speechmatics Portal

2) 💳 Add a valid payment card (no charge until credit is used)

3) ✅ Complete billing setup to enable coupon

4) 🔑 Enter your code: BUILD200

5) 🚀 Start building with $200 free credit

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Voice AI Agent Resources

[alt: Vapi integration launch blog social asset]

Voice Agents

Vapi and Speechmatics: Build agents that understand every voice

Ship Voice AI agents that stay readable in real time, even in noisy, multi-speaker calls.

SpeechmaticsEditorial Team

Text-to-Speech

Why we built our low-latency Text-to-Speech

Most TTS sounds great in demos but breaks in real conversations. We built ours for sub-150ms latency, natural voices, and global scale.

Stuart WoodProduct Manager

[alt: Livekit and Speechmatics partnership]

Voice Agents

Introducing real-time, speaker-aware Voice Agents with LiveKit + Speechmatics

Speechmatics brings speaker diarization to LiveKit agents - enabling them to understand not just what was said, but who said it.

Anthony PereraProduct Marketing Manager

Text-to-Speech

Non-English TTS still sounds like a Dalek

Why most voices sound natural in English but still robotic in other languages, and how to fix it.

Stuart WoodProduct Manager

Ready to give your AI Agents the best ears?

Join thousands of developers building next-generation voice AI applications our industry-leading speech tech.