What does Speechmatics do?

Speechmatics provides speech technology and Voice AI for enterprises, offering accurate Speech-to-Text, Text-to-Speech, and Voice Agent solutions. Our models understand every voice and accent across 55+ languages, helping businesses unlock the full potential of voice data.

How accurate is Speechmatics Speech-to-Text?

Speechmatics delivers best-in-market accuracy, achieving up to 99% word accuracy and 96% medical keyword recall in industry benchmarks. Our models handle multiple accents, noisy environments, and multi speakers with ease.

What makes Speechmatics Text-to-Speech different?

Our low-latency Text-to-Speech (TTS) delivers lifelike, human-sounding voices with sub-150ms latency that is ideal for real-time conversations. Developers can stream natural speech in multiple voices and deploy it in the cloud, hybrid, or on-prem for privacy and control.

Can I build real-time voice agents with Speechmatics?

Our voice AI enables developers to build real-time voice agents that listen, understand, and respond naturally. Plug in fast with a flexible API and native integrations to power your AI voice agents.

Which industries use Speechmatics?

Speechmatics is trusted by organizations in media, healthcare, contact center, medical, finance, legal, education, and accessibility. Our technology powers transcription, translation, call analytics, and voice AI applications worldwide.

Speech to Text API built for real-world accuracy

Speech to text API designed for real-world challenges - transcribe fast, accurately, and in 56+ languages with support for code-switching, speaker diarization, and flexible deployment in cloud, on-prem, or on-device.

[alt: Industry-leading transcription accuracy in 55+ languages]

Try our live transcription for yourself

Speak into your mic and watch real-time transcription in action. Fast, accurate, and built for natural conversations.

Explore Samples

Transcribe your voice in real time or select a sample

Accurate. Scalable. Multilingual.

90%+ accuracy in the real-world Trained on real-world data - accents, noise, code-switching - our models excel where others fail. Sub-500ms latency Our API handles live and recorded audio at scale – with secure cloud or on-prem deployment options. 55+ languages, and counting From Arabic to Welsh, our speech to text API supports more languages - with global coverage and multilingual support.

Powerful Speech to Text features for your app

Designed for accuracy, security, and adaptability, our features optimize transcription accuracy, and seamless enterprise integration.

Precision transcription

Industry-leading accuracy

Consistently high performance in the most diverse, real-world audio - regardless of accent, dialect, or background noise.

Language agnostic ASR

Bilingual & multilingual support

Advanced bilingual models purpose-built to handle conversations without compromising accuracy at the expense of code-switching.

Scalable performance

Real-time and batch processing

Stream live audio or upload files in bulk. Designed for speed and scale across any workflow.

Best-in-class diarization

Speaker diarization

Accurately separates and tracks multiple speakers - even in overlapping, messy conversations.

Bespoke service

Custom Dictionary

Inject up to 1,000 domain-specific terms for accurate recognition of names, jargon, acronyms, and branded terms.

Enterprise-ready

Secure, flexible deployment

Power your products with enterprise-grade speech-to-text and Voice AI Agent APIs.

Real-world precision

Alphanumeric accuracy

Capture phone numbers, postcodes, account numbers, and reference codes exactly as spoken. 96.9% sequence accuracy on character strings, 98.0% on digits, 85.4% on mixed alphanumerics.

AI speech to text transcription in 55+ languages

Every voice, across every industry

Our AI transcription has you covered

Healthcare: Generate clinical notes at scale with Voice AI, understanding medical terminology.
Contact Centers: Capture every account number, postcode, and booking reference the first time. Real-time transcripts that raise agent performance without the callbacks.
Media: Caption, summarize, and analyze audio with speed — making content more accessible.
Conversational AI: For builders and enterprises creating voice AI agents that truly listen.

90% accuracy with <1 second latency. The fastest most accurate on the market. 60% faster than the nearest competitor. Try it out. Right now. In real-time.

Resources for speech-to-text

Technical

How to build a microbatching workflow with the Speechmatics API

Build a cleaner path between batch and real time. Learn when micro-batching makes sense, how to chunk audio, submit jobs, stitch JSON, and scale safely with the Speechmatics API.

SpeechmaticsEditorial Team

Product

Alphanumeric speech recognition: why voice assistants mangle SKUs (and how to fix it)

A guide for voice AI engineers, ecommerce platforms and warehouse teams on SKU recognition accuracy voice assistant deployments depend on: why speech recognition systems produce transcription errors on product codes, what to measure when error rates matter, and the fixes that move the needle on order picking, voice ordering and customer-facing voice AI.

SpeechmaticsEditorial Team

Use Cases

Best speech-to-text AI guide: APIs, platforms and services compared

Speech-to-text has moved from novelty to enterprise infrastructure. Here's how the leading platforms stack up in 2026 — and how to pick the right one.

Tom YoungDigital Specialist

Technical

Speed you can trust: The STT metrics that matter for voice agents

What “fast” actually means for voice agents — and why Pipecat’s TTFS + semantic accuracy is the clearest benchmark we’ve seen.

Archie McMullanSpeechmatics Graduate

[alt: Smiling man with gray hair sits against a teal background, holding a blank clipboard. He wears a blue sweater and appears relaxed and approachable, suggesting a friendly environment.]

Technical

Speech-to-text in production: what 36 years of hard lessons taught me

The founder who built speech recognition in 1989 on latency, turn detection and faulty pipelines

Dr Tony RobinsonFounder

[alt: Two soft-colored circular shapes, one greenish and one orange, are positioned on opposite sides. A central icon resembling a lightning bolt is flanked by a sound wave graphic with vertical markers, suggesting a connection or interaction between the two elements.]

Technical

You can’t hurry love, but you can hurry final transcripts

Introducing 250ms final transcripts for Voice AI

Archie McMullanSpeechmatics Graduate

Frequently Asked Questions

What languages does Speechmatics support?

1. Europe

Dutch, English, French, German, Irish, Italian, Portuguese, Spanish, Danish, Estonian, Finnish, Norwegian, Swedish, Belarusian, Bulgarian, Czech, Hungarian, Latvian, Lithuanian, Polish, Romanian, Russian, Slovakian, Slovenian, Ukrainian, Catalan, Galician, Greek, Maltese, Welsh, Esperanto, Interlingua.

2. Middle East & Central Asia

Arabic, Hebrew, Persian, Turkish, Uyghur, Bashkir.

3. South Asia

Bengali, Hindi, Marathi, Tamil, Urdu.

4. East & Southeast Asia

Cantonese, Mandarin, Japanese, Korean, Mongolian, Malay, Indonesian, Thai.

5. Africa

Swahili.

What is speech-to-text and how does it work?

Speech-to-text technology, also known as automatic speech recognition (ASR), converts spoken language into written text. It enables machines to "understand" and transcribe audio by recognizing patterns in human speech.

Why It Matters From live conversations to recorded content, speech-to-text is essential for making voice data accessible, searchable, and actionable. It powers subtitles, voice assistants, meeting notes, compliance workflows, and more.

How Speechmatics Does It Differently Speechmatics delivers world-class speech recognition across 55+ languages — with the accuracy, scalability, and flexibility global businesses need. Our models are trained on real-world, diverse audio to handle accents, noise, and code-switching effortlessly. Whether you’re working with real-time streams or large archives, Speechmatics turns audio into insight.

How much does Speechmatics cost?

Starting from $0.24 per hour of transcribed audio, falling well below this at scale with Enterprise plans.

Can Speechmatics transcribe phone numbers, postcodes, and account numbers?

Yes. Speechmatics is purpose-built for alphanumeric accuracy, hitting 96.9% sequence accuracy on character strings, 98.0% on digits, and 85.4% on mixed alphanumerics. That means phone numbers, postcodes, account numbers, SKUs, and booking references land correctly the first time. Critical for contact centres, voice agents, logistics, and any workflow where a misheard letter or digit means a callback, a failed transaction, or a broken voice flow.

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