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 53+ languages, helping businesses unlock the full potential of voice data.

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, finance, education, and accessibility. Our technology powers transcription, translation, call analytics, and voice AI applications worldwide.

Speech APIs powering Voice AI

Q: 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.

Low-latency speech-to-text for multilingual, multi-speaker conversations

Explore Samples

Transcribe your voice in real time or select a sample

Leveraging speech recognition to track customer interactions, highlight key insights, and raise contact center performance

Accurate. Secure. Global.

Speech technology built for companies with global reach and uncompromising standards for quality.

Live transcription

For use cases that can't wait

Real-time speech-to-text is here

High accuracy and low latency. STT in less than 1 second, without compromising accuracy and understanding.

Secure

STT you can trust

Deploy anywhere, no data logging

Run Speechmatics on device, on prem and in the cloud depending on your privacy needs. We don’t log your data as standard.

Languages

Find new markets

53+ languages

We cover over half the world's population with our language coverage, helping businesses expand globally.

Use Cases

Voice AI that works where it matters most

From healthcare to live media, Speechmatics delivers real-world Speech APIs with low latency, multilingual capabilities, and built for scale.

MedTech

Medical & healthcare

Support ambient scribe and dictation with our Medical Model, cutting errors on key terms by up to 50%.

AI voice agents

Voice agent builders

Sub-second, speaker-aware STT and TTS across 53+ languages. Plug in fast with a flexible API and native integrations to power AI voice agents.

Media & Broadcast

Live captioning

Deliver accurate captions for live events, sports, and news — real time, at scale, and with accuracy that holds up in the spotlight.

CCaaS

Contact center analytics

Reduce wait times, increase agent productivity and improve customer experience in contact centers with Speechmatics' voice AI.

Courtroom

Legal transcription

Speech recognition built for court reporters, legal professionals, and law firms who need unmatched accuracy across every accent and speaker — in real time.

Note-taking

Meeting platforms

Build a meeting platform that makes a real difference to your end users with automated note taking, a comprehensive feature set that covers 53+ languages.

Why developers choose our speech-to-text API

Accuracy

Accurate where it matters most

Deliver reliable transcription across accented speech, background noise, and multi-speaker conversations, not just clean recordings.

Languages

Multilingual by design

Transcribe 56+ languages with a single model, even when speakers switch between languages naturally throughout a conversation.

Conversations

Built for real conversations

Speaker diarisation and custom vocabulary are included, so transcripts identify who's speaking and capture your terminology accurately.

Models

Match the model to the moment

Select the model that best fits your use case, whether you need maximum accuracy, multilingual performance, or lower latency and cost.

Uncompromised, enterprise-level security

Enterprise security tools and controls, built for privacy-critical use cases.

ISO 27001

Privacy and compliance built in with our ISO/IEC 27001:2022 accreditation.

GDPR

Compliant with privacy and compliance directives such as the GDPR.

HIPAA

Fully compliant with the Health Insurance Portability and Accountability Act (HIPAA).

SOC 2 Type II

Trusted where privacy matters most - SOC 2 Type II-certified.

Speech-to-text API built for every language and accent

Reach more users with speech technology that understands how people actually speak. Speechmatics gives teams a multilingual speech-to-text API that can handle global languages, regional accents and multi-speaker conversations without forcing every user to sound the same.

Use one speech-to-text API to support live captions, voice agents, meeting notes, contact centre analytics and transcription workflows across international markets.

Speech-to-text API pricing that scales

Start with a free speech-to-text API plan, then move into production with usage-based pricing, volume options and enterprise support when your product is ready for more.

Free

Testing the speech-to-text API before committing

Test transcription quality, language support and integration options with 50 free transcription hours each month.

Pro

Demanding products and growing needs

Usage-based pricing for batch and real-time transcription, plus 20% savings.

Enterprise

Large-scale, regulated or privacy-sensitive deployments

Custom pricing, volume options, flexible deployment and enterprise support.

Integrate our speech-to-text API in minutes

Start building with clear documentation, flexible APIs and the tools developers need to move quickly. Create your key, connect your workflow and bring accurate speech-to-text API performance into your product.

Resources

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Use Cases

Best TTS APIs in 2026: Top 12 Text-to-Speech services for developers

From ultra-fast conversational AI to studio-quality narration, find the voice that matches your use case and budget.

Tom YoungDigital Specialist

[alt: Sound waveform overlaid on legal documents representing word error rate in legal transcription]

Use Cases

What Word Error Rate Is Acceptable for Legal Transcription?

Word error rate for legal transcription has no single acceptable threshold. But knowing how accuracy, audio quality, and review obligations connect to real legal risk is what separates a reliable transcript from a costly one.

Mieke SmithSenior Writer

Use Cases

The court reporter shortage crisis: data, causes, and what legal teams are doing about it

The court reporter shortage is reshaping litigation. Explore data, causes, and how legal teams are using digital reporting and AI transcription to adapt.

Tom YoungDigital Specialist

Technical

How Nvidia Dominates the HuggingFace Leaderboards in This Key Metric

Why predicting durations as well as tokens allows transducer models to skip frames and achieve up to 2.82X faster inference.

Oliver Parish Machine Learning Engineer

[alt: Healthcare professionals in scrubs and lab coats walk briskly down a hospital corridor. A nurse uses a tablet while others carry patient charts and attend to a gurney. The setting conveys a busy, clinical environment focused on patient care.]

Use Cases

Why AI-native EHR platforms will treat speech as core infrastructure in 2026

As clinical workflows become automated and AI-driven, real-time speech is shifting from a transcription feature to the foundational intelligence layer inside modern EHR systems.

Vamsi EdaraFounder and CEO, Edvak EHR

Power your products with enterprise-grade Voice AI

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We handle the speech, you deliver conversations that matter.

Speechmatics speech-to-text API: frequently asked questions

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

A speech-to-text API converts spoken audio into written text inside an app, product or workflow. Speechmatics can process recorded files or live audio, then return transcripts for captions, search, analytics, records and voice AI.

Is there a free speech-to-text API available?

Yes. Speechmatics offers a free plan so developers can test transcription quality, language support and integration options before moving into paid usage or enterprise deployment.

How accurate is Speechmatics' speech-to-text API?

Speechmatics is built for real-world audio, including different accents, speakers, languages and environments. Its speech-to-text API supports accurate transcription across batch, real-time and multilingual workflows.

Which languages does the speech-to-text API support?

Speechmatics supports 56+ languages, with coverage across accents, dialects and speaking styles. It can also support multilingual conversations where speakers move between languages.

Can the speech-to-text API handle multiple speakers at once?

Yes. Speechmatics supports speaker diarization, which helps identify and separate speakers in meetings, calls, legal proceedings, healthcare consultations and other multi-party conversations.

How does the speech-to-text API handle data privacy and security?

Speechmatics supports privacy-sensitive use cases with cloud, on-premise and on-device deployment options. It is built for enterprise security requirements, including ISO 27001, GDPR, HIPAA and SOC 2 Type II.