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

Speechmatics vs. Deepgram

See why developers are switching to Speechmatics for superior speech-to-text accuracy, industry-leading language support, and advanced speaker diarization.

✔️ Better accuracy

✔️ More languages

✔️ No gimmicks - trusted, transparent, reliable.

Case study

AI Media | Case study

Delivering 120X more with voice AI

Powering live content through AI-powered transcription, built on industry-leading voice AI

Case study

LiveKit | Case study

Enabling 100,000+ developers with leading speech recognition

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

Case study

NCI | Case study

Redefining real-time captioning

How NCI delivered a 99% increase in usage of automated captioning

Case study

Media Track | Case study

Delivering a 20% leap in accuracy improvements

Improved transcription performance across more than 20 languages for their global clients

Case study

Prosodica | Case study

Driving better conversations at scale

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

Experience the difference in real-time

Choose from live radio, your own voice, or sample audio to see side-by-side comparisons of Speechmatics vs Deepgram.

Why Speechmatics?

Trained on diverse, real-world data to deliver superior accuracy where it matters most.

Unmatched accuracy

Built for the real world, Speechmatics delivers unmatched accuracy in noisy environments, across diverse dialects & accents. The most inclusive STT engine.

Language coverage

55+ languages. Consistently accurate. Designed for global products & multilingual customer base to reach every voice with the same world-class quality.

Trust & transparency

No data logging by default. No surprise price hikes. With superior customer success, transparent terms, and production-grade reliability that scales.

Start building with Speechmatics today

1) 👤 Log in or signup to the Speechmatics Portal

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

3) 🔑 Enter your code: SWITCH200

4) 🚀 Start building with $200 free credit

Speechmatics vs Deepgram

A comprehensive comparison of features, accuracy, and capabilities.

Language Support

Feature	Speechmatics ⭐	Deepgram
Supported Languages	55+ languages	30+ languages
Multilingual Accuracy	Industry-leading across all languages	Varies by language
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Accuracy & Quality

Feature	Speechmatics ⭐	Deepgram
Average WER (lower is better)	6.8%	16.5%
Noisy Environment Performance	Excellent	Standard
Accent Recognition	Market-leading	Standard
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Advanced Features

Feature	Speechmatics ⭐	Deepgram
Speaker Diarization	No extra charge	Extra charge
Multi-speaker Accuracy	Market-leading	Standard
Custom Dictionary	No extra charge	Extra charge
Custom Dictionary Word Count	1000 words	100 words only
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Integration & Deployment

Feature	Speechmatics ⭐	Deepgram
Real-time Streaming
Batch Processing
SaaS Deployment
On-Premise Deployment
On-Device Deployment
Air Gapped
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Public Reviews

Feature	Speechmatics ⭐	Deepgram
G2 Rating	4.8 out of 5	4.6 out of 5
Capterra	4.5 out of 5	Not applicable
Tech Radar	4.8 out of 5	Not applicable
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Resources for AI Voice Agents

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

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

Voice Agents

Pipecat and Speechmatics: Building Voice Agents that know exactly ‘Who’ said ‘What’

Build smarter voice agents on Pipecat with Speechmatics speech-to-text, now with powerful speaker diarization for real-world, multi-speaker conversations.

SpeechmaticsEditorial Team

AI Agent Builder

How to build a conversational agent in less time than Cupid’s arrow takes to strike

What happens when you set out to build a fully functioning AI love guru with very little turnaround time? Let's find out...

Farah GoudaData Engineer

Why switch from Deepgram?

Real-Time ASR | Enterprise Differentiation | Competitive Positioning

Superior real-time accuracy

Consistently outperforms Deepgram in low-latency transcription, especially for non-English languages and challenging accents.

Broader language support

55+ languages vs. Deepgram’s 34; single model for all languages accents and dialects - covering over half the world's population.

Enterprise-grade security

ISO 27001, GDPR, HIPAA-compliant, SaaS, on-prem, private cloud options (vs. Deepgram’s cloud-first approach).

Custom Dictionary

Instant terminology tuning without retraining, unlike Deepgram’s domain-specific models which is complex and requires huge amounts of data.

Flexible pricing

Negotiable enterprise pricing and volume discounts; Deepgram appears cheaper but has hidden costs for premium features.

More than just speech-to-text

Use Speechmatic’s Voice AI stack to build powerful, fast, open-source AI Voice Agents with incredible low latency and seamless interactions.

Ready to switch to superior speech-to-text?

Join thousands of developers building the future of voice with Speechmatics. Get $200 in free credits when you sign up today.