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Speechmatics

by Speechmatics · Since 2006
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ActiveAvailable globallyCloudOn-premiseFree tier
Quick facts
VendorSpeechmatics
Year launched2006
StatusActive
Location1st Floor 1 Cambridge Sq, Cambridge, CB4 0AE, United Kingdom
Countries servedGlobal
Languages46
Integrations4+
Free tierYES
Free trialYES
Contact salesYES

About Speechmatics

An AI speech technology platform offering APIs for speech-to-text, real-time translation, and text-to-speech.

Speechmatics is an enterprise-focused AI speech technology company providing APIs for speech-to-text, text-to-speech, and voice agent development. Its core offering is highly accurate speech recognition that supports over 56 languages, with a particular strength in handling accented speech and code-switching. The platform offers flexible deployment models, including cloud, on-premise, and on-device, to meet varying security and privacy requirements. Key features include real-time transcription with low latency, speaker diarization, and custom dictionaries. Pricing includes a free tier for developers with 50 hours of transcription per month, a pay-as-you-go Pro plan, and custom Enterprise plans. Support is available through documentation, a Discord community, and email for paid tiers.

Pros & Cons

Pros
  • Supports over 56 languages, including multilingual code-switching in a single transcript.
  • Offers flexible deployment options: cloud, on-premise, and on-device.
  • Features real-time speaker diarization to identify who said what.
  • Provides a generous free tier with 50 hours of transcription per month.
  • Strong focus on accuracy for real-world audio, including accents and noisy environments.
Cons
  • Text-to-Speech API currently has limited language support (English only).
  • Direct phone support is not publicly listed as an option.
  • Enterprise pricing for high-volume use requires contacting sales.

Features

Key features

Multilingual Speech-to-Text

Transcribes audio across 56+ languages, including handling code-switching where speakers move between languages in one conversation.

Real-Time Transcription

Provides low-latency speech-to-text in less than one second for live use cases like captioning and voice agents.

Flexible Deployment Options

Can be deployed in the cloud (SaaS), on-premise in a customer's own environment, or directly on-device for privacy and offline capability.

Speaker Diarization

Identifies and labels different speakers in an audio stream to track who said what and when, available for both batch and real-time processing.

Custom Dictionary

Allows users to add up to 1,000 custom words, such as proper nouns or industry-specific jargon, to improve transcription accuracy.

Additional features

Text-to-Speech API

Generates natural, low-latency speech from text, initially supporting English with more languages planned.

Advanced Punctuation and Casing

Automatically applies language-specific capitalization and punctuation to improve transcript readability.

Language Identification

Automatically detects the language being spoken in an audio file, simplifying workflows for multilingual content.

Confidence Scores

Provides a confidence score for each transcribed word to help identify areas that may need human review.

Numeral Formatting

Automatically identifies and formats numbers, dates, and currencies into a readable format.

Profanity and Disfluency Detection

Can detect and optionally remove or tag profanities and hesitation words like 'um' or 'ah'.

Word Timings

Generates accurate timestamps for every word in the transcript, enabling features like subtitle synchronization.

Voice Agent Integrations

Provides native integrations with frameworks like LiveKit, Vapi, and Pipecat to build voice agents.

Pricing

Free trial
Free version
Request a quote
Promo Offer

Monthly plans

Free
USD 0/mo
per usage · billed monthly
  • 50 hours (3,000 minutes) of Speech-to-Text per month
  • 1 million characters of Text-to-Speech per month
  • 2 concurrent real-time sessions
  • Support for 56+ languages
Source: vendor pricing page →
Pro
USD 0.13/mo
per usage · billed monthly
  • 50 hours (3,000 minutes) of Speech-to-Text per month free
  • 1 million characters of Text-to-Speech per month free
  • 50 concurrent real-time sessions
  • Online email support

Price is per hour of speech-to-text, starting from $0.129/hr. Includes a free monthly allowance.

Source: vendor pricing page →
Enterprise
Custom
contact sales for pricing
  • Volume discounts
  • Unlimited scale
  • Privacy-first deployment options (On-prem, On-device)
  • Custom models
  • No rate limits

Custom volume discounts and flexible deployment options. Contact sales for pricing.

Source: vendor pricing page →

Countries & Languages

Global
Countries served
46
Interface languages
1
Billing currencies

Interface languages

ArabicBashkirBasqueBelarusianBengaliBulgarianCantoneseCatalanCroatianCzechDanishDutchEnglishEsperantoEstonianFinnishFrenchGalicianGermanGreekHebrewHindiHungarianIndonesianInterlinguaIrishItalianJapaneseKoreanLatvianLithuanianMalayMalteseMandarinPolishPortugueseRomanianRussianSlovakSlovenianSpanishSwedishTurkishUkrainianVietnameseWelsh

Billing currencies

🇺🇸USD

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