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VoiceSpeechmatics

Speechmatics

Enterprise speech APIs — real-time STT, TTS, and voice agents.

Category
Voice
Pricing
FREEMIUM
Source
Proprietary
Hosting
Hybrid
Platforms
API
Models
Self-contained (on-device)
Verified
Jun 10, 2026

Speechmatics provides speech-to-text (batch and sub-second real-time), text-to-speech, and a Flow API for building voice agents, with accuracy that holds up across accents and dialects in 55+ languages. The same engine deploys in cloud, container, on-prem, or fully on-device, and it powers products from Adobe, LiveKit, and Ubisoft.

Capabilities 5

What it actually does — grouped by capability family.

  • Voice agent (secondary capability)
  • Transcription (STT) (primary capability)
  • Speech synthesis (TTS) (secondary capability)
  • Speaker diarization (secondary capability)
  • Speech translation (secondary capability)

Pros & cons

  • STT, TTS, and voice agents in one API
  • 55+ languages supported
  • Free tier (8 hrs of STT per month)
  • ISO 27001, SOC 2, HIPAA compliant
  • Pricier than budget STT rivals
  • TTS newer than its core STT
  • Enterprise-leaning packaging

Tags

Further reading

Alternatives to Speechmatics (3)

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    Speech recognition API with batch and real-time streaming transcription, speaker diarization, and language detection. Its Universal models pair with optional Speech Understanding features (summarization, sentiment, redaction) so a single API can build conversation-intelligence products. Starts with a free credit and pay-as-you-go, per-second billing.

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  • View ElevenLabs details
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    ElevenLabs

    ElevenLabs

    Text-to-speech, voice cloning, and multilingual dubbing.

    Hosted speech synthesis at near-human quality — TTS, voice cloning, multilingual dubbing, and conversational voice agents. Default choice when you need a voice that sounds like a person, not a robot.

    Best-in-class voice realism
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Open Speechmatics