# Speechmatics

**Canonical:** https://apis.io/providers/speechmatics/  
**Website:** https://www.speechmatics.com/  
**APIs profiled:** 7

Speechmatics is an enterprise-grade speech intelligence platform headquartered in Cambridge, UK, offering highly accurate speech-to-text APIs supporting 55+ languages with batch and real-time transcription modes. The platform provides REST APIs for batch transcription job management and WebSocket APIs for low-latency real-time streaming transcription, along with speaker diarization, speaker identification, custom vocabulary, sentiment analysis, translation, and topic detection. Speechmatics also offers a Text-to-Speech API, a Voice Agent API (early access), and a Management API for programmatic account and API key management. Deployments are available as cloud SaaS, containerized on-premises, Kubernetes, and virtual appliance options.

## Kin Score — 50.4 / 100 (developing)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 50.4).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 64.6 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 50.0 |
| Developer Ergonomics | 38.1 |
| Commercial Clarity | 57.9 |
| Access Clarity | 57.9 |

## Agent readiness — 28.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (7)

- **Speechmatics Realtime Transcription API** — WebSocket API for low-latency real-time streaming transcription supporting live audio input, speaker diarization, and partial/final transcript events.
- **Speechmatics Management API** — REST API for programmatic management of projects, API keys, usage tracking, and account administration.
- **Speechmatics Text-to-Speech API** — REST API for converting text to natural-sounding speech with multiple voice options and language support.
- **Speechmatics API Keys API** — The API Keys API from Speechmatics — 2 operation(s) for api keys.
- **Speechmatics Jobs API** — The Jobs API from Speechmatics — 4 operation(s) for jobs.
- **Speechmatics Projects API** — The Projects API from Speechmatics — 2 operation(s) for projects.
- **Speechmatics Usage API** — The Usage API from Speechmatics — 1 operation(s) for usage.

## Agentic access (1)

- **Speechmatics Agentic Access** — 15 operations · 7 acting

## Security (3)

- **Speechmatics Authentication** — apiKey · 1 scheme
- **Speechmatics Domain Security** — TLSv1.3 · HSTS · DMARC
- **Speechmatics Trust Center** — SOC 2, ISO 27001, HIPAA, GDPR

## Plans (1)

- **Speechmatics Plans Pricing**

## Tags

Speech Recognition, Speech-to-Text, Transcription, Real-Time Transcription, Batch Transcription, Speaker Diarization, Text-to-Speech, Voice AI, NLP, Audio Processing, WebSocket, REST

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/speechmatics/). Scores are computed from the provider's own public artifacts under a published rubric.