# AssemblyAI

**Canonical:** https://apis.io/providers/assemblyai/  
**Website:** https://www.assemblyai.com/  
**APIs profiled:** 3

Built by AI experts, AssemblyAI's Speech AI models include accurate speech-to-text for voice data (such as calls, virtual meetings, and podcasts), speaker detection, sentiment analysis, chapter detection, PII redaction, and more. AssemblyAI provides powerful APIs for transcribing and understanding audio data at scale. The platform supports real-time streaming transcription via WebSocket, asynchronous batch transcription, and audio intelligence features including summarization, auto chapters, entity detection, and content safety filtering. SDKs are available for Python, Node.js, Ruby, Java, and Go.

## Kin Score — 42.7 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 42.7).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 66.5 |
| Governance | 11.4 |
| Contract Governance | 11.4 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 28.6 |
| Commercial Clarity | 40.8 |
| Access Clarity | 40.8 |

## Agent readiness — 32.9 (agent-aware)

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

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (3)

- **AssemblyAI LeMUR API** — LeMUR related operations
- **AssemblyAI Streaming API** — Streaming Speech-to-Text
- **AssemblyAI Transcript API** — Transcript related operations

## Agentic access (1)

- **Assemblyai Agentic Access** — 16 operations · 9 acting

## Security (2)

- **Assemblyai Domain Security** — TLSv1.3 · HSTS · DMARC
- **Assemblyai Trust Center** — SOC 2, PCI DSS, GDPR

## Plans (1)

- **Assemblyai Plans Pricing**

## Use cases (5)

- **Call Center Analytics** — Customer service teams transcribe and analyze customer calls for quality assurance, compliance, agent coaching, and sentiment analysis.
- **Meeting Intelligence** — Enterprises transcribe virtual meetings (Zoom, Teams, Meet) to generate summaries, action items, and searchable archives.
- **Podcast Processing** — Podcast producers transcribe episodes for SEO, accessibility, show notes, and content repurposing.
- **Voice Application Development** — Developers build voice-powered applications using real-time streaming transcription for voice commands, dictation, and conversation interfaces.
- **Compliance and Legal** — Legal and compliance teams transcribe depositions, hearings, and recorded communications with PII redaction and timestamped transcripts.

## Tags

Artificial Intelligence, Audio, Speech, Transcription, Speech-to-Text

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