Rev AI

Rev AI is a speech recognition and transcription API platform from Rev.com that delivers high-accuracy AI-powered speech-to-text for pre-recorded audio and real-time streaming. The platform supports asynchronous batch transcription, real-time streaming via WebSocket, topic extraction, sentiment analysis, language identification, forced alignment, and custom vocabulary to improve accuracy. Rev AI uses Bearer token authentication and offers pay-as-you-go pricing starting at $0.10/hour for Reverb Turbo transcription, plus a free tier of 5 hours of credits for new accounts. Official SDKs are available for Python, Node.js, and Java through the revdotcom GitHub organization.

Rev AI is listed with 7 APIs on the APIs.io network. Tagged areas include Speech Recognition, Speech-to-Text, Transcription, Audio, and Natural Language Processing.

The Rev AI catalog on APIs.io includes 1 JSON-LD context.

Rev AI’s developer surface includes documentation, engineering blog, pricing, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

19.9/100 emerging ▬ flat Agent 1/100 human only Front door AI 3/6 light Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

7 APIs

Speech Recognition Speech-to-Text Transcription Audio Natural Language Processing Streaming Real-Time Sentiment Analysis Topic ExtractionLanguage IdentificationVoice

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 19.9/100 · emerging

Contract Quality 2.3 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 4.3 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.0 / 10

Discoverability 6.1 / 9

Regulatory Posture 1.5 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 10.7 — up to +22.3 composite points Ask about this →
Developer Ergonomics scores 11.9 — up to +17.6 composite points Ask about this →
Access Clarity scores 25.5 — up to +14.9 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/rev-ai/apis.yml: open an issue on github.com/api-evangelist/rev-ai to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
APIs.guru OpenAPI Directory (API definition directory)	standard	19.7 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 7

Individual APIs this provider publishes, each with its own machine-readable definition.

Rev AI Asynchronous Speech-to-Text API

Batch transcription API for pre-recorded audio files supporting uploads up to 2 GB (multipart) or 5 TB (source URL), with results typically available within 15 minutes.

Rev AI Streaming Speech-to-Text API

Real-time speech transcription via WebSocket connections supporting up to 10 concurrent streams with a 3-hour time limit per stream.

Rev AI Topic Extraction API

Extracts key topics and insights from transcripts generated by the Rev AI speech-to-text pipeline.

Rev AI Sentiment Analysis API

Provides sentiment insights for transcripts, priced at $0.0008 per 10 words analyzed.

Rev AI Language Identification API

Detects the spoken language of audio input, priced at $0.003 per minute.

Rev AI Forced Alignment API

Aligns existing transcripts with audio for precise word-level timestamps, priced at $0.003 per minute.

Rev AI Custom Vocabulary API

Allows submission of custom vocabulary lists to improve transcription accuracy for domain-specific terminology.

Scroll for all 7

Rev AI API pricing

Not yet checked against Rev AI's own pricing page. Compiled by API Evangelist on 2026-06-12; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free Tier free	—
Pay-As-You-Go metered	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Asynchronous API Submission Rate: 10000
Asynchronous API Processing Rate: 500
Multipart Upload File Size: 2

Compiled by API Evangelist, not yet checked against Rev AI's documentation. All 10 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Rev AI Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rev AI Rate Limits

10 limits

RATE LIMITS

Compliance 1

Attestations the provider states (SOC 2, ISO 27001 and others), quoted from its own trust page. APIs.io verifies none of them.

Rev AI

6 quoted statements, read from Rev AI's own page on 2026-11-10.

COMPLIANCE

FinOps 1

Cost, billing, and metering signals for API financial operations.

Rev AI Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Rev Ai Context

0 classes · 36 properties

JSON-LD

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Rev AI Domain Security

TLSv1.3 · DMARC

SECURITY

Rev AI Trust Center

SOC 2, HIPAA, GDPR

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLDContext

JSONLDContext

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

BlogFeed

BlogFeed

Other 1

Properties that don't map to a standard resource type

Attestations

Attestations

Source (apis.yml)

aid: rev-ai
name: Rev AI
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/rev-ai.png
url: https://raw.githubusercontent.com/api-evangelist/rev-ai/refs/heads/main/apis.yml
created: 2026-06-12
modified: 2026-06-12
specificationVersion: '0.23'
description: 'Rev AI is a speech recognition and transcription API platform from Rev.com that delivers high-accuracy AI-powered
  speech-to-text for pre-recorded audio and real-time streaming. The platform supports asynchronous batch transcription, real-time
  streaming via WebSocket, topic extraction, sentiment analysis, language identification, forced alignment, and custom vocabulary
  to improve accuracy. Rev AI uses Bearer token authentication and offers pay-as-you-go pricing starting at $0.10/hour for
  Reverb Turbo transcription, plus a free tier of 5 hours of credits for new accounts. Official SDKs are available for Python,
  Node.js, and Java through the revdotcom GitHub organization.

  '
x-docs-platform: redocly
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
tags:
- Speech Recognition
- Speech-to-Text
- Transcription
- Audio
- Natural Language Processing
- Streaming
- Real-Time
- Sentiment Analysis
- Topic Extraction
- Language Identification
- Voice
apis:
- name: Rev AI Asynchronous Speech-to-Text API
  description: Batch transcription API for pre-recorded audio files supporting uploads up to 2 GB (multipart) or 5 TB (source
    URL), with results typically available within 15 minutes.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/asynchronous/get-started
  baseURL: https://api.rev.ai/speechtotext/v1
  tags:
  - Transcription
  - Asynchronous
  - Batch
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/asynchronous/get-started
- name: Rev AI Streaming Speech-to-Text API
  description: Real-time speech transcription via WebSocket connections supporting up to 10 concurrent streams with a 3-hour
    time limit per stream.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/streaming
  baseURL: wss://api.rev.ai/speechtotext/v1/stream
  tags:
  - Streaming
  - Real-Time
  - WebSocket
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/streaming
- name: Rev AI Topic Extraction API
  description: Extracts key topics and insights from transcripts generated by the Rev AI speech-to-text pipeline.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/topic-extraction
  baseURL: https://api.rev.ai/topic_extraction/v1
  tags:
  - Topic Extraction
  - Natural Language Processing
  - Analytics
  tags_raw:
  - Topic Extraction
  - NLP
  - Analytics
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/topic-extraction
- name: Rev AI Sentiment Analysis API
  description: Provides sentiment insights for transcripts, priced at $0.0008 per 10 words analyzed.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/sentiment-analysis
  baseURL: https://api.rev.ai/sentiment_analysis/v1
  tags:
  - Sentiment Analysis
  - Natural Language Processing
  - Analytics
  tags_raw:
  - Sentiment Analysis
  - NLP
  - Analytics
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/sentiment-analysis
- name: Rev AI Language Identification API
  description: Detects the spoken language of audio input, priced at $0.003 per minute.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/language-identification
  baseURL: https://api.rev.ai/languageid/v1
  tags:
  - Language Identification
  - Natural Language Processing
  tags_raw:
  - Language Identification
  - NLP
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/language-identification
- name: Rev AI Forced Alignment API
  description: Aligns existing transcripts with audio for precise word-level timestamps, priced at $0.003 per minute.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/forced-alignment
  baseURL: https://api.rev.ai/alignment/v1
  tags:
  - Forced Alignment
  - Audio
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/forced-alignment
- name: Rev AI Custom Vocabulary API
  description: Allows submission of custom vocabulary lists to improve transcription accuracy for domain-specific terminology.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rev.ai/api/custom-vocabulary
  baseURL: https://api.rev.ai/speechtotext/v1/vocabularies
  tags:
  - Custom Vocabulary
  - Transcription
  properties:
  - type: Documentation
    url: https://docs.rev.ai/api/custom-vocabulary
common:
- type: TrustCenter
  url: security/rev-ai-trust-center.yml
- type: DomainSecurity
  url: security/rev-ai-domain-security.yml
- type: Website
  url: https://www.rev.ai/
- type: Documentation
  url: https://docs.rev.ai/
- type: GitHubOrganization
  url: https://github.com/revdotcom
- type: LinkedIn
  url: https://www.linkedin.com/company/rev-com
- type: Blog
  url: https://www.rev.com/blog
- type: Pricing
  url: https://www.rev.ai/pricing
- type: StatusPage
  url: https://status.rev.ai/
- type: Plans
  url: plans/rev-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/rev-ai-rate-limits.yml
- type: FinOps
  url: finops/rev-ai-finops.yml
- type: BlogFeed
  url: blogs/blogs.json
- type: JSONLDContext
  url: json-ld/rev-ai-context.jsonld
- type: Attestations
  url: compliance/rev-ai-compliance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Rev AI API — frequently asked questions

Does Rev AI have an API?

Yes. APIs.io lists 7 APIs from Rev AI, including Rev AI Asynchronous Speech-to-Text API, Rev AI Streaming Speech-to-Text API and Rev AI Topic Extraction API, and 4 more.

How much does the Rev AI API cost?

APIs.io lists 3 pricing plans for Rev AI, with each plan's price, limits and inclusions under Pricing on this page.

Is the Rev AI API ready for AI agents?

Rev AI has a Kin Score of 19.9 out of 100 (emerging) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-13.

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