Defined.ai (DefinedCrowd)

aid: definedcrowd
name: Defined.ai (DefinedCrowd)
description: Defined.ai (formerly DefinedCrowd) is an AI training data platform and marketplace founded in 2015 by Daniela
  Braga, headquartered in Seattle with offices in Lisbon, Porto, and Tokyo. It provides ready-to-use datasets across speech,
  text, image, video, and multimodal, plus custom data collection, annotation, machine translation, conversational AI, LLM
  fine-tuning, and data and model evaluation services sourced from a global community of 1.6M+ vetted contributors across
  150+ markets and 500+ languages, dialects, and locales. The Defined.ai Public API (v2.0) lets enterprise customers manage
  projects programmatically — create Mean Opinion Score and Pronunciation Validation projects, upload input units, configure
  supported languages, track project status and errors, manage jobs, retrieve deliverables, and subscribe to notifications.
  Data provenance and compliance are backed by ISO 27001, ISO 27701, ISO 42001, GDPR, and HIPAA.
url: https://raw.githubusercontent.com/api-evangelist/definedcrowd/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- balderton-capital
x-tier: profiled
x-tier-reason: enriched-from-public-api
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://defined.ai/favicon.ico
tags:
- Company
- AI Training Data
- Data Marketplace
- Machine Learning
- Data Annotation
- Speech Data
- Natural Language Processing
- Crowdsourcing
- Artificial Intelligence
apis:
- aid: definedcrowd:definedcrowd-deliverables-api
  name: Defined.ai (DefinedCrowd) Deliverables API
  description: The result file is created after the project is completed and is referred to as deliverables. The file contains
    contributor metadata for completed input units.
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Deliverables
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-deliverables-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-input-units-api
  name: Defined.ai (DefinedCrowd) Input Units API
  description: "Each input unit is a single component of work done by the contributors. There are several types of units –\
    \ audio, text, and image. In a given project, all units should have the same structure. The input unit schema explains\
    \ the structure of input units. \n\n Note: Input Units are a part of projects. They are not separate entities."
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Input Units
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-input-units-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-jobs-api
  name: Defined.ai (DefinedCrowd) Jobs API
  description: Jobs are how your data (input units) connects the project with our contributors. Each job has data, instructions,
    and customizable parameters, which then convert inputs to outputs. Parameters are customizable according to your project
    needs.
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-jobs-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-mean-opinion-score-api
  name: Defined.ai (DefinedCrowd) Mean Opinion Score API
  description: Aggregate ratings on the "intelligibility" and "naturalness" of utterances.
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Mean Opinion Score
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-mean-opinion-score-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-project-management-api
  name: Defined.ai (DefinedCrowd) Project Management API
  description: 'Informally, projects can be viewed as configurable packages that process sets of Input Units. The project’s
    template determines how the Input Units are processed. Projects can be retrieved and managed as needed through the following
    methods:'
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Project Management
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-project-management-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-pronunciation-validation-api
  name: Defined.ai (DefinedCrowd) Pronunciation Validation API
  description: Confirm audio meets pronunciation standards.
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Pronunciation Validation
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-pronunciation-validation-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-subscriptions-api
  name: Defined.ai (DefinedCrowd) Subscriptions API
  description: "Subscribe to automatic notifications for specific email addresses. Email notifications are sent for events\
    \ that happen during the life cycle of the project.\n\n <small> By using this service, the user fully agrees with Defined.ai's\
    \ service <a href=\"https://www.defined.ai/terms-of-use/\">Terms\nof Use</a>, and acknowledges and understands that any\
    \ processing of personal data will be carried out according to the terms of Defined.ai's <a href=\"https://www.defined.ai/privacy-policy/\"\
    >Privacy Policy</a>. The user further acknowledges that it is fully responsible for obtaining and managing all necessary\
    \ valid consents from all data subjects whose email address is being subscribed by the user, for the sole purposes of\
    \ receiving service notifications in context of Defined.ai provided services, in compliance with all applicable data protection\
    \ laws, including the EU General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA). The\
    \ user also acknowledges that it is fully responsible for unsubscribing such emails once no longer necessary for these\
    \ purposes or in case the data subject has removed its consent.\n\n Defined.ai reserves the right to proceed with the\
    \ immediate service suspension without any prior\nnotice, if it detects service abuse, non-compliance with the above obligations\
    \ or in case it receives complaints from data subjects that have not provided their consent for the subscription of their\
    \ email. </small>"
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-subscriptions-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
- aid: definedcrowd:definedcrowd-supported-languages-api
  name: Defined.ai (DefinedCrowd) Supported Languages API
  description: Several of the Workflow Templates offer the ability to set a language / country code. These configurations
    instruct Defined.ai to use our human intelligence Contributors that speak and / or reside in the specified language /
    country. The REST API provides a method called “Get Supported Languages” that returns the set of languages, language features
    and associated language codes that are used by our APIs and supported by the Defined.ai platform.
  humanURL: https://developers.definedcrowd.com/
  baseURL: https://api.production-na01.definedcrowd.com
  tags:
  - Supported Languages
  properties:
  - type: OpenAPI
    url: openapi/definedcrowd-supported-languages-api-openapi.yml
  - type: APIReference
    url: https://developers.definedcrowd.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/definedcrowd-domain-security.yml
- type: AgenticAccess
  url: agentic-access/definedcrowd-agentic-access.yml
- type: Authentication
  url: authentication/definedcrowd-authentication.yml
- type: Website
  url: https://www.definedcrowd.com/
- type: DeveloperPortal
  url: https://developers.definedcrowd.com/
- type: Documentation
  url: https://developers.definedcrowd.com/
- type: Blog
  url: https://defined.ai/blog
- type: Support
  url: https://defined.ai/contact-us
- type: TermsOfService
  url: https://defined.ai/terms-of-use
- type: PrivacyPolicy
  url: https://defined.ai/privacy-policy
- type: SignUp
  url: https://enterprise.definedcrowd.com
- type: LLMsTxt
  url: https://defined.ai/llms.txt
- type: ErrorCatalog
  url: errors/definedcrowd-problem-types.yml
- type: Conventions
  url: conventions/definedcrowd-conventions.yml
- type: DataModel
  url: data-model/definedcrowd-data-model.yml
- type: MCPServer
  url: mcp/definedcrowd-mcp.yml
- type: Overlay
  url: overlays/definedcrowd-openapi-overlay.yaml
- type: Conformance
  url: conformance/definedcrowd-conformance.yml
- type: Compliance
  url: https://defined.ai/about-us
- type: Lifecycle
  url: lifecycle/definedcrowd-lifecycle.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence