aid: unbabel
url: https://raw.githubusercontent.com/api-evangelist/unbabel/refs/heads/main/apis.yml
name: Unbabel
kind: company
description: Unbabel is a Language Operations (LangOps) platform that combines
  always-on AI translation with on-demand human review to localize customer
  support, marketing, and other business content at scale. Its long-standing
  developer surface is the Unbabel Translation API (tapi/v2, base
  https://api.unbabel.com/tapi/v2), an asynchronous REST API where callers submit
  text with a source/target language pair, tone, and topic, then retrieve the
  completed AI-plus-human translation by uid or via a callback. Unbabel also
  offers a pure machine-translation path (mt_translation) and helper resources
  for language pairs, tones, topics, word count, and account details. Unbabel has
  since launched the standalone LLM-based product Widn.AI (its own RESTful API at
  widn.ai) and, following its combination with TransPerfect, its research and
  models (TowerLLM, COMET, Widn.AI) now also feed the GlobalLink platform; the
  tapi/v2 Translation API remains the documented developer surface at
  developers.unbabel.com.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Translation
- Localization
- Language Operations
- LangOps
- Machine Translation
- Human in the Loop
- AI
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.19'
apis:
- aid: unbabel:unbabel-translation-api
  name: Unbabel Translation API
  tags:
  - Translation
  - Jobs
  - Human in the Loop
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/docs/introduction
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/docs/introduction
    type: Documentation
  - url: https://developers.unbabel.com/reference/translation-list-update
    type: APIReference
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  - url: collections/unbabel.postman_collection.json
    type: PostmanCollection
  - url: collections/unbabel.opencollection.json
    type: OpenCollection
  description: Asynchronously submit text for AI-plus-human translation and manage
    the resulting translation jobs. Create a translation with a source/target
    language pair, tone, topic, and optional callback URL, then list jobs by
    status or retrieve a specific job by uid to read the completed translated
    text, price, and status.
- aid: unbabel:unbabel-machine-translation-api
  name: Unbabel Machine Translation API
  tags:
  - Machine Translation
  - MT
  - AI
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/docs/introduction
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/docs/introduction
    type: Documentation
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  description: Request pure machine translation (no human review) via the
    mt_translation resource, list MT jobs by status, retrieve a specific MT job by
    uid, and optionally upgrade a machine translation to a full human-reviewed
    translation.
- aid: unbabel:unbabel-language-pairs-api
  name: Unbabel Language Pairs API
  tags:
  - Language Pairs
  - Languages
  - Metadata
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/reference/language-pair
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/reference/language-pair
    type: APIReference
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  description: List the source-to-target language pairs Unbabel can translate,
    optionally filtered by a set of training languages. Used to validate a
    requested language combination before submitting a translation.
- aid: unbabel:unbabel-tone-topic-api
  name: Unbabel Tone and Topic API
  tags:
  - Tone
  - Topic
  - Metadata
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/reference/tone
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/reference/tone
    type: APIReference
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  description: List the tones (for example formal or friendly) and topics/domains
    available for a translation, so callers can steer register and subject-matter
    context when submitting text.
- aid: unbabel:unbabel-word-count-api
  name: Unbabel Word Count API
  tags:
  - Word Count
  - Pricing
  - Utility
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/reference/word-count
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/reference/word-count
    type: APIReference
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  description: Calculate the billable word count for a block of text before
    submitting it for translation, letting callers estimate cost and volume
    against their plan.
- aid: unbabel:unbabel-account-api
  name: Unbabel Account API
  tags:
  - Account
  - Customer
  - Balance
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/reference/account
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/reference/account
    type: APIReference
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  description: Retrieve the authenticated customer account's information, including
    identity and balance/usage details, for the API credentials in use.
- aid: unbabel:unbabel-notifications-api
  name: Unbabel Notifications API
  tags:
  - Webhooks
  - Callbacks
  - Notifications
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.unbabel.com/docs/introduction
  baseURL: https://api.unbabel.com/tapi/v2
  properties:
  - url: https://developers.unbabel.com/docs/introduction
    type: Documentation
  - url: openapi/unbabel-openapi.yml
    type: OpenAPI
  description: Because translation is asynchronous, callers can supply a
    callback_url when creating a translation and Unbabel will POST a notification
    to that HTTP endpoint when the job changes status (for example completed).
    This is a server-to-endpoint webhook callback, not a WebSocket; the exact
    payload shape is modeled from the documented callback behavior.
common:
- type: TrustCenter
  url: security/unbabel-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/unbabel-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/unbabel-domain-security.yml
- type: Authentication
  url: authentication/unbabel-authentication.yml
- type: GitHubOrganization
  url: https://github.com/Unbabel
- type: LinkedIn
  url: https://www.linkedin.com/company/unbabel
- type: Website
  url: https://unbabel.com
- type: Documentation
  url: https://developers.unbabel.com
- type: Plans
  url: plans/unbabel-plans-pricing.yml
- type: RateLimits
  url: rate-limits/unbabel-rate-limits.yml
- type: FinOps
  url: finops/unbabel-finops.yml
- url: https://unbabel.com/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com