Unbabel

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.

7 APIs 0 Features

TranslationLocalizationLanguage OperationsLangOpsMachine TranslationHuman in the LoopAI

TrustCenter

🔗

VulnerabilityDisclosure

VulnerabilityDisclosure

GitHubOrganization

Sources

opencollection: 1.0.0
info:
  name: Unbabel Translation API
  version: '2.0'
request:
  auth:
    type: apikey
    key: Authorization
    value: ApiKey {{username}}:{{apiKey}}
    in: header
items:
- info:
    name: Translation
    type: folder
  items:
  - info:
      name: List translations
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/translation/?status=delivered
      params:
      - name: status
        value: delivered
        type: query
        description: Filter jobs by status.
    docs: Lists translation jobs, optionally filtered by status.
  - info:
      name: Submit a translation
      type: http
    http:
      method: POST
      url: https://api.unbabel.com/tapi/v2/translation/
      body:
        type: json
        data: "{\n  \"text\": \"Hello, world!\",\n  \"source_language\": \"en\",\n  \"target_language\": \"pt\",\n  \"tone\"\
          : \"Friendly\",\n  \"topic\": \"General\",\n  \"callback_url\": \"https://example.com/unbabel/callback\"\n}"
    docs: Asynchronously submits text for AI-plus-human translation. Returns the job uid immediately.
  - info:
      name: Retrieve a translation
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/translation/:uid/
      params:
      - name: uid
        value: ''
        type: path
        description: The unique identifier of the translation job.
    docs: Retrieves a single translation job by its uid.
- info:
    name: Machine Translation
    type: folder
  items:
  - info:
      name: List machine translations
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/mt_translation/
    docs: Lists machine-translation jobs, optionally filtered by status.
  - info:
      name: Submit a machine translation
      type: http
    http:
      method: POST
      url: https://api.unbabel.com/tapi/v2/mt_translation/
      body:
        type: json
        data: "{\n  \"text\": \"Hello, world!\",\n  \"source_language\": \"en\",\n  \"target_language\": \"pt\"\n}"
    docs: Submits text for pure machine translation with no human review.
  - info:
      name: Retrieve a machine translation
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/mt_translation/:uid/
      params:
      - name: uid
        value: ''
        type: path
        description: The unique identifier of the machine-translation job.
    docs: Retrieves a single machine-translation job by its uid.
  - info:
      name: Upgrade a machine translation
      type: http
    http:
      method: PATCH
      url: https://api.unbabel.com/tapi/v2/mt_translation/:uid/
      params:
      - name: uid
        value: ''
        type: path
        description: The unique identifier of the machine-translation job.
      body:
        type: json
        data: '{}'
    docs: Upgrades an existing machine-translation job to a full human-reviewed translation.
- info:
    name: Metadata
    type: folder
  items:
  - info:
      name: List language pairs
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/language_pair/
    docs: Lists the supported source-to-target language pairs.
  - info:
      name: List tones
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/tone/
    docs: Lists the tones available for a translation.
  - info:
      name: List topics
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/topic/
    docs: Lists the topics/domains available for subject-matter context.
- info:
    name: Utility
    type: folder
  items:
  - info:
      name: Calculate word count
      type: http
    http:
      method: POST
      url: https://api.unbabel.com/tapi/v2/wordcount/
      body:
        type: json
        data: "{\n  \"text\": \"Hello, world!\",\n  \"text_format\": \"text\"\n}"
    docs: Calculates the billable word count for a block of text.
  - info:
      name: Retrieve account
      type: http
    http:
      method: GET
      url: https://api.unbabel.com/tapi/v2/account/
    docs: Retrieves the authenticated customer account's information and balance.
bundled: true

Unbabel

APIs

Unbabel Translation API

Unbabel Machine Translation API

Unbabel Language Pairs API

Unbabel Tone and Topic API

Unbabel Word Count API

Unbabel Account API

Unbabel Notifications API

Collections

Unbabel Translation API

Pricing Plans

Unbabel Plans Pricing

Rate Limits

Unbabel Rate Limits

FinOps

Unbabel Finops

Resources

Sources