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Retrieve your OAuth 2 credentials to authenticate your API calls.

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Integrate world-class natural language understanding technology into your app.

Ambiverse Natural Language Understanding API extracts entities from unstructured text, enabling a more precise transformation of texts into actionable, measurable, and easily accessible knowledge. Entities are identified by types such as person, location, organization, or product, and linked to the Wikipedia-derived YAGO knowledge graph. You can query the knowledge graph to obtain further information about these entities, such as Wikipedia links, textual descriptions, images, and lists of relevant categories.

Plans

No commitments. Only pay for what you use. Each month we bill you at the Pay-As-You-Go rates shown below.

Free

No costs. No commitments.

up to 1k calls/mo

free

Features

Wikipedia Knowledge Graph
Reporting & Analytics: Track API Usage
Interactive API Documentation
Multilingual Language Understanding: English, Chinese, Spanish, and German

Billing

No costs. No commitments.
No credit card required.

Limits

API calls per month
API calls per minute

Activate Free Plan

Enterprise

Bring Your Own Knowledge

Features

Unlimited API Calls per Month
Wikipedia Knowledge Graph
Reporting & Analytics: Track API Usage
Interactive API Documentation
Customer Support and 99% Uptime
Multilingual language understanding: English, Chinese, Spanish, and German
Bring Your Own Knowledge Graph

Billing

Only pay for what you use.
Monthly payment by credit card.

Limits

Custom API calls per minute.
Unlimited API calls per month

We only charge calls to the Entity Linking Service. One piece of text is one call.
The maximum size of a call to the Entity Linking Service is 200KB, the maximum text length is 20,000 UTF-8 characters.
Unlimited API calls to the Knowledge Graph Service for free, with a limit of 600 API calls per minute.

Example API Call

Response

{
  "docId": "1865009165",
  "language": "en",
  "matches": [
    {
      "charLength": 2,
      "charOffset": 0,
      "text": "Ma",
      "entity": {
        "id": "http://www.wikidata.org/entity/Q1137062",
        "confidence": 0.24400826614263774
      }
    },
    {
      "charLength": 7,
      "charOffset": 11,
      "text": "Alibaba",
      "entity": {
        "id": "http://www.wikidata.org/entity/Q1359568",
        "confidence": 0.895955178187174
      }
    },
    {
      "charLength": 8,
      "charOffset": 22,
      "text": "Hangzhou",
      "entity": {
        "id": "http://www.wikidata.org/entity/Q4970",
        "confidence": 0.9229612543325116
      }
    },
    {
      "charLength": 8,
      "charOffset": 53,
      "text": "SoftBank",
      "entity": {
        "id": "http://www.wikidata.org/entity/Q201653",
        "confidence": 0.954021817469926
      }
    },
    {
      "charLength": 7,
      "charOffset": 66,
      "text": "Goldman",
      "entity": {
        "id": "http://www.wikidata.org/entity/Q193326",
        "confidence": 0.41802014708618046
      }
    }
  ],
  "entities": [
    {
      "id": "http://www.wikidata.org/entity/Q1137062",
      "name": "Jack Ma",
      "url": "http://en.wikipedia.org/wiki/Jack%20Ma",
      "type": "PERSON",
      "salience": 0.7256598749663603
    },
    {
      "id": "http://www.wikidata.org/entity/Q1359568",
      "name": "Alibaba Group",
      "url": "http://en.wikipedia.org/wiki/Alibaba%20Group",
      "type": "ORGANIZATION",
      "salience": 0.5163823048005602
    },
    {
      "id": "http://www.wikidata.org/entity/Q4970",
      "name": "Hangzhou",
      "url": "http://en.wikipedia.org/wiki/Hangzhou",
      "type": "LOCATION",
      "salience": 0.34844721607983514
    },
    {
      "id": "http://www.wikidata.org/entity/Q201653",
      "name": "SoftBank Group",
      "url": "http://en.wikipedia.org/wiki/SoftBank%20Group",
      "type": "ORGANIZATION",
      "salience": 0.15870666288011434
    },
    {
      "id": "http://www.wikidata.org/entity/Q193326",
      "name": "Goldman Sachs",
      "url": "http://en.wikipedia.org/wiki/Goldman%20Sachs",
      "type": "ORGANIZATION",
      "salience": 0.1583793877976444
    }
  ]
}