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Cognitive Services Pricing – Content Moderator API

Use intelligence APIs to enable vision, speech, language and knowledge capabilities

Content moderator enhances your ability to detect potentially offensive or unwanted images through machine-learning based classifiers, customised blacklists and optical character recognition (OCR). It helps you detect potential profanity in more than 100 languages and match text against your customised lists automatically. Content Moderator also checks for possible personally identifiable information (PII). Each Text API call can contain up to 1,024 characters each. Scan images (minimum 128 pixels, maximum 4 MB size) for adult and racy content, optical character recognition (OCR) and face detection. You can also match against customised image lists. Each API call is a transaction.

Pricing details

Customers can send up to 10 transactions per second.

Tier Price
0 - 1,000,000 transactions $- per 1,000 transactions
1,000,000 - 5,000,000 transactions $- per 1,000 transactions
5,000,000 - 10,000,000 transactions $- per 1,000 transactions
10,000,000 - 20,000,000 transactions $- per 1,000 transactions

The Content Moderator API will have a monthly transaction limit of 20,000,000 transactions per month. For higher transactions count, please contact us.

Support and SLA

  • Free billing and subscription management support are included.
  • We guarantee that Cognitive Services running in the standard tier will be available at least 99.9 per cent of the time. No SLA is provided for the free tier. Read the SLA


Content moderator

  • When using the API, images need to have a minimum of 128 pixels and a maximum file size of 4 MB. Text can be at most 1024 characters long.

  • The text API will return an error code that informs that the text is longer than permitted. The image API will also return an error code that informs that the image does not meet the size requirements.

  • Human review tool is included in your subscription.


  • The Emotion API, Face API, Language Understanding Intelligent Service API, Bing Speech-to-Text API and Bing Text-to-Speech API are billed per 1,000 API transaction calls when a production API call is being actively executed. Billing is prorated for production API transaction call quantities.

    The Bing Long Form Speech API service is billed per hour of speech that is analysed. The billing is pro-rated on a per-minute basis.

    The Recommendations API and Text Analytics API can be purchased in units of the standard tiers at a fixed price. Each unit of a tier comes with included quantities of API transactions. If the user exceeds the included quantities, overages are charged at the rate specified in the pricing table above. These overages are pro-rated, and the service is billed on a monthly basis. The included quantities in a tier are reset each month.

  • Usage is throttled if the transaction limit is reached on the free tier. Customers can’t accrue overages on the free tier.

  • Any annotation to a document counts as a transaction. Batch scoring calls will also take into consideration the number of documents that need to be scored in that transaction. So for instance, if 1,000 documents are sent for sentiment analysis in a single API call, that will count for 1,000 transactions. If an API supports more than one annotation operation, that will also be considered. Let’s say an API call performs both sentiment analysis and key-phrase extraction on 1,000 documents, that will count for 2,000 transactions (2 annotations × 1,000 documents).

  • If the usage on a standard tier is exceeded, the account starts to accrue overages. These overages are billed on a monthly basis and are calculated at the rate specified for each tier.

  • You may upgrade to a higher tier at any time. The billing rate and included quantities corresponding to the higher tier will begin immediately.


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