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Language Service pricing

Add natural language capabilities with a single API call

Industry leading language capabilities that enable you to build conversational interfaces into application, identify key terms and phrases, understand sentiments and many others. Annotate, train, evaluate and deploy customisable models in Language Studio without machine learning expertise.
Text analytics for health uses natural language processing to find and label information in unstructured clinical documents.

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Prices are estimates only and are not intended as actual price quotes. Actual pricing may vary depending on the type of agreement entered with Microsoft, date of purchase, and the currency exchange rate. Prices are calculated based on US dollars and converted using Thomson Reuters benchmark rates refreshed on the first day of each calendar month. Sign in to the Azure pricing calculator to see pricing based on your current program/offer with Microsoft. Contact an Azure sales specialist for more information on pricing or to request a price quote. See frequently asked questions about Azure pricing.

Language service can be purchased in tiers.

Text Records correspond to the number of 1,000-character units within a document that is provided as input to a Language service request.

Instance Features Price
Free - Web/Container Sentiment analysis (and opinion mining)
Key phrase extraction
Language detection
Named entity recognition (not available in container)
5,000 text records free per month
Standard - Web/Container Sentiment analysis (and opinion mining)
Key phrase extraction
Language detection
Named entity recognition (not available in container)
0-5,00,000 text records — $- per 1,000 text records
0.5M-2.5M text records — $- per 1,000 text records
2.5M-10.0M text records — $- per 1,000 text records
10M+ text records — $- per 1,000 text records
Text analytics for health $- per 1,000 text records
Question answering*
Custom text classification (Preview) Free**
Custom named entity recognition (Preview) Free**
Extractive summarisation (Preview) Free
Conversational language understanding (Preview) Free

*Some features such as custom Question Answering require dependent resources. When you choose custom Question Answering, an Azure Cognitive Search resources will also be deployed in your subscription.

**Question answering, custom test classification and custom entity recognition to be charged starting on 2/12/2021.

Commitment Tiers

This pricing is limited access. Apply here.

Instance Features Price (per month) Overage
Azure – standard Sentiment analysis (and opinion mining) Key phrase extraction Language detection Named entity recognition $- per 1M text records
$- per 3M text records
$- per 10M text records
$- per 1,000 text records
$- per 1,000 text records
$- per 1,000 text records
Connected container – standard Sentiment analysis (and opinion mining) Key phrase extraction Language detection $- per 1M text records
$- per 3M text records
$- per 10M text records
$- per 1,000 text records
$- per 1,000 text records
$- per 1,000 text records

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Additional resources

Language Service details

Learn more about Language Service features and capabilities.

Pricing calculator

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Documentation

Review technical tutorials, videos and more Language Service resources.

  • In the S tier, the service is billed for only the amount of Text Records submitted to the service.
  • A text record in the S tier contains up to 1,000 characters as measured by StringInfo.LengthInTextElements. If an input document into the Language API is more than 1,000 characters, it counts as one text record for each unit of 1,000 characters. For instance, if an input document sent to the API contains 7,500 characters, it would count as 8 text records. If an input document sent to the API contains 500 characters, it would count as 1 text record. If two documents are submitted, one document of 500 characters and one document of 1,200 characters, then the service would be billed for three text records in total: one record for the 500 character document and two text records for the 1,200 character document. You can check your text records usage in your Text Analytics resource in Azure portal under Monitoring > Metrics > Processed Text Records.
  • Usage is throttled if the transaction limit is reached on the Free tier. Customers cannot accrue overages on the free tier.
  • Let us say an API call performs both sentiment analysis and key-phrase extraction on 1,000 documents, that will count for 2,000 transactions (2 × 1,000 documents). The maximum size of a single document is 5,120 characters as measured by StringInfo.LengthInTextElements. If a document has more than 5,120 chars then we do not process that specific document and show invalid document as the error. If a request has multiple documents, then we process all documents which are less than 5,120 characters. S0-S4 tiers have been deprecated. Guide on how to migrate.
  • Standard pricing (S instance) is text records-based pricing and enables you to use the latest capabilities of Text analytics. It is more cost-effective vs using transactions-based pricing. S0-S4 pricing tiers are now deprecated and you are encouraged to switch to S tier. Guide on how to migrate
  • Conversational Language Understanding is free of charge during public preview. If you use the orchestration API and it calls classic LUIS or custom question answering, you will still get them for free with limited transactions until GA.

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