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Cognitive Service for Language 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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Apply filters to customise pricing options to your needs.

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 programme/offer with Microsoft. Contact an Azure sales specialist for more information on pricing or to request a price quote. For more information on Azure pricing see frequently asked questions.

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.

  1. Managed document free per month. Maximum file size for each document is 1 MB. Processing limit at 10 text records per second.
  2. Sentiment analysis, key phrase extraction, language detection, question answering, named entity recognition, and conversational language understanding all share 5,000 free text records per month.
  3. Please contact sales for pricing of over 10 million text records.
  4. Some features such as question answering require dependent resources. When you choose question answering, an Azure Cognitive Search resources will also be deployed in your subscription.
Instance Features Inferencing Training and model endpoint hosting
Free - Web Sentiment analysis (available in containers)
Key phrase extraction (available in containers)
Language detection (available in containers)
Customised question answering1
Prebuilt question answering
Named entity recognition,
including PII
5,000 text records free per month N/A
Conversational language understanding
Standard training: free
Advanced training: up to 1 hour free
Model endpoint hosting: free
Customised text classification
Customised named entity recognition2
Training: up to 1 hour free
Model endpoint hosting: up to 1 model free
Standard (S) - Web Sentiment analysis (available in containers)
Key phrase extraction (available in containers)
Language detection (available in containers)
Named entity recognition,
including PII
N/A
Conversational language understanding $- per 1,000 text records Standard training: free
Advanced training: $- per hour
Endpoint hosting: free
Customised text classification
Customised named entity recognition
$- per 1,000 text records Training: $- per hour
Endpoint hosting: $- per model per month
Text analytics for health (available in containers) N/A
Customised question answering
Prebuilt question answering
N/A
Documentation summarisation (Preview)
Free
N/A
Conversation summarisation (Preview)
Free
N/A
Conversation PII (Preview)
Free
N/A

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
Disconnected container Sentiment analysis (and opinion mining), Key phrase extraction, Language detection Sign up to get access
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Additional resources

Cognitive Service for Language

Learn more about Cognitive Service for Language features and capabilities.

Pricing calculator

Estimate your expected monthly costs for using any combination of Azure products.

Documentation

Review technical tutorials, videos, and more Cognitive Service for Language 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 eight text records. If an input document sent to the API contains 500 characters, it would count as one 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’s say that 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.
  • The new PII is part of the Language conversation API preview that was launched at //BUILD 2022. The new feature is designed to process call centre transcripts and chat conversations. The feature is offered free of charge until GA.

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