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Language Understanding (LUIS) pricing

Teach your apps to understand commands from your users

Language Understanding (LUIS) offers a fast and effective way of adding language understanding to applications. With LUIS, you can use pre-existing, world-class, pre-built models whenever they suit your purposes. When you need specialized models, LUIS guides you through the process of quickly building them.

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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 London closing spot rates that are captured in the two business days prior to the last business day of the previous month end. If the two business days prior to the end of the month fall on a bank holiday in major markets, the rate setting day is generally the day immediately preceding the two business days. This rate applies to all transactions during the upcoming 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.

Pay-as-you-go

Instance Transactions Per Second (TPS)1 Features Price
Free2 Authoring -
Web
5 TPS Text Requests
Free2 Prediction -
Web/Container
5 TPS Text Requests
Standard -
Web/Container
50 TPS Text Requests $- per 1,000 prediction transactions*
Speech Requests $- per 1,000 prediction transactions*

1 TPS only applies to web endpoint

2 Free Tier includes only text as an input.

* Dispatch will do two text transactions per request. Each text phrase sent in an evaluation request will be charged as a transaction.

Commitment Tiers

Instance Features Price (per month) Overage
Azure - Standard Text Requests $- per 1M transactions
$- per 5M transactions
$- per 25M transactions
$- per 1,000 prediction transactions
$- per 1,000 prediction transactions
$- per 1,000 prediction transactions
Connected Container - Standard Text Requests $- per 1M transactions
$- per 5M transactions
$- per 25M transactions
$- per 1,000 prediction transactions
$- per 1,000 prediction transactions
$- per 1,000 prediction transactions

Disconnected Containers

Features Price per year Max usage per year Projected usage per month
Text Requests $- 300M transactions 25M transactions
$- 60M transactions 5M transactions

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Additional resources

Language Understanding (LUIS)

Learn more about Language Understanding (LUIS) features and capabilities.

Pricing calculator

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Documentation

Review technical tutorials, videos, and more Language Understanding (LUIS) resources.

  • For text requests, a transaction is an API call with query length up to 500 characters.

    For speech requests, a transaction is an utterance with query length up to 15 seconds long.

  • No, the free tier only includes text requests with max length 500 characters.

  • Dispatch is a feature that enables processing two models/applications with one API call.
  • Build, manage and publish your app using an authoring key while query endpoints with the prediction key. Learn more
  • Learn more about authoring and publishing regions
  • It is a batch prediction request that provides evaluation results on the published model. Learn more

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