Skip Navigation

Cognitive Services pricing—Language Understanding (LUIS)

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

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 specialised models, LUIS guides you through the process of quickly building them.

Pricing details

Tier Unit Price
LUIS API—Free* Transactions 10,000 transactions free per month
LUIS API—Text Requests Transactions $- per 1,000 transactions
LUIS API—Speech Requests Transactions $- per 1,000 transactions
*Free Tier includes only text as an input.

Support & 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 percent of the time. No SLA is provided for the free tier. Read the SLA.

FAQ

LUIS

  • 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.

General

  • Bing Search APIs are invoiced based on number of transactions (also known as API calls). These plans are pay-as-you-go and doesn’t incur additional cost for complex queries and more than 10 results (up to 50 results in most cases).

  • If you happen to exceed the mentioned number of transactions per second (TPS), your usage will be throttled to be within the mentioned limit. If your application needs to have higher TPS than the ones mentioned on this page, please reach out to the Azure support team.

  • For billing purposes, a transaction is a successful Bing API call request (though there are caveats for DoS attacks). For logging and reporting purposes such as for the Bing Statistics Add-in, it is any Bing API call irrespective of whether it is successful or not.

  • You can change the tier of service anytime. Please make sure you use appropriate keys in your API calls. If you are having enterprise agreement with Microsoft, please work with your account executive.

Resources

Estimate your monthly costs for Azure services

Review Azure pricing frequently asked questions

Learn more about Cognitive Services

Review technical tutorials, videos, and more resources

Added to estimate. Press 'v' to view on calculator View on calculator

Learn and build with $200 in credit and keep going for free