What's new in Language Understanding


LUIS will be retired on October 1st 2025 and starting April 1st 2023 you will not be able to create new LUIS resources. We recommend migrating your LUIS applications to conversational language understanding to benefit from continued product support and multilingual capabilities.

Learn what's new in the service. These items include release notes, videos, blog posts, and other types of information. Bookmark this page to keep up to date with the service.

Release notes

February 2022

January 2022

December 2021

November 2021

August 2021

April 2021

January 2021

  • The V3 prediction API now supports the Bing Spellcheck API.
  • The regional portals (au.luis.ai and eu.luis.ai) have been consolidated into a single portal and URL. If you were using one of these portals, you will be automatically re-directed to luis.ai.

December 2020

  • All LUIS users are required to migrate to a LUIS authoring resource.
  • New evaluation endpoints that allow you to submit batch tests using the REST API, and get accuracy results for your intents and entities. Available starting with the v3.0-preview LUIS Endpoint.

June 2020

May 2020 - //Build

March 2020

  • TLS 1.2 is now enforced for all HTTP requests to this service. For more information, see Azure AI services security.

November 4, 2019 - Ignite

September 3, 2019

  • Azure authoring resource - migrate now.
    • 500 apps per Azure resource
    • 100 versions per app
  • Turkish support for prebuilt entities
  • Italian support for datetimeV2

July 23, 2019

  • Update the Recognizers-Text to 1.2.3
    • Age, Temperature, Dimension, and Currency recognizers in Italian.
    • Improvement in Holiday recognition in English to correctly calculate Thanksgiving-based dates.
    • Improvements in French DateTime to reduce false positives of non-Date and non-Time entities.
    • Support for calendar/school/fiscal year and acronyms in English DateRange.
    • Improved PhoneNumber recognition in Chinese and Japanese.
    • Improved support for NumberRange in English.
    • Performance improvements.

June 24, 2019

May 6, 2019 - //Build Conference

The following features were released at the Build 2019 Conference:


Bot Framework


2019 Ignite videos

Advanced Natural Language Understanding (NLU) models using LUIS and Azure AI services | BRK2188

2019 Build videos

How to use Azure Conversational AI to scale your business for the next generation

Service updates

Azure update announcements for Azure AI services