Filed under Dev Tool · 2025
Microsoft Language Understanding (LUIS)
2016 - 2025, 10 years old
An Azure cloud service for adding natural language intent recognition to bots and apps.
LUIS was Microsoft's first attempt at giving developers a managed natural language understanding service, with intent and entity models trained from a web portal. Microsoft stopped allowing new LUIS resources in April 2023 and pushed customers toward Conversational Language Understanding inside Azure AI Language, citing newer transformer-based architectures. After one short extension, the LUIS portal and APIs went dark on October 31, 2025. The retirement was driven less by failure than by obsolescence: the service was designed for a pre-LLM world where developers hand-labeled hundreds of utterances per intent.
- Founded
- 2016-04
- Shut down
- 2025-10-31
- Funding raised
- Undisclosed
- Years alive
- 10
- Founders
- Microsoft