NLWeb is Microsoft's project to bring more chatbots to web pages

As part of an effort to make building AI-powered chatbots on the web simpler, Microsoft is launching an open project called NLWeb. Announced at Build 2025, NLWeb lets websites provide a "conversational interface" — i.e. a text field and a submission button — for their users with a few lines of code, the AI model of their choice, and their own data. A retailer could use NLWeb to create a chatbot that helps users choose clothing for specific trips, for example, while a cooking site could use it to