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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 build a bot that suggests dishes to pair with a recipe. Back then, OpenAI was pitching the tech as a way for brands to bring ChatGPT-like conversational features to their websites, but the project faced several delays due to technical hurdles.

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