A React and Next.js UI Toolkit for LLMs
Hey HN, I wanted to share a UI toolkit project I’ve been working on recently, born out of how difficult I found it to build a great UX on top of LLMs, and keep application state in sync. I’ve built: - A React/JS front-end library for conversational interfaces, which makes it super easy to bootstrap AI assistants and ChatGPT style UX: https://github.com/nlkitai/nlux - A set of adapters that simplify integration with AI backends such as LangServe and HuggingFace The library is highly configurable, easy to theme, supports markdown streaming (that was tough to get…
In plain words
This React and Next.js UI toolkit helps developers build conversational interfaces and AI assistants. It provides a front-end library for chat-based UX and adapters for connecting to AI backends like LangServe and HuggingFace. The toolkit supports markdown streaming, custom component rendering, and theming, working with React, Next.js, and plain JavaScript. It's designed with modular architecture and zero dependencies.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey HN, I wanted to share a UI toolkit project I’ve been working on recently, born out of how difficult I found it to build a great UX on top of LLMs, and keep application state in sync. I’ve built: - A React/JS front-end library for conversational interfaces, which makes it super easy to bootstrap AI assistants and ChatGPT style UX: https://github.com/nlkitai/nlux - A set of adapters that simplify integration with AI backends such as LangServe and HuggingFace The library is highly configurable, easy to theme, supports markdown streaming (that was tough to get right!), custom rendering for AI response components, and it works smoothly with Next.js, React JS (of course), and even plain JavaScript (for the Vue.js folks out there ;). I built it with an architecture I’d love myself as a dev: high code modularity, zero dependencies, wide unit test coverage, and lots of documentation and examples. You can play with codesandbox previews and demos here: https://docs.nlkit.com/nlux Thanks for reading. It feels like we’re at a new frontier building with LLMs, and I’d love to hear what challenges you’ve had on integrating with them & building great UI & UX.
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