Chainlit

Building a conversational AI app is one thing — making it reliable, observable, and continuously improving is another challenge entirely. Chainlit is a framework and platform designed for developers and enterprises who need both. It provides tools for building AI systems with full observability and analytics for LLM applications, so you can see exactly what's happening inside your app and fix issues before they reach users. Chainlit supports a wide range of deployment options including standalone web apps, embedded copilots, FastAPI servers, and custom React or Slack/Discord/Teams bots. With authentication, customization, and integrations with popular LLM providers and frameworks, it's the complete toolkit for serious conversational AI development.