A complete web application is needed that lets end-users interact seamlessly with large language models (LLMs). The task covers everything from designing the data model and REST/GraphQL APIs to crafting a fast, responsive frontend UI and wiring the two together. Here’s what the build involves: • Backend: set up the server (Python + FastAPI, Node + TypeScript, or a comparable cloud-ready stack), handle authentication, rate limiting, analytics hooks, and write clean, test-covered code. • LLM integration: connect to the chosen model via API or self-hosted weights, manage prompt templates, streaming responses, caching, and error handling. • Frontend: create a modern single-page interface (React, Next.js, Vue, etc.) with real-time updates, polished UX, and mobile-responsive design. • Deployment & docs: push to a staging URL, automate CI/CD, and deliver concise setup instructions so the project can be replicated in any standard cloud environment. Timeline is one month from kickoff, and I will supply wireframes, brand guidelines, and model access keys on day one. To be considered, simply share a link—or two—showing past work that highlights full-stack development or previous LLM integrations; no detailed proposals are necessary at this stage. Daily feedback windows and quick decision cycles will keep the build moving smoothly.