I need a coder with hands-on experience in large language models to help me stand up a basic information-retrieval chatbot. The immediate goal is a working proof-of-concept that can: • accept a user query via a simple web or CLI interface • send the prompt to a GPT-style model (OpenAI, Claude, or a comparable open-source option through LangChain or Hugging Face) • return concise, accurate answers pulled directly from the model’s knowledge base Scope for this first milestone is intentionally lean: configure the model, craft and refine the core prompts, wrap it all in a lightweight Python micro-service, and document the setup so I can run it locally. If this initial build performs well, I’ll expand the project into deeper fine-tuning, richer UI, and additional data sources. When you reply, please include: • two or three brief examples of LLM chatbots you’ve delivered • your preferred pricing structure (hourly or flat for this phase) • earliest start date and estimated turnaround for the proof-of-concept I’m ready to review proposals and move forward right away.