You have an idea for an AI product. Maybe it is a RAG-powered assistant for your industry, an AI agent that automates a workflow, or an intelligent search tool. You want to validate it before raising money or committing a full team. Here is how to go from idea to working prototype in 4 weeks with one senior developer.
Week 1: Scope ruthlessly
The biggest mistake founders make with MVPs is trying to build too much. Your MVP needs to do one thing well enough to show potential users and investors.
Define the single most important workflow. What does the user do? What does the AI do? What is the output? Write this down in one paragraph. If you cannot describe it in one paragraph, the scope is too big.
Your developer should push back on features that do not serve this core workflow. That is a sign of good product thinking, not resistance.
Week 2: Build the core AI pipeline
This is where the AI logic gets built. For most AI MVPs, this means: setting up the LLM integration (OpenAI, Anthropic, or open source), building the data pipeline (RAG with a vector database if you need retrieval), and creating the core API that the frontend will call.
Use off-the-shelf tools wherever possible. LangChain or LlamaIndex for orchestration. Pinecone or Qdrant for vector search. FastAPI for the backend. Do not build custom infrastructure for an MVP. If you need a developer who already knows these tools, you can hire an AI developer or specifically a RAG developer through Workforce Next.
Week 3: Build the interface
A simple web app that demonstrates the workflow. Next.js frontend, clean UI, real data flowing through the AI pipeline you built in week 2. This is where vibe coding shines. Let the developer use Cursor or Copilot to move fast on the frontend while keeping the AI pipeline hand-crafted.
Week 4: Polish, test, and deploy
Fix the obvious bugs. Add error handling for when the AI returns garbage (it will). Deploy to a shareable URL. Create a simple demo script. You now have something you can show to users, investors, or your team.
What this costs
At Workforce Next, our MVP Sprint is priced at 1.2 to 1.8 lakh INR ($1,500 to $2,200) for one senior developer for 4 weeks. SethAI matches a developer with actual AI product experience in your industry, using context-first matching rather than just filtering by tech stack. One-week paid trial before you commit. The developer stays with you beyond the sprint if you want them to. If you are a founder at the idea stage, this is the fastest way to get something real in front of users. Let us know what you are building and we will scope it together.