Frontend Layer

Routes user requests · Next.js · Streamlit · Vercel

The $0 AI Architecture Stack · 2026

What is the Frontend Layer?

The Frontend Layer is the entry point of the stack: it captures user input and routes every request to the agent orchestrator. For full product UIs you use Next.js deployed on Vercel; for fast data apps and AI demos, Streamlit lets you ship an interactive UI in pure Python with no frontend code.

Tools in this Layer

🟢 Next.js

Production React framework with Server Actions, streaming, and Edge routing — ideal for AI products.

🎈 Streamlit

Build interactive AI UIs in pure Python. Perfect for MVPs, internal tools, and demos.

▲ Vercel

Free-tier hosting with automatic deploys and a global CDN for Next.js apps.

Cost

$0 / free tier

Streamlit Community Cloud and Vercel Hobby are both free.

Explore the Full $0 AI Stack

1 Frontend Layer 2 Agent Orchestrator 3 RAG Pipeline 4 LLM Layer 5 Tool Use via MCP 6 Code Agent 7 Data Layer 8 Deployment Layer