An AI feature is roughly half model prompts and half boring backend work: auth, rate limits, queues, webhooks, and cost control. That is why the stack question — Node/Express, Python, or Go for an AI backend in 2026 — comes up on day one.

Short answer up front: Python for heavy AI/RAG experimentation , Node when your product is already JavaScript/TypeScript , Go when you need ultra-efficient service glue at scale — not as your first LangChain tutorial language.

I am Vishvajeet Shukla, a full-stack developer working across Next.js, Node, and AI integrations.…