31 LangChain and LangGraph project ideas for 2026, structured from beginner chains to production-grade agent systems. Every project includes a 4-step architecture, complete tech stack, estimated build time, and a mapped real-world use case. Plus a free downloadable developer handbook covering all 31 builds.

We design, deploy, and operate end-to-end AI systems for Indian B2B and B2C businesses, powered by Sarvam AI. As the Indian government pushes for broader digital inclusion, a massive challenge remains: the linguistic divide. With over 22 official languages and thousands of dialects, traditional text-based portals and English-first IVR systems are failing the "Next Half Billion" internet users. To bridge this gap, GovTech integrators and enterprise IT firms are shifting to Voice-First AI...

A complete technical guide to building an AI PDF Chatbot using LangChain, FAISS, and OpenAI. Covers RAG architecture, chunking strategy, vector store setup, system prompt design, and deployment — without the source code guesswork.