I will build a custom rag retrieval augmented generation system for your data

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LeeYanbin

About this gig

YOUR DATA + AI = A KNOWLEDGE SYSTEM THAT ACTUALLY UNDERSTANDS

Generic ChatGPT doesn't know your internal documents, product manuals,

or proprietary research. RAG (Retrieval-Augmented Generation) bridges

this gap letting AI answer questions based on YOUR data.


WHAT I BUILD:

  • Document ingestion pipeline (PDFs, Word, websites, databases, APIs)
  • Smart chunking and embedding strategy optimized for your content type
  • Hybrid search (semantic + keyword) for maximum accuracy
  • Citation-grounded answers every response shows its source
  • Customizable UI (chat interface, API endpoint, or Slack/Teams bot)
  • Handles 100,000+ documents with sub-second search


TECH STACK:

LangChain LlamaIndex ChromaDB Pinecone Qdrant Weaviate

DeepSeek OpenAI Qwen FastAPI Streamlit Next.js


WHY ME?

  • Built RAG systems for legal, medical, e-commerce, and education
  • Optimize for accuracy I measure and improve retrieval precision
  • Cost-efficient I use DeepSeek embeddings (95% cheaper than OpenAI)
  • Full documentation included your team can maintain it


️IMPORTANT: RAG projects vary significantly in scope. The prices above are

starting points. Message me with your document volume and use case for an

accurate quote before ordering.

Get to know LeeYanbin

LeeYanbin

Turning AI into business results

5.0(14)
  • FromChina
  • Member sinceJan 2013
  • Avg. response time2 hours
  • Last delivery3 weeks
  • Languages

    English, Chinese
I build AI systems that actually work — not demos, real solutions. I specialize in enterprise AI deployment: API integration, RAG systems, AI chatbots, and intelligent document processing. What sets me apart: I work with OpenAI and Claude, plus DeepSeek and Qwen — giving you enterprise AI at a fraction of the cost. Services: AI API Integration RAG Systems AI Chatbots (incl. Shopify) Document AI ChatGPT Workflows Content Moderation Model Deployment (DeepSeek/Qwen) I build AI that fits your business. Let's work.

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