I will build a custom rag chatbot using langchain

S
saif9292
S
saif9292
Saifullah

About this gig

If you're tired of AI chatbots that make things up or give vague answers, that's exactly what I fix. I build chatbots that only answer from YOUR data your PDFs, documents, website, or YouTube videos using RAG (Retrieval-Augmented Generation).

Here's the short version of how it works: I break your content into chunks, turn them into embeddings, and store them in a vector database. When someone asks a question, the bot pulls only the relevant parts and answers from that nothing made up, nothing generic.

What you'll get:

  • A working chatbot built around your actual content
  • Clean chat interface, or integration into your website/Telegram/Discord
  • Fast, accurate answers no hallucinations
  • Full source code, it's yours
  • I'll keep you updated as I build, not just a delivery at the end

Tools I work with: Python, LangChain, FastAPI, FAISS/Pinecone/ChromaDB, OpenAI & Gemini APIs

Good fit if you need:

  • A support chatbot trained on your FAQs/docs
  • An internal tool for your team to search company knowledge
  • A "chat with my video" tool for your content
  • Fast Q&A over large documents

I like understanding the actual problem before I start building message me first if your use case is a bit unusual, happy to

Get to know Saifullah

Saifullah

AI ML Engineer

  • FromPakistan
  • Member sinceApr 2019
  • Avg. response time1 hour
  • Languages

    Urdu, English
I build AI systems that turn documents, videos, and websites into intelligent, accurate chatbots. Expertise: RAG (Retrieval-Augmented Generation), LangChain, NLP, and backend development. My chatbots don't hallucinate — every answer is grounded in your actual content. Services: Custom RAG chatbots (PDFs, documents, knowledge bases) YouTube video chatbots Website/FAQ support chatbots Semantic search & text classification FastAPI backend development LLM integration (OpenAI, Gemini) Clean code, clear communication, working product every time. Let's build your AI assistant.

My Portfolio