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Week 33 : AI Knowledge Sharing Post

August 13, 2025

Understanding LLMs & Building Your Own

πŸš€ What is an LLM?
A Large Language Model (LLM) is an AI system trained on massive text datasets to understand and generate human-like language. Examples include GPT-4, Claude, Gemini, and LLaMA. They power chatbots, summarization tools, coding assistants, and more.


How does an LLM work?

  1. Training Phase – The model learns language patterns from billions of sentences.
  2. Fine-Tuning – Adjusting for specific tasks or industries.
  3. Prompting – Providing inputs (questions/commands) to get useful outputs.

Using ChatGPT to Create Your Own LLM

You don’t always need to train a model from scratch (which can cost millions πŸ’Έ).
Instead, you can:

  • Leverage ChatGPT + APIs to build prototypes.
  • Fine-tune existing open-source models like LLaMA 2, Mistral, or Falcon on your domain-specific data.
  • Use LangChain or LlamaIndex to connect your LLM with private documents.
  • Host your model using Hugging Face Spaces or OpenAI fine-tuning endpoints.

πŸ’‘ Example:

  • Gather your industry-specific FAQs
  • Use ChatGPT to reformat and clean data
  • Fine-tune an open-source model with that data
  • Deploy it via API for internal or customer use

Where to Start Learning LLMs (Free Video Resources)

πŸŽ₯ Beginner Level

πŸŽ₯ Intermediate Level

πŸŽ₯ Advanced Level


πŸ”‘ Takeaway:
You don’t have to be OpenAI to build something powerful β€” combining existing LLMs + your data can give you a custom AI assistant in weeks, not years.


#AI #LLM #MachineLearning #ChatGPT #GenerativeAI #LangChain #FineTuning #AIForBusiness #HuggingFace #BoopeshVikram #www.boopeshvikram.com

Posted in Weekly AI Knowledge Sharing
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