Is there any modern AI concept which anyone is aware of which is creating buzz or showing great potential ? I am aware about the concepts on RAG, Vector DB, Vectorless RAG, MCP.. In case if there are any different new concepts which are getting popular to build modern AI systems, please let me know. Thanks
I think a lot of beginners are focusing only on prompting right now… But after learning how modern AI systems actually work, I’ve realized Vector Databases are one of the most important concepts to understand early. Because once you understand vector databases, you start understanding: 1)RAG 2)semantic search 3)embeddings 4)AI memory systems how modern AI assistants retrieve context The biggest realization for me was this: Traditional databases search for exact matches. Vector databases search for meaning. That’s what makes modern AI applications feel intelligent. It's a very interesting concept.
This video reference should be helpful in understanding the same, in case if anyone interested in vector database, hope this will be a great starting point:
Built my own AI chatbot with RAG + Vector DB instead of just calling ChatGPT APIs… and the difference is honestly crazy.
Over the last few weeks, I wanted to understand how modern AI assistants actually work under the hood , not just prompting GPT, but building a proper retrieval pipeline.
So I built a chatbot that can:
• ingest custom documents • chunk + embed data • store embeddings in a vector database • retrieve relevant context using semantic search • generate grounded answers using RAG
What surprised me most wasn’t the chatbot itself…
It was how dramatically hallucinations reduced once retrieval was done properly.
A few things I learned while building it:
I also experimented with:
This project completely changed how I think about AI applications.
I made a full breakdown video showing the architecture + workflow + implementation process for anyone interested in building something similar.
Would love feedback from people here: What’s the biggest challenge you faced while building RAG systems?