Posts - Perivitta Rajendran

How Retrieval-Augmented Generation (RAG) Works

A Practical Guide to RAG for Modern AI Systems

Posted by Perivitta on February 19, 2026 · 14 mins read

What is an AI Agent?

A Beginner’s Guide to LLM Agents

Posted by Perivitta on February 18, 2026 · 22 mins read

Navigating the 3 Critical Hurdles of Multimodal AI Agent Deployment

Token cost, latency, and accuracy trade-offs explained using a real-world calorie counting chatbot example

Posted by Perivitta on February 17, 2026 · 25 mins read

Multimodal AI and Grounding Challenges

Why vision-language models still hallucinate, misunderstand images, and struggle to connect perception with reality

Posted by Perivitta on February 16, 2026 · 25 mins read

Context Window Limits: Why Your LLM Still Hallucinates

Understanding token limits, retrieval failures, and why bigger context windows don’t automatically mean better answers

Posted by Perivitta on February 13, 2026 · 26 mins read

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