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From LLM to AI Agent: What's the Real Journey Behind AI System Development?


Confused by LLMs, RAG, & AI Agents? We break down the spectrum of AI system design with a familiar resume-screening example to show the leap in capabilities (and complexity) at each level.

It excels at tasks involving this stored knowledge: summarizing novels, writing essays about global warming, explaining special relativity to a 5-year-old, or composing haikus. By connecting to APIs, whether for calculators, calendars, email services, or search engines, LLMs can leverage reliable external utilities instead of relying on their internal, non-deterministic capabilities. An AI workflow can connect to the hiring portal to fetch resumes and job descriptions → Evaluate qualifications based on experience, education, and skills → Send appropriate email responses (rejection or interview invitation).

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