Prompt Engineering vs RAG vs Fine-Tuning

Venn Diagrams · made in Skemio

Venn diagram comparing Prompt Engineering, RAG, and Fine-Tuning with intersections showing Grounded Context, Tailored Outputs, and Specialized Task agents.

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What it shows

Prompting is zero-infra: test fast, tweak context, zero weight changes.
RAG pulls live proprietary data into prompt context dynamically.
Fine-tuning adapts tone, style, and syntax by permanently updating weights.

The takeaway

Prompt first for baseline behavior, add RAG for live data, fine-tune for custom syntax or style.

#AI
#LLMs
#SoftwareArchitecture
#MachineLearning
#SystemDesign
#RAG

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