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AI Agents vs RAG Comparison Guide¶
Helps you decide between RAG, a fixed workflow and an AI agent for a given use case.

When to use RAG, when to use an AI agent, and how to combine them: differences, a decision tree, cost and latency, agentic RAG, evaluation and guardrails. 5 parts on 3 printable pages. Free.
- For
- AI engineers and product teams
- Level
- Intermediate
- Format
- PDF · 3 pages · light + dark
- Pages
- 3
- Language
- English
- Delivery
- Instant download after you enter your email
- Licence
- Free to share unchanged, with credit
- Support
- aiwithpriyabrat@gmail.com
Who it's for¶
For: AI engineers and product teams. Level: Intermediate.
What you get¶
| File | What it is |
|---|---|
agents-vs-rag-guide.pdf | Light version, 3 pages |
agents-vs-rag-guide-dark.pdf | Dark version, 3 pages |
Highlights
- 3-page PDF, light and dark versions
- A decision tree and 7 use cases
- Cost and latency worked out per request
What's inside¶
- Definitions, the RAG pipeline, the agent loop and 7 key differences
- A decision tree and 7 use cases: RAG, workflow or agent
- Cost and latency worked out: an agent costs about 5.6× per request
- Agentic RAG patterns, a minimal agent loop and a production architecture
- Evaluation, failure modes, guardrails, security and interview answers
Preview and sample pages¶
Real pages rendered from the PDF.
Requirements and compatibility¶
| You need | Any PDF reader — your web browser is enough |
| Works on | Desktop, tablet and phone Light version for printing, dark version for screens |
| Format | PDF · 3 pages · light + dark |
| Pages | 3 |
| Paper size | A4 |
| Language | English |
How to use it¶
- Open the PDF in any PDF reader, including your web browser.
- Print the light version on A4 paper; use the dark version on a screen.
What's included and what's not¶
Included
- agents-vs-rag-guide.pdf
- agents-vs-rag-guide-dark.pdf
Not included
- Editable source files: the download is the PDF
Licence¶
Free downloads may be downloaded, printed and shared unchanged, with credit: keep the author's name, the website link and the footer on every page. You may not sell them, include them in a paid product, or remove or change the author credit. Full wording: Terms, section 2.
Delivery and support¶
The download starts as soon as you enter your email or continue with Google.
Support: email aiwithpriyabrat@gmail.com or use the contact page. We reply within 2 working days (Monday–Friday).
FAQ¶
Is it really free?
Yes. Enter your email (or continue with Google) and the download starts straight away. No payment and no account. You'll get an occasional email about new free notes and cheat sheets; unsubscribe any time.
Which version should I download?
The light version prints well; the dark version is easier on screens. The content is the same.
Can I share it?
Yes, unchanged and with credit: keep the author's name, the website link and the footer on every page. You may not sell it or include it in a paid product.
Your next step¶
Next: Build a RAG chatbot. Chose RAG? Build one end to end, from loading documents to answers with sources.
Go further: GenAI and LLM Cheat Sheet (coming soon, ₹149 at launch). The comparison guide helps you choose an approach. The GenAI and LLM Cheat Sheet covers building either one: RAG end to end, agent patterns, frameworks, evaluation and guardrails, on 17 pages.
Related products¶
Free to start with: AI Agents notes (free)

The GenAI System Design Interview Guide
A framework, an estimation toolkit and four worked case studies for GenAI system design interviews.
Level: Advanced For: GenAI and ML engineering candidates
- 35-page PDF in 8 chapters, personalised with your name
- 4 complete case studies with model answers
- 6 timed practice problems and a mock interview

GenAI and LLM Cheat Sheet
LLMs, RAG, agents and LLMOps on 17 printable pages, with 45 interview Q&As.
Level: Intermediate For: AI engineers and interview candidates
- 17-page PDF, light and dark, personalised with your name
- 45 interview Q&As and a 64-term glossary
- Copy-ready Python for streaming, tools and retries

System Design Quick Revision Sheet
Revise a whole system design round in 15 minutes: the framework, the numbers and 26 classic problems.
Level: Intermediate For: System design interview candidates
- 13-page PDF, light and dark, personalised with your name
- 26 classic problems, one card each
- 30 interview Q&As

