Solution Architect, 🇮🇳

Systems thinking,
written down.

I'm Abhishek Saha. I build distributed systems and enterprise platforms by day, and write about AI, architecture, and the plumbing behind the demos by night.

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Embeddings and Vector Search, Step by Step: Finding Duplicate Suppliers
AI / ML ·

Part 2 — Enterprise Master Data Cleaning

Embeddings and Vector Search, Step by Step: Finding Duplicate Suppliers

Learn embeddings, distance, vector databases, semantic search and a mini RAG one step at a time, by finding duplicate suppliers in a small dataset.

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Enterprise Master Data Cleaning: The Business Case for SAP Supplier Data
AI / ML ·

Part 1 — Enterprise Master Data Cleaning

Enterprise Master Data Cleaning: The Business Case for SAP Supplier Data

Why dirty vendor master data quietly costs enterprises millions, how AI helps, and the operating model that makes it safe. Part 1 of the series, for business and leadership.

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How Do You Know AI Is Actually Working?
AI / ML ·

Part 15 — AI Demystified

How Do You Know AI Is Actually Working?

Demos always look good. Production AI degrades silently. Here's the evaluation framework — from exact match to human review — and how to catch hallucinations.

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Latency, Tokens, and Cost — The Physics of AI Products
AI / ML ·

Part 14 — AI Demystified

Latency, Tokens, and Cost — The Physics of AI Products

Why is AI slow? Why does it cost money? What does streaming actually change? The mechanics of inference, visualized.

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Do You Really Need GPT-4?
AI / ML ·

Part 13 — AI Demystified

Do You Really Need GPT-4?

Frontier models are impressive — and often the wrong choice. Here's the model selection map: cost, capability, latency, and when local wins.

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How AI Reasons (And Why It Sometimes Breaks)
AI / ML ·

Part 8 — AI Demystified

How AI Reasons (And Why It Sometimes Breaks)

o1, o3, DeepSeek-R1 — reasoning models behave differently. What chain-of-thought actually is, what 'thinking longer' means, and where it still fails.

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