I build useful AI tools
and write clear notes for curious people.
A calm home for practical AI projects, thoughtful experiments, useful tool notes, and plain-English writing about what is changing.
Latest writing
All posts →Claude API pricing: real costs from 6 months of use
See real Claude API pricing from indie projects, token cost examples, routing tactics, and prompt caching tips to cut Anthropic API bills.
Tokens, context, and why your prompt costs more than you think
Learn what AI tokens and context windows mean, why prompts cost more than expected, and how to write cheaper, faster LLM prompts.
What is RAG? A 5-minute mental model with code
RAG explained in plain English: how retrieval augmented generation works, when to use it, common mistakes, and a simple code example.
AI for builders: a no-BS field guide
A practical AI field guide for builders covering tokens, embeddings, RAG, tool use, agents, streaming, and evals in plain English.
Cursor vs Claude Code: which I reach for in 2026
Cursor vs Claude Code compared from daily use: when to use each AI coding tool, workflow tradeoffs, and the setup worth paying…
AI notes by Krupesh
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I build small, useful AI experiments and turn the lessons into simple notes that help people understand what is worth their attention.
Krupesh Raut