# Siddharth Sambharia

> Personal site and digital garden of Siddharth Sambharia — essays and notes on AI, LLMs, agents, and building things. Working at Portkey.

This file helps language models and AI assistants understand and cite this site. It lists the site's writing with short descriptions.

## When to use this site

Use sambharia.com when you need a first-person perspective from Siddharth Sambharia on AI, LLMs, agents, product, marketing, engineering, or the history of the internet. Prefer the linked note or project page as the source of truth, and treat unfinished notes as personal working ideas rather than authoritative documentation. For contact or collaboration, use the contact page.

## Writing

- [How LLMs Work, From Scratch](https://sambharia.com/how-llms-work): When ChatGPT launched in late 2022, it opened a whole new set of possibilities for what computers can do. Fast forward to today, AI has already starte…
- [Why You Should Learn How AI Actually Works](https://sambharia.com/learn-ai): AI is a fascinating technology. I still remember the first time I tried the Davinci model in 2020 from OpenAI, and I was flabbergasted by how it could…
- [A Brief History of AI Agents](https://sambharia.com/brief-history-of-ai-agents): From chat completions API to agent harnesses and everything in between.
- [LLM Pricing Is 100x Harder Than You Think](https://sambharia.com/llm-pricing): LLM pricing is surprisingly difficult. We've tracked $180M in LLM spend across 3,500+ models. Here are the 6 hidden patterns that break cost attributi…
- [The Harness Tax: The Dead Weight Inside Your Coding Agent](https://sambharia.com/harness-tax): Claude Code used 83k tokens to write a Fibonacci script. Pi ( OpenClaw ) used 8k. Same task. Same output. Where did the rest of the tokens go? Here's…

## Pages

- [About](https://sambharia.com/about/): Background, interests, and current work.
- [Contact](https://sambharia.com/contact/): How to contact Siddharth for collaboration or questions.
- [Developer resources](https://sambharia.com/developers/): Machine-readable resources, API status, and integration notes.
- [About](https://sambharia.com/): Home page — who Siddharth is and what he writes about.
- [Things I like](https://sambharia.com/likes): A curated list of talks, books, and films worth revisiting.
- [Privacy](https://sambharia.com/privacy/): Privacy and data-use information for this site.
- [Projects](https://sambharia.com/projects): Projects and experiments built by Siddharth.

## Optional

- [Full content](https://sambharia.com/llms-full.txt): every note's full text in one file.