Deeptanshu Jha

Product builder at the intersection of LLMs, AI, and fintech. Focused on building intelligent systems that scale responsibly and safely.

Quick Facts

Current Role Product Manager, Builder
Location Bay Area, CA
Focus AI + Billing + Growth
01

Essays

Jan 2026

Carryover: Portable state handoff for LLMs

I built a a portable work state CLI tool to easily switch between LLMs

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LLMs · Jan 2026

When Small Models Are Good Enough: A Peek into Geometry of Intelligence

Let's take a local manifold walk to understand why small models are sometimes better, more resource responsible and won't burn a hole in your pocket.

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Claude Code · Jan 2026

Claude Code Rate Limits: Diagnosing my token usage

I'm running into rate limits every hour or so into using claude code. I analyzed one session: < 3% of my AI bill went to intelligence. The rest? Regurgitating stale and bloated context

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LLM · Jan 2026

Strange Habits of LLMs: Oops I Did It Again

I was fixing a bug for my newborn's app and ChatGPT had a complete brain-body disconnect: It kept reasoning 'don't do the thing' → did it → 'oops I did this' → redo → 'oops I did it again'

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AI Systems · Jan 2026

Build Your Own Glean: A Production RAG System

Demos are easy. Production is hard. If you want internal knowledge search that actually works, you're not 'adding RAG'—you're building a pipeline where the LLM is the easiest part.

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RAG · Jan 2026

AI Evals: What I learned shipping production grade billing systems

From Evals 101 to Production Grade systems.

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Miscellaneous · Jan 2026

Rebuilding (resuscitating) this site

Product lessons: atomic desires, two way doors, and future complexity backseat

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02

Projects

CLI Tool

Carryover (2025)

A command-line tool to extract Claude Code session data and generate portable handoff documents for use with ChatGPT and other LLMs. It parses session logs, generates structured markdown using local Ollama models, and includes automatic secret redaction for API keys and credentials. Source here.

LLMs AI CLI Python
Text Summarization

Summarizer (2014)

Extractive text summarization in Python using classic NLP + graph ranking. It ended up powering multiple Reddit bots. Source here

NLP Text Summarization PageRank
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