Unravel
The Dispatch
No. 01 · Summer 2026

A brittle engine, rebuilt in two weeks.

The last quarter in one page. A Java-to-Python rebuild shipped in two weeks, generative video every week, and a few notes worth stealing.

If you are building an AI product, here is the quarter in one page: how we rebuilt a brittle engine from Java to Python in two weeks, how we ship generative video every week without quality falling apart, and notes you can use whether or not we ever work together.

At a glance

Time to ship2wksA full Java-to-Python engine rebuild, start to cutover.
Reliability0Reverts after the rewrite, against 28 in the service before it.
Shipped116Things built and put into production, June to August.

Case study · Client engine rebuild

A rebuild, done in two weeks.

2wks
Start to cutover, Java to Python
0
Reverts after cutover, against 28 before
~50%
Less code, for a larger API surface

A client's AI music-video engine, written in Java, had grown brittle: frequent reverts and mobile apps breaking in production. We rebuilt it in Python, contract-first and verified against the real clients, and shipped the cutover in two weeks with nothing rolled back.

More from the quarter

Products · try what we build

We ship our own tools, too.

Steno

steno.unravel.tech

Meeting notes that write themselves. Steno captures the conversation and hands you clean, searchable notes when it ends.

Visit Steno →

thing

usething.ai

Push HTML, docs, images, and PDFs from your coding agents to live, commentable, versioned pages your team actually reads. This newsletter runs on it.

Visit thing →

Tablo

tablo.unravel.tech

A tiny floating cat that watches your Claude Code and Codex agents from a corner of your screen. Live context meters, permission approvals, one cat.

Visit Tablo →

Weighing a rebuild?

Thirty minutes. We will tell you straight whether it is worth doing, what it would take, and how fast we could do it. No pitch deck required.

Book a 30-minute call → Or just reply to this email. It reaches us directly. kapil@unravel.tech