Codesota · LearnA self-paced route through the registryIssue: April 22, 2026
Editorial · Learn

AI engineering,
by reproduction.

A self-paced route from a single embedding to a production RAG pipeline. Every technique ships with runnable code and a benchmark it must clear. No “trust us,” no week-gated cohorts, no calendar lock-in.

Read the lessons in order or open any single module — the roadmap is public, the code is copy-paste, and the numbers are the same numbers that appear on the registry.

§ Modules

The roadmap, in order.

Five levels. Each module carries a difficulty tag and a one-line summary of the benchmark it terminates against.

Level 0

Foundations

No prior experience required — the vocabulary the rest depends on.

4 lessons
Level 1

Single blocks

Master each building block in isolation before composing.

8 lessons
Level 2

Pipelines

Chain two or three blocks; measure the whole, not the parts.

3 lessons
Level 3

Production

The patterns that survive contact with users.

4 lessons
Level 4

Advanced

Composed systems, measured as systems.

4 lessons
§ Note
Why reproduction

A course that teaches the habit of evidence.

Most AI courses teach a vocabulary and trust the reader to build intuition afterwards. This one runs the other way. Every lesson terminates against a published number, and the point of the lesson is whether the reader's run lands on the same number.

The habit that produces — that a technique isn't real until it reproduces — is the habit the registry is built on. A lesson that ends with “it works” and no number is, here, unfinished.

Readers who want the full standard — what counts as a benchmark, what counts as a verified result — should read /methodology alongside the course. Readers who want to contribute a real SOTA improvement rather than reproduce one should look at /academy.

§ Deep dives

Standalone long reads.

Independent of the course. Each one goes deeper on a single foundational concept, with actual maths and numerical walk-throughs rather than summaries.

Related · Further reading

Where to go next.

All routes verified live · April 2026