The September edition brings the curriculum to 523 lessons across 20 phases, with 20 new lessons and 21 revised lesson texts since Edition 2026.08. It adds learning paths for real engineering work, expands Agent Skills and MCP practice, and improves the experience of moving between the website, repository, and terminal.

Choose a path through the curriculum

The new AI Engineering Learning Paths organize the course into four core domains, two specialist paths, and six career routes.

Explore Building and Deploying AI Applications, Software Engineering Fundamentals, Agent-Assisted Engineering, and Product Judgment and Delivery. Career routes connect existing lessons to customer AI deployment, developer experience and education, AI data systems, agent systems, LLM product engineering, and evaluation and reliability.

Each career route includes a shared foundation, role practice, a proof project, and evidence you can use to assess your readiness.

Build Agent Skills and MCP systems

• A five-lesson Agent Skills Engineering path covers portable skill contracts, discovery, invocation, permissions and sandboxes, and evaluation and packaging. Complete skill bundles include their scripts, references, and assets.
• A 17-lesson MCP path covers servers and clients, transports, resources and prompts, authorization, tool contracts, reliability, registry admission, and conformance checks, with an optional integration capstone.
• Twelve new agent-engineering lessons teach task framing, planning from evidence, isolated delegation, workflow discovery, risk, success metrics, and delivery decisions.

Install the learning skills into your coding agent:

npx skills add rohitg00/ai-engineering-from-scratch

Then ask it to use start-learning, learn-agent-skills, or learn-mcp.

A more consistent learning experience

• Clearer homepage entry points and responsive learning-path navigation.
• Theme synchronization, improved lesson and artifact cards, and corrected career-route navigation.
• Quiz prompts that keep answer keys separate and avoid revealing correct options through reply-format examples.
• More balanced placement questions and corrected answer-position bias in the reported lesson quiz.
• Updated public counts, social previews, search metadata, and machine-readable lesson access.

Translation coverage

All 523 phase lessons have published machine translations with source hashes matching this edition in Simplified Chinese, Hindi, Spanish, Arabic, French, Portuguese, Turkish, and Vietnamese. That is 4,184 current lesson translations across eight languages.

The 12 translated README landing pages are synchronized, including the sponsor section. Machine-translated lesson prose remains on the dedicated translations branch, and code and other protected technical content remain in their original form.

Certification curricula continue to be available in English through the website and repository and remain outside the translation and book pipelines.

Books

All six English volumes are rebuilt as EPUB and PDF files from this edition's source and attached below:

The book renderer now preserves literal examples such as <image>, <PERSON>, and <doc A> as text in both formats, fixing malformed EPUB chapters and examples omitted from PDFs.

PDF code blocks, inline code, long table identifiers, and bare reference URLs now wrap within the page instead of being clipped at the edge.

Interactive figures, graded quizzes, and runnable labs remain accessible through each chapter's online links. The website and README book links continue to use the latest release assets.

Sponsors

Thank you to SerpApi for supporting the curriculum. SerpApi provides a Web Search API for AI apps, available in Markdown and JSON.

Full changes since Edition 2026.08

The August edition. Three big surfaces landed: a certification prep program, the course in five languages, and a rebuilt way to navigate all 503 lessons.

Certification prep, free and build-first

A new certifications section turns public exam blueprints into study paths you build through, not read through. The first program covers all four Claude credentials from the July 2026 exam guides (Associate, Developer, Architect Foundations, Architect Professional): 33 in-depth lessons, runnable labs, diagnostics, capstones, and 295 original assessment questions.

It is AI-native: Claude Code, Codex, Cursor, or any SKILL.md agent can teach a route, run the labs, quiz you, and resume your progress.

npx skills add rohitg00/ai-engineering-from-scratch
/claude-certification

Independent community material: not affiliated with, endorsed by, or authorized by Anthropic. No live exam questions, no pass guarantees. Details in the announcement.

The course now speaks your language

Lessons are machine-translated into Simplified Chinese, Hindi, Spanish, Arabic, and Turkish, rolling out phase by phase. Pick a language from the site header or add ?lang=zh to any lesson URL; anything not yet translated falls back to English. The engine is NLLB-200 running free inside CI, with code, math, tables, and diagrams protected byte-for-byte. The README's landing copy is hand-translated into 12 languages. Details in the announcement.

Navigate 503 lessons like a map

• The roadmap is now an interactive dependency graph: see what unlocks what, top to bottom, instead of scrolling a flat list.
• The glossary grew to 243 terms across 12 learning areas.
• Every one of the 503 lessons now has an animated figure.

Learn in your terminal

Five learning skills install into any agent with one command: /start-learning builds a placement-based study plan, /learn teaches the next lesson interactively and tracks progress, /course-guide routes any topic or bug to the exact lesson, plus the placement quiz and per-phase checks.

npx skills add rohitg00/ai-engineering-from-scratch
/start-learning

Also in this edition

• Read lessons aloud with the browser speech engine, including diagram-aware narration.
• Quiz integrity fix: correct answers were biased toward the same option position across 2,026 questions; now uniformly distributed, with a CI guard.
• Statistics corrections in Phase 1: t-test p-values at large degrees of freedom and a chi-squared p-value that ran 7.5x too large.
• Homepage: cycling figure plates that explain the course, an evidence-backed learner wall, and a copy-ready install card.

Books

The six-volume EPUB and PDF editions attached below are rebuilt from this edition's sources. The book is the snapshot; the repository is the living edition.

First book edition. EPUB and PDF for all six volumes are built by CI from the lesson sources and attached to this release automatically; allow the build a few minutes to upload them. The download links on the site and README always point at the newest release.