Developer education for the AI era
AI solved the easy half of your job. Unlearn trains the other half, so you build better software and grow as an engineer.
2:14 / 5:48
Spec a Product
OpenSpecDesign a Feature
Build Features
Review AI Code
Versus · 4 min readJev vs LLMs
TLDR · 3:38What is Jev?
TLDR · 5:04Practical Jev Demo
LiveSpec-Driven Development: From Idea to Production with AITurn a vague idea into a detailed product spec
npx skills add unlearndev/skillsCopyFrom the team that trained 2,000,000+ developers at
Which engineer are you becoming? A role is a route through the courses in the order you use them, and finishing it earns the role certificate.
Own what gets built and how, end to end, with agents doing the typing.
For decades the code was the bottleneck, so the work got split. Someone wrote the ticket and someone else typed it out. Agents made the typing nearly free, and the gap between the two is where things break now. A product engineer closes it, turning a product goal into a spec an agent can't misread, directing the build, and owning what ships.
9 steps 78 lessons The Product Engineer certificate
Calling a model takes one line. Making it reliable inside a real product, with retrieval, evals and an interface that holds up, takes an engineer.
Agents follow whatever structure they find. Architects design systems where the right change is easy and the wrong one is hard.
Most automation doesn't need a model. You know when a script or a hook will do, put agents only where the work needs judgment, and build pipelines that run on their own.
Tools don't change teams, habits do. You take a team from skeptical to effective without letting quality slip.
When the code writes itself, how it feels becomes the product. Design engineers shape the experience and ship it, with no handoff in between.
Five topics cover the whole lifecycle as it works with agents. Every course and tool sits in one.
The Toolkit has 18 tools you install in one line, each taught inside a lesson, and 10 more already on the way, because it grows with every course we ship.
npx skills add unlearndev/skills. Spec Generator, Code Review, Ship Gate, Triage, and more.Installs into any coding agent.
In this lesson, you'll take your rough specification and turn it into something far more solid by removing assumptions, adding missing details.
Synced to the video; select a line to jump there.
Questions about this lesson show up here.
That's the loop. A platform you work alongside, not a library you never finish.
Here's a permissions check AI generated. It compiles, it passes linting, it looks production-ready.
export async function getUserPermissions(userId: string) { const user = await db.query( FROM users WHERE id = ); const permissions = .flatMap((role) => role.permissions); return [...new Set(permissions)];}
export async function getUserPermissions(userId: string) { const user = await db.query( `SELECT * FROM users WHERE id = ${userId}`); 'SELECT id, roles FROM users WHERE id = $1', [userId]); if (!user) return []; const permissions = user.roles.flatMap((role) => role.permissions); return [...new Set(permissions)];}
Three issues hide in here. Hover each to see why it matters.
String interpolation in a query. Safe today if the input is internal, a vulnerability the moment someone calls this function differently.
`… WHERE id = ${userId}`);'… WHERE id = $1', [userId]);
Taught in Reviewing AI-Written CodeWorkflow · 12 lessons
SELECT * pulls every column in the table, now and in the future. When schemas grow, this becomes a data leak you didn't plan for.
`SELECT * FROM users …'SELECT id, roles FROM users …
Taught in Reviewing AI-Written CodeWorkflow · 12 lessons
If this user doesn't exist, this line crashes. AI assumed the happy path. Production won't.
const user = await db.query(…);if (!user) return [];
Taught in Reviewing AI-Written CodeWorkflow · 12 lessons
A real PR has hundreds of decisions just like these, each one context the model didn't have and you do. Catching bad code is only the start. The same judgment matters when you scope features, steer an implementation, or build the guardrails that stop these issues before they happen.
What changed this week, and what's worth your time. Free for everyone.
Week 41 · Oct 5 to 11, 2026
AI development has been built around one assumption: give a model some context and ask it to generate something. This week, we've seen more signs that the model stack is getting specialised.
Alex Garrett-Smith · Oct 9
Comparison · 4 min read
Jev was faster and cheaper than an LLM judge in OpenRouter's benchmark. Try it for one decision with a fixed set of answers.
TLDR · 3:38
Jev is a model built to decide, not generate, so you hand it state and a typed question and get probabilities back.
TLDR · 5:04
Jev returns a probability for each question you ask, and your own code decides how high it must be before you act on it.
Coming soon
A weekly episode with Alex Garrett-Smith on new releases, new tools, and what they mean for how you work.
Long conversations with engineers who changed how they work with AI.
AI is the current abstraction layer, the way compilers and frameworks were before it. But this one automates the part that felt like your job, and the output looks like something a developer wrote.
That widens the gap. AI amplifies whatever you bring to it: strong instincts scale, weak ones scale too, in the wrong direction. Unlearn is where you build the instincts that scale the right way.
"I've mass-ignored everything out there on AI for developers because it all looks great in a demo and falls apart on anything real. But Unlearn actually changed how I build things."
Kostas Maniatis, Full Stack Developer, FlexpediaThe only subscription a developer needs for the AI era, and whatever comes after it.
$299 full price
"Went through the Unlearn material and it's easily the best I've seen on architectural thinking in an AI workflow. Really good stuff."
Filip Rakowski, Co-founder & CTO, AlokaiUnlearn Plus includes
30-day full refundCancel anytime
100% secure checkout via Chargebee
Unlearn Teams, 5 seats
Billed yearly, 2 to 50 seats. Each seat includes all of Plus.
From 2 to 50 seats. Less per seat from 11 seats.
You save $415.00 a year
Need 50 or more seats? Talk to us and we'll invoice your company instead of charging a card. Email us to pay by invoice
More than 50 seats? Write to [email protected]
The team plan adds
Lock in as an early member and your rate stays for as long as you keep your subscription. An early-access rate, not a discount that expires.
New lessons, tools, and a fresh Radar every week. Your subscription covers everything we ever build. You pay once a year. We ship every week.
Not for everyone. That's the point.
A company that teaches developers for a living, and the engineer who leads the curriculum.
We've been teaching developers since 2017, and more than 2 million of them have learned with us. We run FrontendNation, one of the biggest online dev conferences out there, and the official Vue.js and Nuxt certifications, built hand in hand with the people who created those frameworks.
Unlearn is all of that, pointed at the part of the job AI changed.
Alex Garrett-Smith, Technical Education Lead at BitterBrains.
Built Codecourse into a 300,000-subscriber channel and a full learning platform, acquired in 2025. Now leads the curriculum and judgment frameworks behind Unlearn. Sixteen years teaching developers how to build, now writing the playbook for what comes next.
Start free today, or lock in $219/yr and keep that rate for as long as you stay. The price rises to $299 in 01:48:09, and it isn't coming back.
30-day full refund. Cancel anytime.
Not ready yet? Radar is free for everyone: a weekly note, tool comparisons, and short how-tos. No spam, useful stuff only. Get free content
No. Lesson 1 of every course is free without an account. A free account adds Radar, the blog and the open source tools, with no card. Plus unlocks every role, course and tool.
Everything, right away. Checkout unlocks every role, course and Toolkit tool, and Radar lands every week. New courses and tools keep shipping, and they're included at the rate you locked in.
Yes. The judgment applies to any stack and any AI tool. For the setup, the AGENTS.md starters cover 13 stacks, including Laravel, Nuxt, Next.js, Rails and SvelteKit, and the skills install into any coding agent with one command.
A route through the courses in the order you use them, built around the engineer you're becoming. Finish every step and you earn the role certificate. Product Engineer is live, and five more roles are on the way.
Using AI and trusting what it hands you are two different skills. In a survey of 3,080 developers, 44% rated themselves average at judging AI output. They ship faster and second-guess more.
If you already lean on AI, you'll get more out of Unlearn than someone just starting, because you're already making the calls it trains.
Most of them teach a tool, and the tool changes next month. Unlearn teaches the calls you make around it, like what to spec, what to hand off, and what to reject in review. The tools part stays current too, because new courses and tools keep shipping.
If you're senior, you'll move through the principles fast and spend your time where it pushes you, like context engineering, spec-driven development and reviewing AI-written code. If you're earlier in your career, every course starts with the principle before the tool, so you build the judgment that usually takes years of mistakes.
Lessons run under seven minutes on average, and each one ends with something you use on your own project the same day. You don't have to finish a course to get value. One lesson on reviewing AI-written code changes how you read the next PR.
Yes. Switch the plan card to Team, pick your seats and check out in one go. The price per seat drops as the team grows, and everyone gets all of Plus. Planning a bigger rollout or need procurement paperwork? Write to [email protected] and we'll work it out with you.
Most AI training runs $400 to $1,500. With 2,000,000+ developers trained across our platforms, we can price for reach instead of margin, so Unlearn works for developers without a training budget.
Early access is $219 a year and goes to $299 when the countdown ends. Lock it in and it stays yours for as long as you keep your subscription.
Nothing. Your free account and all of Radar stay free. The rise only changes the paid price, from $219/yr today to $299/yr after the countdown ends.
Credit and debit cards, Apple Pay, Google Pay and PayPal. Teams can also pay by invoice or bank transfer. Write to [email protected] and we'll set it up.
Yes. Checkout runs through Chargebee, and you can add your VAT number or company details to the invoice from your account settings. Teams get one invoice for every seat.
Students, yes. Email [email protected] from your student address with a copy of your student ID and we'll sort it out.
Regional pricing, not right now. We keep the price low so it stays fair for developers everywhere.
Yes. If it doesn't change how you ship, you get every cent back within 30 days. No form and no retention call, just an email to [email protected].
Please do. Email [email protected] with anything, a question about your stack, a team rollout, or whether Unlearn fits where you are right now. People on the team read every message, and we aim to reply the same day.