epochai replaces lecture videos with real interactive widgets and real code execution. You run actual Python and SQL, get graded server-side, and see it click — from your first lesson to autonomous agents.
No lesson ends until you've actually done something with the concept — not just read about it. This sequence repeats for all 49 lessons in the free tier, and every module after it.
Short prose and syntax-highlighted code — the minimum you need before touching anything.
Step through a live DOM/SVG widget yourself — drag, click, and watch state change in real time.
Submit a value or choice before you're told the outcome. Graded server-side — no peeking at the key.
A short reinforcement pass ties the widget back to the concept you just proved you understood.
Lesson state flips to passed, XP posts to your account, and the next lesson unlocks.
Every widget runs in two modes: Watch (it plays itself, step by step) or Explore (you drive it, forward and back) — always with the real source code visible alongside the animation, synced line-by-line, never standing in for it. All built on the same dark, high-contrast canvas — flat, no gimmicks, nothing to distract from the data.
Start free and work through 49 real lessons across four modules, at your own pace — each one unlocks the next the moment you finish it. Pro unlocks the eight modules that turn "I can code" into "I can ship AI systems."
Free is deep enough to know whether this clicks for you — full XP system, both sandboxes, the whole widget library. Pro unlocks the eight modules that take you from "I can code" to "I can ship AI systems."
Every certificate resolves to a public verification page — no login required. Share it on LinkedIn, and it holds up.
Correct — every concept in the core curriculum is taught through text, code, and the interactive widgets. If a lesson has a motion element, it's a short auto-playing animation you can pause and inspect, not a lecture you sit through.
Your Python or SQL runs in an isolated sandbox on our servers — real interpreter, real output, a hard timeout, and no network access. Grading compares your result against hidden test cases; the expected answers never touch your device.
On Free, finishing a lesson unlocks the next one — no XP threshold, no paywall on day one, just sequential progress through Modules 1–4. Pro doesn't change that pacing; it adds eight more modules (SQL & Data Engineering through MLOps & LLMOps) on top of it, plus priority sandbox execution and priority support. XP itself is separate from unlocking either way — it just drives your leaderboard rank, level, and achievement badges.
Yes, anytime, through Google Play. You keep Pro access through the end of your current billing period, then drop back to Free — your XP, streaks, and certificates all stay intact.
They're included. Pro isn't a snapshot of today's content — Classical ML, Deep Learning, LLMs, Agents, and MLOps all roll into your existing subscription as they ship.