Codecademy
Interactive coding courses with an AI assistant
We publish a full Four-Mismatches fit assessment for the student-facing exam tools first. For this one, the facts below are what we have verified — run the Four Mismatches Test on it yourself for your own students.
Independence: Addestra builds learning products too (MathsTutor, TinkerWell). We never review or score our own, and no tool pays to be listed or to rank higher — how we assess fit.
What it does
What the AI actually does — Interactive in-browser exercises with automated checking, plus an AI Learning Assistant (2023) that explains and fixes errors.
Why it was built — Learn to code by writing it in the browser, with instant auto-checked feedback, instead of watching lectures.
Who built it
- Company
- Codecademy
- Founders
- Zach Sims · Ryan Bubinski
- HQ / origin
- New York City, USA
- Founded
- 2011
- Model
- B2C / B2B
- Ownership
- Owned by Skillsoft (acquired 2021)
- Languages
- English
- Pricing
- Freemium (Pro) + enterprise
We record durable facts only — no funding-raised or user-count figures. Unverified fields are marked [TBD] rather than guessed.
Where it sits
Codecademy is on the EdTech AI 100 map, in coding & stem skills, built in United States.
Related & alternatives
- SololearnMobile-first coding lessons with AI practice
- DataCampData and AI skills with an in-browser tutor
- ReplitBrowser IDE with AI pair-programming for learners