SpecialistFocuses specifically on interactive programming and coding lessons, whereas Brilliant covers broad STEM and math concepts.
Brilliant records 2,426,610 monthly visits with -11.9% month-over-month growth and Freemium pricing. CodeFast records 13,640 monthly visits with -63.8% growth and Paid pricing.

Learn just enough code to launch a real online business in 14 days
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | brilliant.org | codefa.st |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 2.43M (2,426,610) | 13.64K (13,640) |
| MoM Traffic Delta |
| -326.35K (-11.9%) |
| -24.04K (-63.8%) |
| Primary Market & Share | 🇺🇸 United States (41.9%) | 🇮🇳 India (39.9%) |
|---|
| Direct Visits / mo | 1.2M | 5.88K |
|---|
| User Rating | 4.6 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

Interactive math, coding and AI tutoring you learn by doing
Learn math, science, CS and AI through short, visual exercises that build intuition step by step rather than passive video watching.
A visual, interactive tutor that works on a shared canvas, asks guiding questions and gives hints without simply revealing the answer.
Quizzes and reviews adapt to your level, tracking what you have mastered and resurfacing topics that still need work.
Write and run real code to learn programming logic, algorithms, data structures and debugging skills relevant to the AI era.

Learn just enough code to launch a real online business in 14 days
Fundamentals, a full SaaS build, and the business side — payments, domains, hosting, SEO — are covered in about twelve hours of video instead of the dozens of hours a conventional JavaScript course spends on topics you will never use.
Rather than theory for interviews, you progressively build a real authenticated, paying SaaS, which is the actual deliverable of the course.
Sections on AI-powered coding and design show how to use AI to explain code, fix bugs and generate parts of your app, framed as leverage on top of fundamentals.
The syllabus includes the non-coding skills that decide whether an app makes money: copywriting essentials, payments with Stripe and LemonSqueezy, domain and DNS setup, hosting and SEO.
SpecialistFocuses specifically on interactive programming and coding lessons, whereas Brilliant covers broad STEM and math concepts.

SpecialistYour personal AI tutor for every subject, from notes to exam day.

SpecialistProvides deep interactive training for data science and programming, but omits foundational math and general science topics.
Free / Open-sourceAI engineering courses, certificates, and the world's biggest AI newsletter

SpecialistAI-powered A Level and GCSE courses with a top-grades-or-refund guarantee
SpecialistLearn Linux, DevOps, and cybersecurity by doing — inside real online labs.

Free / Open-sourceFree courses, live events and community for building real AI skills


Excels at step-by-step homework solving and AI tutoring, but provides less structured visual concept-building courses.

Free / Open-sourceFree AI hackathons and a global community for AI builders

SpecialistProvides adaptive daily math and logic practice for children, but has less emphasis on advanced visual science lessons.
Free / Open-sourceFree practical deep learning courses, research and open-source libraries

Offers Socratic AI tutoring and problem guidance, but lacks Brilliant's signature interactive visual math and science puzzles.

Free / Open-sourceAI engineering courses, certificates, and the world's biggest AI newsletter
SpecialistLearn Linux, DevOps, and cybersecurity by doing — inside real online labs.
Free / Open-sourceFree courses, live events and community for building real AI skills
Excels at step-by-step homework solving and AI tutoring, but provides less structured visual concept-building courses.
Free / Open-sourceFree AI hackathons and a global community for AI builders
Offers Socratic AI tutoring and problem guidance, but lacks Brilliant's signature interactive visual math and science puzzles.