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. Zeli records 56,147 monthly visits with -46.8% growth and Free pricing.

Hacker News and AI paper summaries in seven languages
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | brilliant.org | zeli.app |
| Pricing Model | Freemium | Free |
| Monthly Visits | 2.43M (2,426,610) | 56.15K (56,147) |
| MoM Traffic Delta | -326.35K (-11.9%) | -49.3K (-46.8%) |
| Primary Market & Share | 🇺🇸 United States (41.9%) | 🇨🇳 China (65.1%) |
| Direct Visits / mo | 1.2M | 39.95K |
| User Rating | 4.6 | 4.3 |
| 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.

Hacker News and AI paper summaries in seven languages
Each story carries a short summary generated from the linked article plus a standout key quote, so you can judge relevance before clicking through.
The whole feed — titles, summaries and top comment highlights — is available in English, Chinese, Japanese, Korean, German, Spanish and Russian.
Every day gets a permanent page containing every story that hit the front page, retrievable long after the feed has moved on.
Daily AI papers are surfaced with translated titles and AI summaries, making Zeli a research reader as well as a news reader.
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.

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.
SpecialistLearn Linux, DevOps, and cybersecurity by doing — inside real online labs.

A proactive AI reading lens for papers, videos, and web pages
A proactive AI reading lens for papers, videos, and web pages

Excels at step-by-step homework solving and AI tutoring, but provides less structured visual concept-building courses.
Excels at step-by-step homework solving and AI tutoring, but provides less structured visual concept-building courses.
Free AI Summarizer for text, articles, URLs and images
Free AI Summarizer for text, articles, URLs and images

SpecialistProvides adaptive daily math and logic practice for children, but has less emphasis on advanced visual science lessons.

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

SpecialistDelivers gamified adaptive math tutoring for younger learners, whereas Brilliant caters to a broader, more advanced audience.
SpecialistDelivers gamified adaptive math tutoring for younger learners, whereas Brilliant caters to a broader, more advanced audience.
Generates customized AI courses instantly on any topic, but lacks the polished visual puzzles and curriculum structure of Brilliant.
Generates customized AI courses instantly on any topic, but lacks the polished visual puzzles and curriculum structure of Brilliant.