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. GhostCoder records 1,119 monthly visits with +840.3% growth and Free Trial, Paid pricing.
Undetectable AI coding assistant for technical interviews
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | brilliant.org | ghostcoder.app |
| Pricing Model | Freemium | Free Trial, Paid |
| Monthly Visits | 2.43M (2,426,610) | 1.12K (1,119) |
| MoM Traffic Delta | -326.35K (-11.9%) | +1K (+840.3%) |
| Primary Market & Share | 🇺🇸 United States (41.9%) | 🇮🇳 India (100%) |
| Direct Visits / mo | 1.2M | 433 |
| 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.
Undetectable AI coding assistant for technical interviews
AI suggestions appear in a modal only you can see, keeping them out of screen-sharing captures.
Hover-to-click interaction removes visual and audio cues that could give you away during an interview.
Query OpenAI, Google Gemini, or Anthropic Claude directly with your key, paying only for what you use.
The app reads what is on screen and uses that context to produce relevant code, explanations, or solutions.
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.
An agentic coding platform that ships real software
Free / Open-sourceA minimal, extensible terminal coding agent you can reshape
Free / Open-sourceA minimal, extensible terminal coding agent you can reshape

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.

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.

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.
Real-time AI interview copilot and prep coach in one platform
Real-time AI interview copilot and prep coach in one platform

Real-time, invisible AI interview and coding assistant
Real-time, invisible AI interview and coding assistant