Duolingo's GPT-4 AI tutor for language learners.
View detailsHackerRank
A coding challenge platform where developers practice skills and companies assess technical talent.
HackerRank is a platform for assessing and hiring developers, with coding challenges, tests, and interviews. Companies create assessments from a library of questions, send them to candidates, and get a score and a report on each person's skills. It also runs coding competitions and a practice section where developers can improve their skills for free.
Key Features
- Coding assessments and interviews for hiring
- Library of questions across languages and topics
- Practice problems and certifications for developers
- In-browser code editor with automated tests
- Reports and scores for each candidate
- Coding competitions and community
Pricing
| Plan | Price | Details |
|---|---|---|
| Free for Developers | $0 | Practice problems, competitions, and certifications for developers. |
| Business | Check official site | Assessments, interviews, and hiring tools for companies. See the official site for current pricing. |
Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.
Popular with: Developers, Students, Business Owners
How it works
The platform covers algorithms, data structures, databases, and many programming languages, with an in-browser code editor and automated test cases. For developers, the practice section and certifications are a useful way to prepare for interviews and to show skills on a profile. HackerRank also offers a community and a job board.
HackerRank is free for individual developers to practise and compete. Companies buy a subscription for assessments and interviews, with pricing on the official site. It is best for a company that wants a structured, defensible way to test coding skills before an interview.
Pros and Cons
✓ Pros
- Strong assessment library for hiring
- Free practice for developers
- Automated scoring saves time
- Widely recognised by employers
✗ Cons
- Business pricing is not published clearly
- Free plan is limited for companies
- Test quality depends on the questions chosen
Frequently Asked Questions
Is HackerRank free?
Yes — HackerRank has a free plan. Free for developers; business plans on the official site
What is HackerRank best for?
companies that want to assess developer skills with coding tests, and developers who want to practise.
What kind of tool is HackerRank?
HackerRank is a Education & Learning tool on VerlumoAI.
Related Tools
Khan Academy's AI tutor that teaches, not just answers.
View detailsFlashcards plus an AI tutor that quizzes you — Q-Chat.
View detailsLast reviewed: November 2026