LeetCode Alternatives: Top platforms for coding practice

LeetCode is the most widely used platform for practicing coding problems often asked in technical interviews. For many engineers preparing for roles at top tech companies, it's the default starting point. LeetCode isn't the only option, though, and different platforms serve different learning styles, experience levels, and specific skill goals.

What are LeetCode and LeetCode alternatives good for?

Coding interview prep usually comes down to building fluency with data structures, algorithms, and the kinds of problem patterns that show up in timed interview rounds. Platforms like LeetCode and its alternatives provide problem sets that let you practice arrays, linked lists, trees, graphs, heaps, and other core structures in realistic interview formats.

Solving problems under timed conditions also helps with the parts of interviewing that pure study can't cover:

• Improving speed and reducing errors under pressure
• Getting comfortable with common patterns like two pointers, sliding window, backtracking, and dynamic programming
• Recognizing which techniques map to which problem types
• Building endurance for multi-round interview days

If you're looking for straightforward coding practice, here are the platforms worth starting with.

Pricing below is current as of April 2026; check each platform for the latest rates.

LeetCode

LeetCode is the industry baseline for coding interview practice. It offers thousands of algorithmic problems, timed contests, mock interview features, and company-specific problem lists that map to what real hiring teams ask. It's a go-to resource for tech job seekers aiming to perform well in technical interviews.

Who it's for: Engineers at any level preparing for coding rounds at top tech companies, particularly those who want a large, searchable bank of real interview problems to work through.

What it does well: LeetCode's breadth and volume are unmatched. It covers everything from easy warm-ups to extremely challenging problems, mirrors the kinds of questions asked at FAANG and other top-tier companies, and supports contests that simulate real interview conditions. Interviewers at many companies pull problems from LeetCode directly.

What you'll be missing: LeetCode is a problem bank without a built-in curriculum, which can leave engineers unsure of what to actually study. It also doesn't cover system design or behavioral interviews, both of which matter more as candidates move into senior roles.

Price: Free tier with access to a large portion of problems. LeetCode Premium is $35 per month or $159 per year and adds company-specific questions, premium problems, and more detailed interview features.

NeetCode

NeetCode has become one of the most widely used companions to LeetCode. Its curated lists, the Blind 75 and NeetCode 150, are common starting points for focused interview prep, with clear video walkthroughs for every problem.

Who it's for: Engineers who want a structured roadmap through the most important interview patterns, or who learn best from video walkthroughs rather than text explanations.

What it does well: NeetCode adds structure on top of LeetCode's problem bank through its curated lists and high-quality video explanations. The lists cover the patterns most likely to appear in real interviews, and many engineers pair NeetCode with LeetCode: NeetCode for guidance, LeetCode for volume and company-tagged problems.

What you'll be missing: The problem set is smaller than LeetCode's, with roughly 300 curated problems in total. System design coverage is growing but less deep than dedicated resources.

Price: Free tier with the core curated lists and videos. NeetCode Pro is $119 per year or a lifetime purchase around $219.

HackerRank

HackerRank is one of the longest-running platforms for coding practice and is also used by many companies to screen candidates during hiring. It offers challenges across algorithms, data structures, artificial intelligence, databases, and language-specific skills, and hosts competitions to help engineers test their skills under pressure.

Who it's for: Developers at any level who want broad practice across a variety of computer science topics. Also useful for engineers who know they'll be taking a HackerRank-administered assessment as part of a hiring loop.

What it does well: HackerRank offers a wide range of problem types and real-world scenarios that replicate the challenges given during technical interviews at many companies. Certification tracks and timed assessments closely mirror real hiring tests, so practicing in the actual environment removes surprises later.

What you'll be missing: Less depth on advanced algorithm problems compared to LeetCode, and no system design or behavioral coverage.

Price: Free for individual developers. HackerRank's paid tiers are built for companies hiring at scale, not for individual interview prep, so most engineers will never need to pay to use it.

CodeSignal

Known for its standardized assessment platform, CodeSignal is used by many employers during screening and gives engineers a consistent way to benchmark their skills against a scoring framework.

Who it's for: Job seekers preparing for CodeSignal-based assessments, and engineers who want a standardized way to benchmark their skills over time.

What it does well: CodeSignal provides a consistent testing environment and scoring system that closely mirrors what candidates encounter in real hiring processes. Practicing in the same format used in live assessments removes friction during the actual rounds.

What you'll be missing: Less focus on curated learning content and teaching compared to video-led platforms, which can make it feel thin on explanations if you're trying to build skills from scratch.

Price: Free developer practice through CodeSignal's learning experience. Paid features are aimed at companies using the platform for hiring.

AlgoExpert

Created by an ex-Google engineer, AlgoExpert offers around 160 curated coding problems with detailed two-part video walkthroughs for every problem, plus a built-in coding workspace. Expanded tracks cover system design (SystemsExpert), frontend (FrontendExpert), and machine learning.

Who it's for: Engineers who prefer video-led teaching and want a curated set of problems with deep explanations over a massive problem bank.

What it does well: The platform breaks down complex problems with polished video walkthroughs and provides a clean coding workspace for practice. The curated format and 9-language support make it a strong choice for building intuition on core patterns before moving into more open-ended practice.

What you'll be missing: Smaller problem count than LeetCode or HackerRank, and no company-specific question tagging. The focus stays on algorithms, data structures, and system design, so engineers needing broader topics may want to supplement with other resources.

Price: AlgoExpert alone is $99 per year. The bundle with SystemsExpert is $199 per year. Pricing changes periodically, so check current rates on the site.

Codeforces

Codeforces is the most active destination for competitive programming and is where engineers sharpen algorithm skills well beyond typical interview expectations.

Who it's for: Engineers targeting roles where advanced algorithm skills are tested, such as quantitative finance or competitive programming-heavy teams, and anyone who enjoys a contest-driven environment.

What it does well: Problems go deeper than most FAANG coding rounds, weekly contests are large and active, and editorials after each round break down the hardest problems in detail. The community is one of the most engaged in the competitive programming world.

What you'll be missing: The learning curve is steep, and the emphasis on speed and algorithmic tricks doesn't always match how interview rounds are evaluated, which focus more on clear communication and structured problem-solving.

Price: Free.

Codewars

Codewars engages users through martial arts-themed ranks and kata challenges created and honed by the community. Coders practice and ascend through the ranks by completing coding tasks of increasing difficulty.

Who it's for: Engineers who enjoy a community-driven approach to learning and thrive on gradual progression and peer feedback.

What it does well: Codewars offers a wide library of programming challenges across many languages, with gamified progression mechanics that make steady practice engaging and active community discussion on solutions.

What you'll be missing: Because the platform is community-driven, the quality and clarity of challenges can vary, and it lacks the structured interview prep focus of LeetCode or NeetCode.

Price: Free with optional donations to support the platform.

GeeksforGeeks

GeeksforGeeks is a computer science portal that offers detailed articles, tutorials, and practice problems across a wide range of topics. It's especially popular for its exhaustive archives of company-specific interview questions and its articles explaining fundamental concepts and algorithms.

Who it's for: Students, educators, and professionals looking for a comprehensive educational resource to deepen their computer science knowledge alongside interview prep.

What it does well: GeeksforGeeks provides an extensive library of content covering nearly all aspects of computer science and programming, suitable for learning new topics or brushing up on existing skills. The company-specific interview question archives are particularly useful as a reference during prep.

What you'll be missing: The user interface and experience can feel less polished than other platforms, and the sheer volume of content can be overwhelming without a clear learning path.

Price: Most resources are free. Premium plans offer more structured courses and advanced material, and live courses are available for purchase at various price points.

Exercism

Exercism focuses on mentor-guided exercises across more than 50 programming languages, emphasizing good coding practices and personalized feedback.

Who it's for: Learners of all levels who value personalized feedback and want to improve their coding style and problem-solving skills alongside interview prep.

What it does well: Exercism offers robust mentorship and community feedback. Users receive constructive critiques focused on coding technique and idiomatic style, an emphasis that's harder to find in most interview prep tools.

What you'll be missing: The learning pace can depend on the availability of mentors, which can vary and slow progress. The platform is also less focused on interview-specific problem patterns than others on this list.

Price: Free, operating on a nonprofit model.

Where AI tools fit in coding interview prep

AI coding tools like ChatGPT, Claude, Copilot, and Cursor have become part of how many engineers prepare for interviews in 2026. Used carefully, they can accelerate understanding of unfamiliar patterns, generate variations of problems you've already solved, and explain solutions in more depth than static text.

They can also undermine the skills interviews actually evaluate when engineers lean on them too heavily. Interview practice is meant to build the ability to reason through problems under pressure, explain your thinking out loud, and make decisions without a tool feeding you the next step. Engineers who outsource too much of their practice to AI often find themselves less prepared than their solved-problem count would suggest.

A few patterns that tend to work:

• Attempt each problem fully on your own before opening any AI tool. Struggle productively for a set period.
• Use AI to explain what you missed after you've attempted a solution yourself, rather than to generate solutions from a prompt.
• Once you've solved a problem, ask AI to produce variations. This builds pattern recognition across problem types.
• Practice verbalizing your approach out loud before asking AI to review your logic.

Companies are also taking different stances on AI use during interviews themselves. Some top tech companies now permit or expect engineers to use AI assistants during coding rounds; others explicitly forbid it. The recruiter's instructions should make this clear, but it's worth asking directly if you're unsure what's allowed.

Should you use LeetCode for advanced interview prep?

Our short answer is no; you shouldn’t rely solely on LeetCode when preparing for an interview at a top-tier tech company. Here’s why.

LeetCode problems are often abstract and focused on algorithms and data structures. While these are crucial for interviews, they sometimes translate differently to the kinds of tasks you might be responsible for in a real job, where software development involves more than solving isolated problems. This can include debugging, working with legacy code, understanding and implementing business logic, and collaborating within a team environment.

For many software engineering roles, especially at senior levels, interviews also cover system design and behavioral aspects. System design questions assess a candidate’s ability to architect software systems on a large scale, and behavioral questions evaluate a candidate's soft skills and cultural fit. LeetCode primarily focuses on coding and algorithms, which means candidates might be underprepared for these other crucial areas. 

Communication skills, teamwork, adaptability, and other interpersonal skills are essential in most tech roles but aren't developed by solving coding challenges alone. That’s why we recommend a holistic interview coaching program to help you during your job search and beyond.

Get holistic interview prep with Formation

The Formation Fellowship gives mid-level and senior engineering job seekers everything they need to land their dream roles—including personalized skill brush-ups, unlimited mock interviews with experienced software engineers and hiring managers from top-tier tech companies, career and negotiation support, and more. 

If you’re having trouble navigating your job search on your own, apply here and get unconditional support from a team of engineering mentors, technical recruiters, career coaches, and more.