NeetCode 150 and LeetCode's Top Interview 150 are both 150-problem interview lists, and they share only about half their problems. NeetCode 150 is organized by pattern with a video for every problem; Top Interview 150 is LeetCode's own free study plan. This page compares them and says which to pick. Guides: our NeetCode 150 roadmap and LeetCode Top Interview 150.
The two lists side by side
Counts were read from each list's own site data on November 9, 2026. Lists are edited from time to time, so numbers can drift. The overlap is our own count, matched by LeetCode problem.
| NeetCode 150 | Top Interview 150 | |
|---|---|---|
| Problems | 150 | 150 |
| Easy / Medium / Hard | 28 / 101 / 21 | 39 / 93 / 18 |
| Groups | 18 pattern categories | 23 LeetCode groups |
| Explanations | A video solution for every problem | LeetCode editorials and community solutions |
| Relation to Blind 75 | Contains all of Blind 75 | Contains 50 Blind 75 problems |
How much they overlap
77 problems appear in both lists, about 51 percent. By NeetCode category, the shared problems are spread across linked lists (8), trees (9), arrays and hashing (6), graphs (6), one-dimensional dynamic programming (6), math and geometry (6), two pointers (5) and backtracking (5), with smaller numbers elsewhere. No advanced graph problems are shared.
Where they differ
- Top Interview 150 leans on arrays and strings (24 problems) and has groups for matrices, Kadane's algorithm and divide and conquer.
- NeetCode 150 has separate groups for advanced graphs (6), greedy (8) and more two-dimensional dynamic programming (11).
- NeetCode 150 is slightly harder: more mediums and hards, fewer easies.
- Top Interview 150 lives inside LeetCode with progress tracking; NeetCode 150 adds a video for each problem.
Which one to pick
- You learn best from video: NeetCode 150.
- You want everything inside LeetCode: Top Interview 150.
- You have time for both: do NeetCode 150 first, then the roughly 73 Top Interview problems it does not include, which add array, string and matrix practice.
- Short on time: start smaller with the LeetCode 75 guide or Blind 75.
A combined plan
- Weeks 1 to 6: NeetCode 150 in category order.
- Weeks 7 and 8: the Top Interview problems not in NeetCode 150, grouped by their LeetCode group.
- Week 9: redo every problem you failed.
- Week 10: timed mixed sets and mock interviews.
Turning a list into interview skill
Any list only helps if the practice transfers to problems you have not seen. These habits make the difference:
- Time-box every attempt: about 25 minutes for a medium before you read a solution.
- Keep a log with one line per problem: the pattern, the key idea and the complexity.
- Redo failed problems after three days, a week and three weeks, without looking at your old code.
- Explain your approach out loud before and while you code, as you would to an interviewer.
- In the last two weeks, switch to unseen problems without topic labels.
The patterns most lists are built on are explained in array and string patterns and tree, graph and recursion patterns.
Where CoPilot Interview fits
Finishing a list is not the same as passing an interview: interviewers score how you explain your approach, your trade-offs and your complexity out loud. CoPilot Interview is an AI interview assistant; its free AI mock interview asks coding questions, listens to your spoken explanation and scores it out of ten with a model answer, which is the part a problem list cannot train. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. Online assessments and live coding rounds usually forbid outside help, so practice now and follow your employer's rules on the day.
Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.
Frequently asked questions
How many problems do NeetCode 150 and Top Interview 150 share?
77, about 51 percent, by our count of both lists' data in November 2026.
Which list is harder?
NeetCode 150 has slightly more medium and hard problems: 28, 101 and 21 against 39, 93 and 18.
Is Top Interview 150 free?
Yes. It is one of LeetCode's free study plans.
Should I do both lists?
If you have ten weeks or more, yes: NeetCode 150 first, then the Top Interview problems it does not include.
Practice this interview before the real one
The AI mock interview builds questions from your resume and the job description, reads them aloud and scores each spoken answer out of 10. Included on the free plan.
Start a mock interview