Where Our Interview Questions Come From

1Point3Acres is the largest Chinese-language platform for tech immigrants sharing career and interview experiences. The premium forum tier hosts tens of thousands of detailed interview reports with question-by-question breakdowns, OA problems, system design rounds, and behavioral scripts. Accessing this content directly requires a paid subscription (approximately $100 USD/month) and the ability to read Chinese.

LeakCode translates and surfaces 1p3a forum content in English alongside the rest of the database. This makes a uniquely dense source of FAANG interview data accessible to candidates who otherwise have no path to it.

The 1p3a OJ Catalog is the 1Point3Acres online judge: a company-specific coding problem bank with 3,553+ full English problem statements, sample inputs/outputs, and graded test cases. This source covers 50 top companies. Unlike the 1p3a forum posts, OJ problems are already in English and require no translation.

This is the highest data quality source in the database: structured, verified, and essentially zero junk. Problems have full constraint sets, examples, and often multiple accepted approaches. It is the source for candidates who want actual OA-style practice on company-specific problems rather than forum summaries.

LeetCode Premium includes company-specific problem lists: curated sets of problems that a given company has asked in the past. LeakCode surfaces which LeetCode problems are tagged to each company and how frequently they appear across candidate reports.

The cross-reference value is significant. When a company-tagged LeetCode problem also appears in 1p3a, Blind, and Glassdoor reports, that convergence is a very high-confidence signal that the problem is in active rotation.

Blind is an anonymous professional social network heavily used by engineers at major tech companies. It hosts detailed interview experience threads, comp discussions, and hiring bar analysis. The anonymity model produces more candid reports than platforms where posters are identified.

Blind content often includes details that other sources skip: hiring committee feedback, bar raiser observations, specific rejection reasons. This is information that rarely appears on more professional platforms. It skews toward more experienced candidates (senior, staff) which makes it particularly valuable for that prep context.

Glassdoor has the broadest company coverage of any source in the database. It covers thousands of companies across every industry and role, including many that do not appear in more tech-focused sources. This is where LeakCode gets meaningful data for finance firms, consulting, traditional enterprise, and companies outside the US.

Glassdoor interview reviews follow a structured format: difficulty rating, questions asked, outcome. This makes them easier to parse and classify than free-form forum posts. Individual reviews tend to be shorter and less detailed than 1p3a or Blind posts, but the volume and breadth are unmatched.

GeeksforGeeks hosts community-submitted interview experiences with a strong focus on the Indian tech market. It covers mid-market companies, Indian IT firms, and regional companies that are underrepresented in every other source in the database.

GFG content quality is variable. The LeakCode audit pipeline applies stricter filters to GFG entries than to most other sources, resulting in a higher drop rate. What makes it through has meaningful signal for the company categories it covers, which no other source reaches well.

LeakCode monitors r/cscareerquestions, r/ExperiencedDevs, r/leetcode, and related subreddits for interview question threads and experience reports. Reddit has the fastest update cycle of any source: new interview reports appear within days of an interview, before they would surface anywhere else.

Reddit has the highest junk rate of any source. The audit pipeline applies aggressive filtering: only threads with explicit question content and a minimum engagement threshold pass. The drop rate for Reddit is significantly higher than other sources, but what remains has strong recency value.

InterviewDB aggregates and translates Chinese-language 1p3a interview reports into English. Where available, LeakCode cross-references InterviewDB entries to fill gaps in direct 1p3a coverage and to validate question recurrence across independent translation pipelines.