What LeetCode does

LeetCode is a Palo Alto/San Francisco-headquartered online platform, founded in 2015, that operates a curated library of more than 4,250 algorithmic coding problems across 14+ programming languages together with competitive programming contests, a developer discussion forum, structured study plans, and an online code playground. The platform serves two primary customer segments: individual software engineers preparing for technical interviews at technology and financial-services employers, and hiring companies using the platform's Online Interview and Assessment products to screen candidates. LeetCode monetizes primarily through a premium subscription ($35/month or $159/year) that unlocks company-specific interview questions, the Ask LeetNew generative-AI coding agent, Lightning Judge priority processing, smart autocomplete, an interactive debugger, and cloud storage. The business is product-led and community-driven, distributing through self-serve web access (leetcode.com) and native iOS/Android apps, with a Bug Bounty program and a LeetCoins-based rewards store as supporting ecosystem mechanics.

LeetCode's core technology stack centers on an automated Code Judge system that evaluates user-submitted solutions against predefined test cases with performance metrics (acceptance rate, beats percentage), supported by a Lightning Judge service offering up to 10x faster evaluation for premium users. The platform runs company-tagged question sets, weekly and monthly contests with ranking systems, achievement badges, streak tracking, and a real-time collaborative coding interview environment for enterprise recruiting. The proprietary dataset of curated problems, solutions, and aggregated performance statistics is increasingly used externally as a benchmark for evaluating large language models' coding abilities, which strengthens the platform's data moat.

The company raised approximately $10 million in Series A funding from Lightspeed China Partners in December 2021, designated for product upgrades, commercial ecosystem build-out, and international expansion beyond China and the United States. Operating with a disclosed headcount of 1–10 employees, LeetCode operates as a capital-efficient private LLC (LeetCode, LLC) with no public revenue disclosure and no subsequent institutional funding round reported.

Name

LeetCode

Legal name

LeetCode, LLC

Website

https://leetcode.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Headquarters

HQ city

Palo Alto

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations

Revenue model

1. Premium Subscription: Monthly and annual subscription plans providing access to premium content, company-specific interview questions, faster code judging, AI coding assistance, and exclusive explore cards and solutions

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

LeetCode is an online programming learning platform that provides a library of 4,250+ algorithmic coding problems, competitive programming contests, and study plans for software engineers preparing for technical interviews. It supplements the consumer-facing practice platform with B2B recruiting products—Online Interview for real-time collaborative technical interviews and Assessment for pre-employment coding evaluation—and offers a Premium subscription ($35/month or $159/year) that unlocks company-specific questions, AI coding assistance via Ask LeetNew, and priority Lightning Judge.

Product overview

LeetCode is a comprehensive online programming learning platform and technical recruitment ecosystem comprising a core problem-solving platform with over 4,250 coding challenges, competitive programming contests, and community discussion forums. The platform is enhanced by Online Interview (real-time collaborative coding interview platform) and Assessment (pre-employment technical evaluation tools) for businesses. Premium subscribers access Ask LeetNew AI coding agent, company-specific interview questions, Lightning Judge priority processing, exclusive content, smart autocomplete, interactive debugging, interview simulations, and unlimited Playground environments. Additional offerings include Study Plans for structured learning paths, a Mobile App for iOS and Android, and a Bug Bounty Program for security researchers.

Differentiator

Problem solved

Functional benefit

Products and services

• Problems (Problem Set) A library of over 4,250 algorithmic and coding problems organized by topic, difficulty level (Easy, Medium, Hard), and company tags, supporting 14+ programming languages including Python, Java, Rust, Elixir, Swift, Kotlin, and SQL. Used by software engineers preparing for technical interviews.
• Contest Regular competitive programming contests where users participate to challenge themselves, earn rewards, and track rankings against other users.
• Online Interview Real-time collaborative coding interview platform that enables companies to conduct technical interviews with candidates in a simulated coding environment. Targeted at enterprise hiring teams.
• Assessment Pre-employment technical assessment platform that helps companies evaluate candidates' coding skills and problem-solving abilities. Targeted at enterprise recruiting and talent acquisition teams.
• Playground Online code editor that allows developers to test, debug, and create their own projects online with support for Linked List, Binary Tree, and Fibonacci data structure templates.
• Premium Subscription Paid subscription offering the Ask LeetNew AI coding agent, company-specific interview questions, Lightning Judge for priority faster judging (up to 10x), exclusive premium content, smart autocomplete, interactive debugger, interview simulations, unlimited playgrounds, and cloud storage. Priced at $35/month or $159/year.
• Mobile App Native mobile application for iOS and Android providing access to 2,800+ live-updated challenges, personal progress tracking with widgets, contest registration with calendar sync, and mobile coding experience.
• Study Plans Curated learning paths including Top Interview 150, 30 Days of JavaScript, and other topic-specific study plans with structured progression and achievement badges for learners.
• Store Online store for redeeming LeetCoins earned through activities, offering merchandise and premium items.

Quantifiable outcome

• Users land jobs at top tech companies including Google, Amazon, Facebook, Microsoft, Uber, Goldman Sachs, Bloomberg, Stripe, LinkedIn

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature6 records

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• HackerRank: HackerRank is the closest direct competitor, offering both a consumer-facing coding practice platform and a B2B technical assessment/recruiting product serving enterprise customers. It competes head-to-head with LeetCode's Problems, Contests, and Assessment products and is the de facto alternative at most enterprise recruiting teams.
• CodeSignal: CodeSignal is a coding assessment and interview platform used by enterprises for technical hiring, with a public practice/learning layer. It overlaps directly with LeetCode's Assessment and Online Interview products and is positioned as the certified-skills alternative to LeetCode for enterprise HR teams.
• HackerEarth: HackerEarth combines a practice platform, coding contests, and enterprise assessment services, mirroring LeetCode's three core product lines. It has particular strength in India and emerging markets, making it a regional-and-functional peer for LeetCode's assessment and learning offerings.
• CoderPad: CoderPad provides real-time collaborative coding interview environments for technical hiring, directly competing with LeetCode's Online Interview product. It is widely used by engineering teams to conduct live coding interviews with candidates, overlapping with one of LeetCode's core B2B revenue streams.
• Codility: Codility is an enterprise technical assessment platform used by recruiters to evaluate coding candidates, competing with LeetCode's Assessment product. It is positioned at the higher end of enterprise recruiting workflows with a strong focus on anti-cheating and structured reporting.
• Qualified.io: Qualified.io (now part of Karat) is a technical interview and assessment platform for engineering hiring, competing with both LeetCode Assessment and Online Interview. It shares LeetCode's positioning of turning algorithmic coding challenges into a standardized enterprise recruiting tool.
• Codewars: Codewars is a community-driven coding kata and challenge platform with a strong gamification layer. It overlaps with LeetCode's Problems product and Discuss community, particularly for developers who want short, gamified practice rather than interview-specific preparation.
• Educative (AlgoExpert): Educative acquired AlgoExpert and now offers paid coding interview prep courses alongside its broader developer learning platform. It is a direct alternative to LeetCode Premium for candidates who prefer guided courses over self-serve problem grinding.
• TestGorilla: TestGorilla offers pre-employment technical assessments including coding tests for hiring teams, competing with LeetCode's Assessment product. It is positioned for broader role coverage (not just engineering), but its coding assessment module directly overlaps LeetCode's B2B offering.

Emerging players

• Exercism: Exercism is a free, community-driven coding practice platform with mentoring and language tracks. While smaller than LeetCode, it targets the same developer audience seeking structured problem-solving practice, especially for newer languages, making it an emerging functional peer rather than a direct enterprise competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/leetcode

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about LeetCode