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What is kodwai?

kodwai helps developers and hiring teams see how someone actually works with an AI coding agent. Instead of banning agents or only checking whether tests pass, each challenge is a realistic, ticket-sized task solved on the developer's own machine with Claude Code, Cursor or Codex. After submission, kodwai scores the session from 0 to 100 on Direction, Outcome and Lift, and every signal is tied to evidence from the transcript, commits and test runs. For developers it is free to practice, with a public profile and leaderboard: 3 scored submissions are included, then you bring your own Anthropic key. For companies, the hiring track runs custom interview projects sent with a one-link email invite, with live observation of prompts, commits, test runs and API cost, AI scoring against the team's own per-role rubric, manual team scores and side-by-side candidate comparison. Team pricing is available on request.

What is LintCode?

Presenting an Online Training System specifically crafted for coding interviews, which focuses on algorithm development while eliminating the complexities of input/output parsing. Utilizing high-quality linting tools, you can produce well-structured code and advance through your training systematically, ensuring that the coding process is both educational and enjoyable. For those in need of further practice, the system offers filtering options based on difficulty, algorithm type, and data structure, granting access to a vast array of interview questions. LintCode boasts an impressive set of interview problems specifically designed for esteemed companies like Google, Facebook, LinkedIn, Amazon, and Microsoft, with resources available in both Chinese and English. Engage with challenges that range from building an API to access user data, developing a shopping cart program, and managing exceptions, to manipulating string elements and calculating pairs of numbers that yield a specific sum. Additional tasks include generating SMS verification codes, using module aliases, searching for lecturer numbers, interleaving zeros with even and odd numbers, and implementing a timer decorator, among countless others. This all-encompassing framework not only enhances your coding abilities but also equips you with the necessary skills and confidence for your future interviews, ensuring you are well-prepared to tackle any question that may come your way.

Media

Media

Integrations Supported

Claude
Claude Code
Codex CLI
Cursor
Git
Node.js
OpenAI Codex

Integrations Supported

API Availability

API Availability

Pricing Information

Free
Free for developers: 3 scored submissions on kodwai's key, then connect your own Anthropic API key for unlimited submissions. The challenges, score, public profile and leaderboard are free. Hiring track for teams: contact us for pricing.
Free Version

Pricing Information

Pricing not provided

Supported Platforms

SaaS
Windows
Mac
Linux

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

kodwai

Company Location

Istanbul, Turkey

Company Website

www.kodwai.com

Company Facts

Organization Name

LintCode

Company Location

China

Company Website

www.lintcode.com/en/

Categories and Features

Coding Challenge

Kodwai is an innovative platform designed for interactive coding challenges that promote self-guided learning. Each challenge presents practical, bite-sized tasks—ranging from building a REST API for a bookshelf to creating a simplified Raft log. These tasks are crafted with hidden complexities that a straightforward prompt might overlook. Participants utilize their own AI coding assistant to tackle these challenges, and their performance is measured based on how effectively they guided the AI, rather than merely on test success. Scores are based on three criteria: Direction, Outcome, and Lift, each rated from 0 to 100, complete with supporting evidence for every metric. The platform features a public leaderboard, and users can track their Direction rating which updates with each challenge attempt, along with the opportunity to compete in a weekly league.

Not specified

Categories and Features

Coding Challenge

Not specified

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