Related Products
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About
The programming interview is a winnable game. I'll show you the tricks to quickly solve problems you've never seen before. I'll teach you the right way of thinking for breaking down tricky algorithmic coding interview questions you've never seen before. No prior computer science training is necessary — I'll get you up to speed quickly, skipping all the overly academic stuff. Big O notation is the language we use for talking about how long an algorithm takes to run. It's how we compare the efficiency of different approaches to a problem. It's like math except it's an awesome, not-boring kind of math where you get to wave your hands through the details and just focus on what's basically happening. With big O notation, we express the runtime in terms of—brace yourself—how quickly it grows relative to the input, as the input gets arbitrarily large.
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About
kodwai is a platform where developers solve real coding challenges on their own machine with their own AI coding agent (Claude Code, Cursor, or Codex) and get scored on how well they direct the agent, across three axes: Direction, Outcome, and Lift. Pick a ticket-sized challenge (a multi-tenant rate limiter, an idempotent ETL pipeline, a Raft-lite log), run npx @kodwai/cli@latest challenge <slug> to pull the problem, starter code and tests into a fresh git repo, solve it the way you actually work, then run npx @kodwai/cli@latest submit. The score is 0 to 100, and every signal cites evidence from your transcript, commits and test runs. Free for developers with a public profile and leaderboard. Hiring teams can run private real-world interviews and see how candidates work with AI agents: the prompts, the recovery, the verification, the result.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Coding Challenge platform for individuals
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Audience
Software developers who code with AI agents, and engineering teams hiring for AI-assisted development
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$149 per 3 weeks
Free Version
Not Supported
Free Trial
Supported
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Pricing
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
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationInterview Cake
United States
www.interviewcake.com
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Company Informationkodwai
Istanbul, Turkey
www.kodwai.com
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Alternatives |
Alternatives |
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Categories |
Categorieskodwai is a coding challenge platform built for agentic coding. Challenges are realistic, ticket-sized tasks (from a bookshelf REST API to a Raft-lite log) and each one hides a few traps that a single prompt tends to miss. You solve them locally with your own AI coding agent, and the score reflects how well you directed it, not just whether the tests passed: Direction, Outcome and Lift, from 0 to 100, with evidence for every signal. There is a public leaderboard, a Direction rating that moves with every scored run, and a weekly league. |
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Integrations
Claude
Not Supported
Claude Code
Not Supported
Codex CLI
Not Supported
Cursor
Not Supported
Git
Not Supported
GitHub
Supported
GitHub Student Developer Pack
Supported
Node.js
Not Supported
OpenAI Codex
Not Supported
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Integrations
Claude
Supported
Claude Code
Supported
Codex CLI
Supported
Cursor
Supported
Git
Supported
GitHub
Not Supported
GitHub Student Developer Pack
Not Supported
Node.js
Supported
OpenAI Codex
Supported
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