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Codewars vs LeetCode: catalog facts
Codewars	LeetCode
Freemium Free to join; Codewars Red is an optional paid subscription.	Freemium Many problems are free; a paid Premium subscription is offered.
Web	Web
Over 55 programming languages supported Solve and test code in the browser	Large set of algorithm and data structure problems Solutions are written and run in the browser
Challenge quality varies since kata are community-written Focuses on small exercises rather than larger projects	Focused on puzzle-style problems rather than building real projects Requires an internet connection
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.