All events / Claude, Cursor, Codex and Kiro hackathons

Claude, Cursor, Codex and Kiro hackathons

There are 25 hackathons and build days for Claude, Cursor, Codex or Kiro on BuildJams right now. Events are included when the name mentions Claude, Cursor, Codex or Kiro, when a search for the tool on Devpost matches the listing, or when it is on that tool's community calendar. Many are local build days run by community groups. 4 can be entered online.

Updated Oct 19, 2026 (UTC). Sources for this list: Devpost, Cerebral Valley, Kiro and Luma. Check the official page before you enter.

Build With AI: Basics $2,500
Devpost · Online · Team rules: see official page
Cash prize Closes Oct 26, 2026 Devpost
CSC Winter Sparkathon $100
The Webb Schools CSC · Online · Team rules: see official page
Upcoming Cash prize Starts Oct 29, 2026 Devpost
Kiroween 2026 $100,000
Kiro · Online · Team rules: see official page
Upcoming Cash prize Starts Oct 30, 2026 Devpost
Built with Claude: Japan 2026 See official page
Cerebral Valley, Anthropic · Online · Team rules: see official page
Upcoming Starts Nov 2, 2026 Cerebral Valley
HarborHack 2026 - Agent In The Loop $1,500
Charlestonhacks · In person (College of Charleston, Harbor Walk) · Team rules: see official page
Upcoming Cash prize Starts Oct 23, 2026 Devpost
LarpHacks $21,394
larphacks · In person (Toronto) · Team rules: see official page
Upcoming Cash prize Starts Nov 1, 2026 Devpost
Intelligence at Work Hackathon See official page
Snowflake, Anthropic · In person (Menlo Park, CA, US) · Team rules: see official page
Upcoming Starts Oct 23, 2026 Cerebral Valley
DevDay Community Hackathon: Berlin See official page
Codex Community Events · In person (Berlin, Germany) · Team rules: see official page
Upcoming Starts Oct 24, 2026 Luma
Miami | Claude Code Hacknight See official page
Claude Community Events · In person (Miami, FL) · Team rules: see official page
Upcoming Starts Oct 27, 2026 Luma
Cursor x Sandbox Hackathon | Stuttgart See official page
SpaceXAI for Stuttgart, Germany · In person (Stuttgart, Germany) · Team rules: see official page
Upcoming Starts Nov 7, 2026 Luma
Cursor Hackathon Kampala See official page
SpaceXAI for Kampala, Uganda, Africa · In person · Team rules: see official page
Upcoming Starts Nov 14, 2026 Luma
Cursor Hackathon Tallinn See official page
SpaceXAI for Estonia · In person (Tallinn, Harju maakond) · Team rules: see official page
Upcoming Starts Nov 19, 2026 Luma
Cursor Hackathon Jimma See official page
SpaceXAI for Addis Ababa, Ethiopia, Africa · In person (Jimma, Ethiopia) · Team rules: see official page
Upcoming Starts Nov 21, 2026 Luma

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