kazutoshi hayashi (cal29792979)

日本

Kiroween 2026

Featured

Online

Build something wicked and git commit to the darkness.

$100,000 in prizes
Submissions open soon
1733 participants

Meta VR Start Developer Competition 2026

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Online

Accelerate your VR development journey with Meta VR Start and compete for $1M in cash prizes

$1,000,000 in prizes
Nov 18, 2026 03:00 PM EST to submit
4254 participants

PayPal AI Hackathon

Online

Build what’s next with PayPal and AI

$67,500 in prizes
Nov 12, 2026 03:00 PM EST to submit
22842 participants

Learn AR with SPECS

Online

Learn to design for glasses. Your coding agent builds the Lens, no SPECS required.

$2,500 in prizes
Nov 09, 2026 05:00 PM EST to submit
864 participants

Codex x TwitchCon Hackathon

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Online

Build for streamers and their community on Twitch with OpenAI Codex. $25,000 in prizes, and the top 5 are shown on the Codex Booth stage at TwitchCon.

$25,000 in prizes
Nov 02, 2026 05:00 PM EST to submit
1345 participants

YouCam API Skin AI & eCommerce VTO Hackathon

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Online

Build with the YouCam API to Shape the Future of Skincare, Beauty, Fashion and eCommerce - Compete for Top Prizes

$6,000 in prizes
Nov 02, 2026 11:45 AM EST to submit
1360 participants

Nebius x NVIDIA Global AI Hackathon

Online

Build the next frontier of AI on open infrastructure

$50,000 in prizes
Oct 30, 2026 01:00 PM EDT to submit
28376 participants

Life After Code

Online

The path to production at the speed of imagination

$45,000 in prizes
Winners TBD
3332 participants

OpenAI Build Week

Online

Join a global week of building with Codex

$100,000 in prizes
Winners announced
46670 participants