Callum O'Prey (callumoprey)

Belfast, Northern Ireland, United Kingdom

Google Cloud Rapid Agent Hackathon

Online

Building Agents for Real-World Challenges

$60,000 in prizes
Winners TBD
14497 participants

Gemini 3 Hackathon

Online

Build what's next

$100,000 in prizes
Winners announced
35556 participants

InnovArt 2026: Art and Technology Hack Day

Online

Hack your artistic intelligence! Demonstrate your talent and showcase your hack for the arts.

Non-monetary prizes
Winners announced
338 participants

OpenAI Open Model Hackathon

Online

Build with gpt-oss, OpenAI’s open weight reasoning models.

$30,000 in prizes
Winners announced
8643 participants