OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners TBD 46785 participants
OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8640 participants
Meta Horizon Creator Competition: Open Source Champions Online Compete for a share of $1M in prizes, plus an additional $500K in prizes for newly introduced mini-challenges. $1,500,000 in prizes Winners announced 1210 participants
