OpenAI Open Model Hackathon Online Build with gpt-oss, OpenAI’s open weight reasoning models. $30,000 in prizes Winners announced 8654 participants
A2A - Agents Hackathon San Francisco, CA, USA Creators Corner invites you to turn bold ideas into action with an exclusive A2A hackathon. Join us to build AI agents that push the limits of LLMs and AI applications! $4,500 in prizes Jul 26, 2025 129 participants
