Cerebral Valley — AI Hackathon Series (SF, 2026-27 ongoing)
📅 Wednesday, 1 July 2026 → Friday, 31 December 2027 in 577 days
SF-based AI hackathon series with frequent flagship events drawing 500+ attendees and $100K+ prize pools. Recent flagships: OpenEnv Hackathon (March 2026, w/ PyTorch — RL environments + post-training base models, judges from Meta, Hugging Face, UC Berkeley, Scale AI, Cursor, CoreWeave); 2026 National Security Hackathon (Shield Capital + Palantir + OpenAI + Scale AI + Armada + Deloitte). Most events held at HF0 Founder Community (Archbishop's Mansion), Shack15, or partner venues. Cloud credits typically provided by OpenAI, Anthropic, Azure ML, GCP.