xAI Hackathon 2025 Palo Alto, CA, USA Join us for a 24-hour hackathon to build the next generation of AI applications Non-monetary prizes Dec 7, 2025 352 participants
The UX/AI Hackathon Hillsborough, CA, USA Revolutionizing User Interfaces $3,000 in prizes Sep 16, 2023 61 participants
HackAIthon by Craft Ventures San Francisco, CA, USA Join us for a 3-day hackathon using the latest AI tools, plugins, and prompts. $24,369 in prizes May 15 – 18, 2023 200 participants
AI SF San Francisco, CA, USA Join 1000+ builders in San Francisco for a week of hacking, curated mixers, exclusive workshops, and a full-day summit to end it off. $34,000 in prizes May 15 – 17, 2023 83 participants
GPT Plugins (S)Hackathon San Francisco, CA, USA Built GPT Plugins $17,500 in prizes Apr 16, 2023 100 participants
TechCrunch Disrupt SF Hackathon 2019 San Francisco, CA, USA SAN FRANCISCO, OCT 2-4, 2019 $142,025 in prizes Oct 2 – 4, 2019 496 participants
hack Cupertino 2018 Cupertino, CA, USA A 13-hour overnight hackathon designed to solve a problem relevant to the City of Cupertino $437 in prizes Apr 14 – 15, 2018 51 participants
PioneerHacks Cupertino, CA, USA Hackathon open to all high schoolers in the Fremont Union High School District regardless of coding experience (with lots of workshops, food/swag, and prizes)! $18,425 in prizes Mar 17, 2018 46 participants
MenloHacks III Atherton, CA, USA MenloHacks is back, bigger and better than ever before. $14,501 in prizes Mar 10 – 11, 2018 80 participants
Firebird Hacks Fremont, CA, USA Innovative, Inspiring, and Revolutionizing $25,010 in prizes Nov 4 – 5, 2017 35 participants
GunnHacks 4.0 Palo Alto, CA, USA Make, Build, Create & Learn. It’s GunnHacks 4.0, Gunn’s 24-hour high school hackathon. Non-monetary prizes Oct 27 – 28, 2017 74 participants
Mountain View Hacks Santa Clara, CA, USA 1 Day, 120 Hackers - Bay Area High School Hackathon $14,910 in prizes Oct 21, 2017 99 participants
MHacks Nano Online Students from across the world come to MHacks to build amazing things, transform dreams into realities, and to meet others with the same level of passion to build their future. MHacks is for creators. $990 in prizes Winners announced 113 participants
<hack> Cupertino Cupertino, CA, USA A 13-hour overnight hackathon designed to solve a problem relevant to the City of Cupertino $640 in prizes Apr 8 – 9, 2017 52 participants
MenloHacks II Atherton, CA, USA MenloHacks is back. $3,776 in prizes Mar 17 – 18, 2017 47 participants
Los Altos Hacks II Redwood City, CA, USA Los Altos Hacks II is here! $1,750 in prizes Feb 4 – 5, 2017 185 participants