Tech to Treasure Hackathon San Jose, CA, USA Code for a greener future. $450 in prizes Mar 3 – 10, 2027 80 participants
Cal Hacks 13.0 San Francisco, CA, USA This year's Cal Hacks is presented by Anthropic, Annapurna Labs, Spacetime, and Hyphenate! Together we'll assemble in SF for a weekend of hacking, friendship, and crazy ideas. $159,822 in prizes Oct 23 – 25, 2026 1917 participants
Build with Gemini XPRIZE Online $2,000,000 in prizes. Build with Gemini. Ship products that impact the world. $2,000,000 in prizes Winners announced 26399 participants
Global AI Hackathon Series with Qwen Cloud Online Build your own AI Agent on Qwen Cloud - compete for $70K in prizes across five tracks. $45,000 in prizes Winners announced 8437 participants
Reddit’s Games with a Hook Hackathon Online Join Reddit and Phaser to build incredible games for the Reddit community! $40,000 in prizes Winners announced 3062 participants
Slack Agent Builder Challenge Online Whether it's your first agent or your fiftieth - Slack is where it ships. $42,000 in prizes Winners announced 4406 participants
The Vakathon San Ramon, CA, USA Vakathon is an 8-hour inclusive hackathon for all skill levels. Work solo or in teams of up to 4. Bring your laptop, charger, and hardware to learn, network, and build. $1,000 in prizes Jul 11, 2026 95 participants
