$10K
Prize Pool
Oct 31 – Nov 1
Duration
San Francisco, CA
Location
TBA
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About this hackathon
STRANGER BUILDS 🎃 The nerdiest Halloween hack ever. This is the San Francisco edition of Stranger Builds. Frontier Tower, Saturday 31 October, 10:00 to 18:00. ...what will you bring to life? Find your first users in 7 days. Meet other builders, build something strange, and get real people using it. USD 10K IN PRIZES AND CREDITS. FOUR CHALLENGES, UNLOCKED WHEN YOU START. 🔥 HOW IT WORKS ⚡ Saturday 31 October: one day in person in San Francisco, Melbourne or Bangalore, or online from anywhere. ⚡ On Saturday, go to strangerbuilds.com and hit the button to start: you sign the pact with the Duck and you're in. ⚡ Then seven days online to ship, until Sunday 8 November. ⚡ Meet the other builders and the sponsors' teams now: strangerbuilds.com/slack BACKED BY 🟠 Base44, Main Sponsor. Describe an app in plain words and get a working one, with backend, auth and hosting built in. base44.com 🟢 Fetch.ai, Main Sponsor. Build AI agents that find each other and get things done. fetch.ai 🔵 Vonage. APIs for messaging, voice and video inside your app. vonage.com 🦀 Shelled AI, Community Partner. Design, build, test and ship software with any AI model. shelled.ai 🦘 MLAI AUS, Community Partner (Melbourne). Our partner in Melbourne. mlai.au NERD COMMUNITY PARTNERS 🤓 The communities bringing their builders to Stranger Builds: 🤓 Cerebral Valley: SF's technical AI community, behind some of the biggest AI hackathons and model launch nights. 🤓 The AI Collective: local AI meetups and salons in 100+ chapters around the world. 🤓 Crewbase Collective: hackathons, workshops and builder events across San Francisco. 🤓 Bond AI: the in-person AI community, with builder events from SF to London. 🤓 Women in AI: the global nonprofit closing the gender gap in AI. 🤓 Get on Board: Latin America's tech talent community. 🤓 TalentLabs: tech careers, courses and hiring events across Asia. Run a builder community? Bring it to Stranger Builds. 👀 Judge announcements are coming. Want to judge or sponsor? Get in touch: hey@nerdconf.com Join the other editions: Melbourne 👉 https://luma.com/brg6yp1r Online 👉 https://luma.com/wn16tj6m NERDCONF runs hackathons in San Francisco and around the world, with a global network of 25K+ builders. The last one was Burning Token, September 2026, San Francisco and online.