SVYCA Youth for Earth (Y4E) Hackathon
Silicon Valley Youth Climate Action · Stanford University, Stanford
29-day build with a submission deadline; $2,700 prizes.
Open$2,700 prizes
The Bay Area hackathon calendar
Everything worth building at,
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Every hackathon across San Francisco and the wider Bay Area, kept current morning and evening. Subscribe once and the next one finds you — no more combing through invite links and half-dead group chats.
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September 2026
Startup Speedrun Hackathon
Brainbase Labs · Cloudflare, San Francisco
8-hour build with judging, team formation; $27.5k+ prizes.
Open$27.5k+ prizesBuild Your AI Co-Founder Hackathon
David Mumuni · 3120 Scott Blvd, Santa Clara
10-hour build with judging, demos, team formation; prizes listed.
ApprovalPrizes listedBuild Your AI Co-Founder Hackathon
David Mumuni · 3120 Scott Blvd, Santa Clara
10-hour build with judging, demos, team formation; prizes listed.
OpenPrizes listedBuild Your AI Co-Founder Hackathon
David Mumuni · 3120 Scott Blvd, Santa Clara
10-hour build with judging, demos, team formation; prizes listed.
ApprovalPrizes listedAgentic AI Hackathon: AWS Community Day Bay Area 2026
AWS Community Bay Area · AWS Builder Loft, San Francisco
15-day build with judging, demos, team formation, a submission deadline; $3,200 prizes.
Open$3,200 prizesAI Agents for Data Teams: A Practical Mini-Hackathon
Bay Area Snowflake User Group · 135 Constitution Dr, Menlo Park
3-hour build with team formation.
OpenCollaborative Agent Hackathon @ Stanford
Flower Labs · 389 Jane Stanford Way, Stanford
10-hour build with judging, demos, team formation; $5,000 prizes.
Open$5,000 prizesThe AI Conference Hack Day 2026
[SF] HackerSquad · Mission Bay, San Francisco
10-hour build with demos, team formation; prizes listed.
OpenPrizes listedAI Security Engineering Hackathon
RocketRide · AWS Builder Loft, San Francisco
5-hour build with judging, team formation, a submission deadline; $10,000 prizes.
Approval$10,000 prizesRebuild With Jev #3: Decision Bot Architecture + Hackathon
PromptQL Events · San Francisco
3-hour build with judging, demos, team formation.
Sold outMission Applied: Maritime Dual-Use Mixer
Berkeley Gateway Accelerator · Berkeley
2-hour build with judging, team formation.
ApprovalFix My Agent: Make Your Agent Production-Ready | AI Valley × PostHog × GMI Cloud
AI Valley · San Francisco
3-hour build with demos, team formation.
ApprovalEMBEDDED SF: CraftifAI Physical AI Hackathon
Devnovate · San Francisco
10-hour build with demos, team formation; $1,000 cash.
Approval$1,000 cashWomen Build Oakland: From Idea to App in One Day
CoCo Noir Labs Calender · Oakland
9-hour build with judging, team formation; prizes listed.
Sold outPrizes listed- Check page
Big Earth Hackathon Guest Speaker Session: Andy Abranches (PG&E)
Stanford Big Earth Hackathon · Stanford
1-hour build.
OpenPicnic with Builders at Stanford
SF Startup Labs · Stanford University, Stanford
2-hour build with team formation.
Approval- Open
October 2026
ApprovalOakland Tech Week: The Future of Oakland
Hack the Hood Community · Oakland
2-hour build with demos, team formation.
ApprovalSF Hacks × GDG AI Hackathon 2026
Daksh Kumar · Student Life Events Center / Annex I, San Francisco
10-hour build with demos, team formation; prizes listed.
OpenPrizes listedReal-Time Video Agents Hack - SF
tokens& · San Francisco
10-hour build with judging, demos, team formation; prizes listed.
OpenPrizes listedHack the Feed: Creator Tools Hackathon with Oriane, GMI Cloud & Lovable at Amplitude HQ!
Oriane.xyz Video Intelligence · Amplitude Analytics, San Francisco
5-hour build.
Sold outBig Earth Hackathon Workshop: Google Earth Engine
Stanford Big Earth Hackathon · Stanford
2-hour build.
OpenThe Hidden Genius Project | Oakland Tech Week Youth Hackathon 2026
eventbrite.com · Henry J. Kaiser Center for the Arts, Oakland
24-hour build with judging.
Check pageDublin Hacx
Emerald High School · SAP Office — San Ramon, CA, San Ramon
2-day build with a submission deadline; $2,250 prizes.
Check page$2,250 prizesStanford Hub - 7th Hack-Nation Global AI Hackathon
Hack-Nation's Global AI Hackathons · Palo Alto
23-hour build with judging, team formation, a submission deadline; $30k+ cash.
Open$30K+ cashThe Multiplayer Coding Hackathon
Coshell · Mission District, San Francisco
9-hour build with judging, team formation; $500 prizes.
Open$500 prizesThe AI Commerce Gallery - Hackathon | Walt Disney Family Museum
AI Valley · San Francisco
12-hour build with judging, demos, team formation, a submission deadline; prizes listed.
OpenPrizes listedSupabase Select 2026 Hackathon
Supabase Community Events · Central Waterfront, San Francisco
8-hour build.
OpenHack-Nation 7th Global AI Hackathon
Hack-Nation's Global AI Hackathons · Downtown North, Stanford
2-day build with judging, team formation, a submission deadline; $30k+ cash.
Approval$30K+ cashBubble Lab (YC W26) X Lunatechs - Pretty Cool Demos and Pre-Tech Week Social!
Lunatechs San Francisco · European Startup Embassy, San Francisco
4-hour build with demos, team formation; prizes tba.
ApprovalPrizes TBABig Earth Hackathon Guest Speaker Session: Seth Schalet (Santa Clara FireSafe Council)
Stanford Big Earth Hackathon · Santa Clara
1-hour build.
ApprovalBig Earth Hackathon Guest Speaker Session: David Shew (Wildfire Defense Works)
Stanford Big Earth Hackathon · Stanford
1-hour build.
ApprovalPax Silica Hackathon: SF Tech Week
Builderbase Hackathons · 2 Embarcadero Ctr, San Francisco
3-hour build with demos, team formation.
Open#SFTechWeek 5-Dee Hacks : Agency - Human Flourishing
5-Dee Studios · San Francisco
6-hour build with demos, team formation; prizes listed.
ApprovalPrizes listed- Check page
- Approval
Everesteer Hedge Fund Hackathon: San Francisco #SFTechWeek
Everesteer · 11 Pearl St, San Francisco
5-hour build.
Check pageCode. Fix. Drink. Repeat. with WeAreDevelopers & Snyk
WeAreDevelopers · 260 California St suite 600, San Francisco
3-hour build with demos, team formation; prizes listed.
OpenPrizes listed- Open
AI Native Summit - SF TechWeek 2026
PAI Palooza Presents - Build with AI Native Studio - 2026 · 847 Howard St, San Francisco
2-day build with team formation; $25,000 prizes.
Open$25,000 prizesAI-Native Startup Hackathon
BondHaus · San Francisco
10-hour build with judging, demos, team formation.
Open#SFTechWeek - Decision-Grade AI @ Stanford ⚡️ A Buildathon on LLM Trust
ezio · Industrious Palo Alto Page Mil, Palo Alto
2-hour build with a submission deadline.
Check pageAI-Native Startup Hackathon | #SFTechWeek
Tech Events SF | BridgeUs · Lower Haight, San Francisco
11-hour build with judging, demos, team formation.
OpenMulti Model Hackathon - #SFTechWeek
Builderbase Hackathons · Frontier Tower 🧑🚀, San Francisco
9-hour build with demos, team formation.
OpenTech Week Hackathon
Frontier Tower SF · Frontier Tower @ Spaceship 995 Market Street, San Francisco, SF
10-hour build.
Check pageBuild AI agents that own their inference - #SFTechWeek
[SF] HackerSquad · AWS Builder Loft, 2nd Floor, 525 Market St, SF
9-hour build with judging, demos.
ApprovalBig Earth Hackathon Guest Speaker Session: Joaquin Ramirez (Technosylva)
Stanford Big Earth Hackathon · Stanford
1-hour build.
OpenCompany Brain Hackathon: Build an AI Agent That Knows Your Organization
TechEquity Ai - Silicon Valley · 135 Constitution Dr, Menlo Park
4-hour build with judging, demos, team formation.
OpenAWS Community Day - AI Edition
AWS Community Bay Area · AWS Builder Loft, San Francisco
10-hour build with demos, team formation; $3,200 prizes.
Open$3,200 prizes- ApprovalPrizes listed
FAST FORWARD
Vercel Events · San Francisco
8-hour build with judging, demos, team formation, a submission deadline.
OpenSF Frontier Hackathon: Build your Autonomous Code Factory
Obvious Community Events · San Francisco
10-hour build with demos, team formation; $30k prizes.
Approval$30K prizesBig Earth Hackathon Guest Speaker Session: Wei-ting Chen (Stanford Community Engagement)
Stanford Big Earth Hackathon · Stanford
1-hour build.
OpenVenture Night@TechCrunch Disrupt 2026 – The Ultimate Startup & Investor Experience!
TechEmbassy · FOCUS Innovation Studio, San Francisco
3-hour build with judging, team formation; $25,000 prizes.
Check page$25,000 prizes- OpenPrizes listed
Maritime Dual-Use Hackathon
Mind the Bridge · Mind the Bridge, San Francisco
2-day build with judging, team formation, a submission deadline; prizes listed.
OpenPrizes listedArm + ExecuTorch: Edge AI Challenge
arm · San Francisco State University, San Francisco
2-day build with a submission deadline.
Check pageMake Something Agents Want
YC · San Francisco
2-day build with judging, demos, team formation, a submission deadline; $3,000 cash.
Open$3,000 cashExecuTorch Hackathon
[SF] HackerSquad · Founders, Inc. | San Francisco Lab, San Francisco
2-day build with demos, team formation; prizes listed.
ApprovalPrizes listedUniversal Hackathon - Create Your Own AI Workforce | AWS Builder Loft
Medallion XLN Events · AWS Builder Loft, San Francisco
11-hour build with demos, team formation.
Check page- Check page
AI Startup Challenge Hackathon: The Pre-Event of SF AI Summit
Devnovate · San Francisco
10-hour build with judging, demos, team formation, a submission deadline; prizes listed.
ApprovalPrizes listedStartup Sprint: Prove you're fundable
Proving Ground · Palo Alto
3-day build with judging, team formation, a submission deadline; prizes listed.
ApprovalPrizes listedMulti-Model Hackathon @AWS Builders Loft
Beta University Events · San Francisco
9-hour build with judging, demos, team formation; prizes listed.
ApprovalPrizes listed- Check page
Personalized Medicine Builders: Demos, Discussion and Social
Research to the People Patient Hackathons · 81 Langton St, San Francisco
2-hour build with demos.
ApprovalKane CLI Hack Day, supported by OpenAI
Personal · Financial District, San Francisco
11-hour build with judging, demos, team formation, a submission deadline; $30,000+ prizes.
Open$30,000+ prizesLocal Align #3 — AI × GTM Growth Hackathon & Social
Local Align · Santa Clara
6-hour build with judging, demos, team formation.
OpenDell x NVIDIA Hackathon
Frontier Tower SF · Frontier Tower @ Spaceship 995 Market Street, San Francisco, SF
10-hour build.
Check page- Open
The Builder Base: Buildathon
Devnovate · San Francisco
8-hour build with demos, team formation; prizes listed.
ApprovalPrizes listedNovember 2026
TechEquity Ai Summit 2026: Talks + AI Agent Workshops
TechEquity Ai - Silicon Valley · 135 Constitution Dr, Menlo Park
4-day build with demos.
Check pageCompany Brain Hackathon: Build an AI Agent That Knows Your Organization
TechEquity Ai - Silicon Valley · 135 Constitution Dr, Menlo Park
7-hour build with judging, demos, team formation.
OpenHackStorm 3.0: Sense, Think and Act
HackStorm · San Francisco, California, USA, San Francisco
3-day build with a submission deadline; $5,200 prizes.
Check page$5,200 prizes- Open
AI Tutor Hackathon
Beta University Events · Stanford
8-hour build with demos, team formation, a submission deadline; prizes listed.
ApprovalPrizes listed- Check page
HackwithBay 4.0
Devnovate · AWS Builder Loft, San Francisco
9-hour build with demos, team formation, a submission deadline; prizes listed.
ApprovalPrizes listed- Approval
December 2026
Agentic AI Hackathon 2.0 - SF
Devnovate · AWS Builder Loft, San Francisco
9-hour build with demos, team formation; prizes listed.
ApprovalPrizes listedODSC AI x NEBIUS | Hackathon
eventbrite.com · Hyatt Regency San Francisco Airport, Burlingame
24-hour build.
Check pageJanuary 2027
⚕️ HealthTech Week ⚕️ Startup Pitch Competition (@JPM) in Partnership MedStartr
⚕️SF HealthTech Week⚕️ Events · The Foundry SF, San Francisco
3-hour build with judging, demos.
OpenDeveloperWeek 2027 Hackathon
DevNetwork · Santa Clara Convention Center + Online, Santa Clara
18-day build with a submission deadline; $5,000 prizes.
Check page$5,000 prizesDeveloperWeek 2027 Hackathon
eventbrite.com · Santa Clara Convention Center, Santa Clara
18-day build.
Check pageFebruary 2027
Check page