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,
gathered in one place.
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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/calendar.icsWhat’s coming up
September 2026
The AI Conference Hack Day 2026
[SF] HackerSquad · Mission Bay, San Francisco
10-hour build with demos, team formation; prizes listed.
ApprovalPrizes listed- Check page
Rebuild With Jev #3: Decision Bot Architecture + Hackathon
PromptQL Events · San Francisco
3-hour build.
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.
ApprovalWomen 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 listedAgent Hackathon
Solana San Francisco · San Francisco
8-hour build with judging, demos, team formation; $1500 prizes.
Approval$1500 prizesBig Earth Hackathon Guest Speaker Session: Andy Abranches (PG&E)
Stanford Big Earth Hackathon · Stanford
1-hour build.
ApprovalPicnic with Builders at Stanford
SF Startup Labs · Stanford University, Stanford
2-hour build with team formation.
ApprovalAgentic 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 prizesOctober 2026
Silicon Valley Build Day | Physical AI for Anyone
Echo Gao · Plug and Play Tech Center, Sunnyvale
2-hour build with judging.
Approval- Approval
Oakland Tech Week: The Future of Oakland
Hack the Hood Community · Oakland
2-hour build with demos, team formation.
Approval- Sold out
SF 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 listed- Open
Hack 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.
Open- Open
The 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.
Sold out$30K+ cashThe 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 listedThe Multiplayer Coding Hackathon
Coshell · Mission District, San Francisco
9-hour build with judging, team formation; $500 prizes.
Approval$500 prizes- Open
Bubble 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 TBABuild Your First App with AI
NextGenInitiative Silicon Valley · Silkroad Innovation Hub, Menlo Park
2-hour build with judging, demos; prizes listed.
OpenPrizes listedBig Earth Hackathon Guest Speaker Session: Seth Schalet (Santa Clara FireSafe Council)
Stanford Big Earth Hackathon · Santa Clara
1-hour build.
ApprovalModel Training Night by Overmind, Daytona & Doubleword #SFTechWeek
Overmind · House of AI, San Francisco
4-hour build with judging, team formation; prizes listed.
OpenPrizes listedBig 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 listedAI Hackathon: Sales Copilot AI
TatianaSF · Northern Waterfront, San Francisco
8-hour build with judging, demos, team formation; prizes listed.
OpenPrizes listed- 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- Check page
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 prizesFind a Cofounder, Help or Join a Tech Startup
Startup Oasis · San Francisco
3-hour build with team formation; prizes listed.
OpenPrizes listed#SFTechWeek - Decision-Grade AI @ Stanford ⚡️ A Buildathon on LLM Trust
ezio · Industrious Palo Alto Page Mil, Palo Alto
24-hour build with a submission deadline.
Check pageAI-Native Startup Hackathon
BondHaus · San Francisco
10-hour build with judging, demos, team formation.
OpenAI-Native Startup Hackathon | #SFTechWeek
Tech Events SF | BridgeUs · Lower Haight, San Francisco
11-hour build with judging, demos, team formation.
ApprovalMulti Model Hackathon - #SFTechWeek
Builderbase Hackathons · Frontier Tower 🧑🚀, San Francisco
9-hour build with demos, team formation.
ApprovalTech Week Hackathon
Frontier Tower SF · Frontier Tower @ Spaceship 995 Market Street, San Francisco
10-hour build.
OpenBuild 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.
OpenCompany Brain Hackathon: Build an AI Agent That Knows Your Organization
TechEquity Ai - Silicon Valley · 135 Constitution Dr, Menlo Park
4-hour build.
OpenEMBEDDED SF: CraftifAI Physical AI Hackathon
Devnovate · San Francisco
10-hour build with demos, team formation; $1,000 cash.
Approval$1,000 cashAWS 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- ApprovalPrizes 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 cashThe Recursive Agents Hackathon
Cerebral Valley · San Francisco
13-hour build with team formation; $25,000 cash.
Open$25,000 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.
Open- 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.
Approval$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
10-hour build.
Open- 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 pageHackStorm 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 prizesFebruary 2027
Check page