Cal Hacks 12.0 @ the Palace of Fine Arts in SF, October 24-26! π§Έπ Empowering students to build w/o boundaries @ UC Berkeley!
UC Berkeley
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π Applications for the worldβs largest in-person AI Hackathon are OPEN!
π June 20β21, 2026
π UC Berkeley
Join us for 24 hours of hacking, building, and connecting with top companies.
Apply now: ai.hackberkeley.org/
Priority deadline: Apr 26
Final deadline: May 17
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Thrilled to announce that @UCBerkeley alum and @Apple co-founder Steve Wozniak will be joining us on Friday as our opening keynote speaker! π
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Cal Hacks is taking over the city!
So excited to announce that we're expanding to SF! Our dates are tweaked to 10/15-16 for an epic 24h of hacking!
The world's biggest collegiate hackathon just got bigger, and we can't wait to make history with you. Submit your app today! π
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Cal Hacks stands in solidarity with the Black Lives Matter Movement. Our world is failing to empower the black community, and we as members of the tech community must use our platform to act upon it now more than ever.
No justice, no peace.
#BlackLivesMatter
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We've been waiting for this oneπ₯
We're proud to present Hack Month, a new month-long event in October where @UCBerkeley students can come together & bring their passion projects to life, without the competition/pressures of a traditional hackathon!
hackmonth.calhacks.io
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β° 40 hours
π» 24 giant teddy bears
π over 200 AMAZING sponsors & mentors
π 250 competing hacks
π₯ and over 2000 of the BEST hackers in the world.
#CalHacks 5.0 was a weekend to remember, and most certainly the best Cal Hacks yet. We can't wait to see you again for 6.0 β€οΈ
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This message we got in our hack:now Slack EASILY just made us the happiest student organization at UC Berkeley π€©
Congrats to all #berkeleybound transfer students!
ππ»π
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Build something out of this world! ππ
Cal Hacks is proud to present hello:world, a 36-hour, online hackathon to connect the next generation of creators, innovators, and leaders around the world.
π April 16-18, 2021
π» helloworld.calhacks.io/
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Aaaaaaaaaand #CalHacks 6.0 is a wrap! Thank you so much to every hacker, volunteer, sponsor, director, and partners that made another incredible weekend possible against some crazy odds, and we absolutely canβt wait to be back next year πβ€οΈπ₯
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Hey @elonmusk what would it take for you to bring these moves live to our hack:now closing ceremony? πΊπ»π€ π₯Ί
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~$ ππ -π πππ_πππππ/
./ ../
π ππππππππ/ ππππ£ππ/
πππππππ/ ππ ππ/ πππππππ/
ππππππππ/ πππππ/
~$ ./πππ’π_ππππ.ππ
πΏ
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Did you guys hear? We are currently hosting the single largest day of student hacking EVER in the world. #breakingrecords
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If you're reading this...
YOU'RE INVITED TO CAL HACKS 10.0!
--
Spend the weekend of 10/27-10/29 with us at the Metreon in SF, experience the worldβs biggest collegiate hackathon reaching DOUBLE DIGITS, and learn from our amazing co-host @MindsDB π»π!
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Introducing our MC for #CalHacks6, @davefontenot!
Dave created @mhacks and is a pioneer of megahackathons like Cal Hacks, and will be running our opening ceremony.
What better way to amp up for a weekend of building the best hackathon projects of your life?
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hack:now is hack:DONE β
A HUGE thank you to all the judges, mentors, sponsors, and hackers that made this weekend possible π
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Thanks to all of our hackers, volunteers, mentors, & sponsors for making this event one for the books β€οΈ See you next year at Cal Hacks 4.0!
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This is not a hackathon. It's your project, at your pace. π
Update your portfolio, build up your resume, or prototype a startup idea β Hack Month is your opportunity to bring your vision to life! π€©
π‘ Apply at links.calhacks.io/hackmonth_β¦
π Learn more at hackmonth.calhacks.io
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You all probably saw this one coming, but due to the ongoing COVID-19 pandemic & for the sake of hacker safety, we will not be holding Cal Hacks 7.0 this fall.
Even though we won't see you all for a while, we hope you keep on building! π»π»
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Aaaand we're live! π₯³
In response to our current circumstances, Cal Hacks is launching hack:now, a 36-hour online hackathon for students wanting to tackle some of the challenges faced around the current Coronavirus (COVID-19) pandemic.
Check us out at hacknow.calhacks.io
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2 More Days Until Cal Hacks 11.0! Check out our opening ceremony livestream linked here: piped.video/live/GZBo6ofGySU
We will be going live this Friday, October 18th, at 4:00PM, featuring our very special keynote speaker: Aravind Srinivas, the CEO of Perplexity!
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We can't believe it, but in less than 24 hours we've surpassed way beyond $1000 in donations you've all shared with us!
THANK YOU for using your platforms to support a greater cause π
We're excited to start matching them ASAP. We'll keep you all updated π
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.@CalHacks @YaleHack
@TheHackGT @MA_Hacks
@angelhacks_la
π€
all deciding to do this
on the same damn weekend
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#ItsTimetoBuild, it's time to #hacknow!
Cal Hacks and Postman are coming together to launch hack:now, a global open-to-all online hackathon giving participants the opportunity to tackle immediate challenges posed by COVID-19.
π Register to hack at hacknow.calhacks.io
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Sending lots of love to Berkeley CodeBase and @calblueprint for doing some AWESOME work on our opening workshops ππ‘
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Cal Hacks 6.0 will continue fully as planned, and won't be affected by the power outage affecting some surrounding areas, thanks for your patience, everyone, and see you here soon! π
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CAL HACKS 11.0 IS HERE!
Apply at apply.hackberkeley.org!
π
When: October 18 - 20, 2024
π Where: Metreon in SF
β Who: All college/grad/university students
β³Priority Deadline: 9/22 11:59 PM PST
βοΈRegular Deadline: 9/30 11:59 PM PST
π₯οΈ Learn more at hackberkeley.org
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New look who dis ππ₯
hackmonth.calhacks.io
Stay tuned to hear about why we aren't just running another online hackathon π»
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Considering having Ahmed come show hackers at Cal Hacks how it's done. @IStandWithAhmed let's make this happen bc #IStandWithAhmed
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Speaker Series (2/3) π
Now presenting Michael Seibel, Managing Director @ YCombinator!
Michael Seibel is a Managing Director at Y Combinator and co-founder of two startups β Justin.tv and Socialcam.
Register now:
helloworld.calhacks.io/apply
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Just ordered five thousand dollars' worth of [redacted swag item] for Cal Hacks 6.0 π»
The bank literally called us to check if we were ok ordering so many [redacted swag item]s.
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And just like that 36 hours of hacking with 4 weeks of planning have flown by! βοΈ
π©π½βπ» 2500+ participants
π 225+ hacks
π 100+ countries
π¨πΌβπ« 90+ mentors
π€ 28 sponsors
β° 36 hours
π 4 weeks total organizing time
and a COVID-19 panel, Woz keynote, Cal MC server, and more!
So proud of the @CalHacks team for hosting an amazing virtual hackathon -- hack:now! π
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Congrats π to Cal Hacks Fellowship 5.0 company DeWaste on their YC Startup School grant!
ππ
Congratulations to our @startupschool 2019 grant recipients! blog.ycombinator.com/announcβ¦
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Surprise! We're baaaaaaack~ π
Mark your calendars for October 22-24 because the world's largest (and coolest) collegiate hackathon is making a return!
π Apply by October 3rd: apply.calhacks.io
β° When: October 22-24
π Where: Online
π§βπ» Who: All US college students
ALT Cal Hacks 8.0 β October 22-24. Apply at apply.calhacks.io
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More announcements coming your way π₯π₯π₯
We're partnering with Postman as our official co-host for hack:now!
Postman is the leading collaboration platform for API development, used by 10 million developers across 500,000 organizations. Connect with Postman (@getpostman) π
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Thank you all for coming back to the hacks! We hope you had a great time and we look forward to seeing you next year at Cal Hacks 3.0!
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Bigger and better than ever. All majors and levels are welcome.Experience it all at Cal Hacks 12.0!
π«Apply at apply.calhacks.io
π
Oct 24-26
πPalace of Fine Arts, SF
βAll college students&grad students
Priority Deadline: 9/23 11:59 PM PST
Regular Deadline: 10/01 11:59 PM
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Sorry this happened! We're disappointed this happened at our event, and we've already taken appropriate action against that project.
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Some crazy news π
HUNDREDS of you applied for Hack Month in the past few hours, π€― so we're extending the deadline by 48 HOURS for those of you that might've missed it by a bit!
π [NEW DEADLINE] SUNDAY @ 11:59pm PDT
π Apply: links.calhacks.io/hackmonth_β¦
ALT Hack Month (9/20)
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Thatβs a wrap on our AI Hackathon! π»π€
Thanks to everyone who came out and made this event unforgettable. Until next timeβ¦
(Photo credit: @really_not_jake & @wallacelhtang on instagram)
#AIHackathon #ucberkeley #coding #ai #berkeley #computerscience #hackathon #Recap
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A big congrats to our #1 winning hack at 6.0, built on @Azure!
Congrats team Cosine, #Azure Champs @CalHacks for their #MachineLearning app to analyze legal documents & summarize the top 10 key points so users are better informed of details before signing. We had a great time & excited to see the innovation continue! msft.social/kQdRom
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LAST CALL: Cal Hacks is extending the app deadline to 10/2! Join the world's LARGEST collegiate #hackathon for 24 hours of hacking in SF. We canβt wait to see you there!
Apply NOW at: apply.calhacks.io
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UC BERKELEYβS AI HACKATHON IS HERE!
Apply at ai.hackberkeley.org!
π
When:June 21-22, 2025
πWhere:UC Berkeley MLK Student Union
β Who:All college/grad/university students
β³Priority Deadline:5/18 11:59 PM PST
βοΈRegular Deadline:5/30 11:59 PM PST
π₯οΈ ai.hackberkeley.org
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7.0 may be postponed but thatβs not stopping us π
Weβre looking for new directors to join our team and help pave the path forward for the future of hackathons & online events!
Apply by Sunday, Sept. 6th at links.calhacks.io/fall2020_aβ¦
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Hey @zoink + @figma + @figmadesign π
Figma plug ins are cool. Want 1200+ student hackers to compete to make the best one at a COVID-19 hackathon tomorrow? π€
COVID-19 has forced educators to overhaul the way they teach.
Starting today, weβre expanding the Figma for Education program beyond degree programs at accredited institutions to also include online courses, bootcamps, school-sponsored hackathons and virtual classrooms.
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Cal Hacks Spring 2021 recruiting is now in full swing! π»
We're looking for ambitious and dedicated directors to revamp the world's largest collegiate hackathon in a large-scale virtual hackathon experience this Spring!
Apply by Friday, Jan. 29th at buff.ly/3oU30hx
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π»π» BOO! Did we scare you? π³ππ It's October ππ»π and you know what that means π
It's time to celebrate the start of Hack Month! πππ
Tune in tomorrow for our Hack Month opening ceremony, featuring a VERY SPECIAL guest speaker.
RSVP: fb.me/e/3igiWjVrd
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Team Yellow π or Team Blue π?
We have some custom hack:now Zoom backgrounds for you to spice up your team's video work sessions or our workshop Zoom calls! π
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23 incredible founders, 7 teams, 12 weeks β watch the Cal Hacks Fellowship cohort take center stage! Register now to attend the Cal Hacks Fellowship 2021 Demo Day! We canβt wait to show off our moonshot startups π
π May 5th, 3-4:30PM
π» lu.ma/fellowshipdemoday
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Congrats π to Cal Hacks Fellowship 5.0 team DeWaste for qualify to Berkeley Impact Venture Partners' AMP accelerator next spring and $5k in funding!
ALT DeWaste sharing their story at Cal Hacks 6.0
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A HUGE thank you to everyone that's already emailed us showing your support for #BlackLivesMatter π€©
Remember your activism doesn't stop at donations! Get informed, educate your peers, become an advocate, and be an ally.
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ββ Cubstart is back! ββ
DeCal open to all @UCBerkeley students -- Build functioning web and iOS apps over a semester full of collaboration!
Infosessions RSVP: buff.ly/38NsJ5L
Apply by Friday, Jan. 29th: buff.ly/3qpXPX8
Learn more at buff.ly/2XKZKcD
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#CalHacks 5.0 is opening with a BANG next Friday with an opening talk by @mwseibel from @ycombinator! π
Michael is the CEO of YC and co-founder of two startups β Justin.tv and Socialcam. We can't wait to hear his stories of entrepreneurship and the tech industry.
ALT Michael Seibel, CEO of Y Combinator and Cofounder of Justin.tv and SocialCam, is the Opening Speaker at Cal Hacks 5.0
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βοΈ Join us in kicking off summer with a hackathon!
πApply now on ai.calhacks.io
β° When: Jun 17-18
πWhere: Martin Luther King Student Union Building
π§Who: All college students and recent graduates
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The world's LARGEST collegiate #hackathon is back!
Cal Hacks 9.0 = 36 hours of hacking packed with swag, game nights, & thousands in prizes! Have an idea? You can create it at Cal Hacks.
π Apply by 9/30: apply.calhacks.io
β° When: Oct 14-16
π§ Who: ALL #college students
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"Everything changed in November 2018 when my friend Jen and I entered Cal Hacks, Berkeleyβs annual hackathon ... for some reason that night, everything just felt so doable." - @tanthaip
πππ
medium.com/swlh/dropping-outβ¦
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πππ
@CalHacks at @UCBerkeley is returning for 6.0 this October 25-27! 36 hours of hacking, free food, lots of swag, the occasional silent disco or retro gaming, and of course their giant stuffed bears π»
If traveling outside Cali, apply by Sep 20! Apply at buff.ly/32HOwpQ
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ββ Cubstart is back & better than ever ββ
ICYMI: Our Cubstart series is now officially a Fall 2020 DeCal for all @UCBerkeley students!
Apply by Friday, Sept. 4th at links.calhacks.io/cubstart_aβ¦
Learn more at calhacks.io/cubstart π§Έ
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.@UCBerkeley students! Join the #CalHacks director team! We're a small, tight-knit group of undergrads across majors and years organizing the largest collegiate hackathon in the country this Octoberπ. You've got a week π»Go! calhacks.org/apply
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Feeling cute might delete later βοΈπ»#NewProfilePic
Sign up today for Hack Month π₯³links.calhacks.io/hackmonth_β¦
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Excited to announce that weβre partnering with @ycombinator for hack:now! π
YC will be offering prizes including summer mentorship for outstanding hacks & even a direct interview for a future YC batch to one winning team!
Register to hack today at hacknow.calhacks.io π
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Well do we have the event for you π±Join us for 36 hours of coding goodness at the Palace of Fine Arts October 24-26! Apply here: apply.calhacks.io
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Last year, the SyncUp team built @googlecloud machine learning to help analyze and improve dancers' dance moves in real-time video!
After they placed 3rd at the hackathon, they shared their story with Google Cloud. Read about it on their blog! - calhacks.org/syncup
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Welcoming our friends at @microsoft, a βsmall startup out of Redmond, Washingtonβ as @TommyLee explained π€
Theyβre bringing so much tech π» and prizes this weekend!
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π£ Calling all designers!
Hack Month is your opportunity to:
π Update your portfolio
π Receive personalized industry feedback
π Collaborate with engineers & entrepreneurs
π Get real world project experience!
Applications due TONIGHT at links.calhacks.io/hackmonth_β¦
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Happy new year! Here's a recap of Cal Hacks 3.0! ππ Full video here: bit.ly/2hZJttG
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Excited to welcome Cam Sadler (@rulesbycam), Founder & CEO of @NewCraftHQ as our guest this Friday at 12pm PDT! π€©
RSVP: lu.ma/amplify-cam
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@harvardventures @yaleatyes @ColumbiaEntrep @cardinalventure
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Some non-monetary easy ways you can get involved:
β’ Sign online petitions
β’ Text βJUSTICEβ To 668366
β’ Text βFLOYDβ To 55156
β’ Text βENOUGHβ To 55156
β’ Register to vote
β’ Start discussions about what's going on nationwide w/ friends and family
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This year, we're extending an invite to any collegiate team to apply for our 12-week Fellowship program. βοΈ
Apply & learn more at calhacks.io/fellowship
With your project and passion, we'll help you learn to build a startup, open-source project, or successful side hustle! π
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Thank you so much for coming!
So awesome to meet so many incredible builders β and hear about their excitement for the future β at @CalHacks today!
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For all budding entrepreneurs π
Hack Month is your opportunity to:
βοΈ Meet your future co-founder
βοΈ Expand your network with industry mentors
βοΈ Receive feedback on your ideas
βοΈ Get inspired to build the next big startup
Applications due TONIGHT at links.calhacks.io/hackmonth_β¦
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Cal Hacks : Oct 3-5 : apply.calhacks.io
Registrations now open!
#HackTheBear
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If youβre hacking on anything to do with locations, maps, and places β¦ @Mapbox is your best bet. Super cool to hear the story of how Mapbox got started in 2009 βοΈ
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