For Fun

Builders who Run SF — 5K

Location not listedFreeApproval required

Builders who Run is an informal and international running club. Our 128th week in a row! Gear up for a chill 5k run with new and old builder friends at Crissy Field! We meet at 9 am and kickstart at 9:10 am sharp. Open to all builders, not just Solo Founders Program & ODF.

Hack for Social Impact 2026

Location not listedFreeApproval required

🚀Make an impact on real world problems in a single weekend!🚀 HSI is back for our third year in a row! Join Hack for Social Impact once again to tackle real-world challenges.

Hike & Hang — Lands End | Tokens&

Lands End LookoutFreeApproval required

Columbia in Tech SF Annual Hike

Stanford Dish Hiking TrailheadFree

Taiwanese AI x Bio Social

345 4th StFreeSold out

Rally: Visa Pathways & Pickleball For Immigrant Founders (SeedSeries A+)

Presidio WallFree

Building a company is only part of the journey. As an immigrant founder, you're also building the professional story behind it. Join AI Valley, MeritMap, & E1B2 for an afternoon of pickleball & community with immigrant founders & entrepreneurs navigating what comes next.

Rally: Visa Pathways & Pickleball for Immigrant Founders (Seed–Series A+)

DinkSF, 554 Fillmore St, San Francisco, CAFreeApproval required

YC x CalHacks Afterparty

Location not listedFreeApproval required

Scrappy AI Founders Play Soccer

Location not listedFreeApproval required

HACKER'S MOVIE NIGHT

Hacker Dojo, Mountain ViewFree

🎬 Join us for a night of cinematic fun at Hacker Dojo's Movie Night! 🍿 Get ready to laugh, relax, and enjoy a great film with fellow tech enthusiasts. 🎥We'll be screening in 3D 🕶 ✨The Adventures of Tintin✨ (Hidden treasure with Daniel Craig, 2011, 1h 47m) (🍅75% 🍅74%,…

Pre-Universe Rooftop Happy Hour

CodeRabbit, Financial DistrictFreeApproval required

Before GitHub Universe kicks off, join us on a rooftop in San Francisco for a chill evening as the sun goes down. We'll have a DJ, good food, drinks, and plenty of good chats with builders and folks from the community.

♠️ All In // Depot x Inference x xx Poker Night

8 California St floor 2, Financial DistrictFree

Join Inference and Depot for a casual ping pong night at the Inference office on October 27th! 🏓 We’re setting up three ping pong tables for a tournament-style bracket, leading up to one final championship match. 🏆 The grand prize? A Nintendo Switch 2!

Who Killed the Build? 💀 A Halloween DevTools Murder Mystery with Flox

Location not listedFreeApproval required

Mem0 OSS Happy Hour: The People Who Read the Source

Location not listedFreeApproval required

🎃 UX Halloween Happy Hour & Social

Enterprise Brewing Co, SoMaFree

Make new friends and build connections (in costume!) Let’s meet at Enterprise Brewing for drinks, spooky vibes, and good conversations! It’s Halloween week, so we’re going full theme.

Bonsai Tech Happy Hour

Belly Left Coast Kitchen & Taproom, Santa RosaFree

4H Game Jam - Chroma Awards

Location not listedFreeApproval required

33rdPeninsula Value Economy X Sustainability (Climate) Mixer, Happy Hour — AI, Health

Location not listed$20Approval required

Nimble Game Jam

Location not listedFreeApproval required

GitBlame: Werewolf Happy Hour @GitHub Universe

LobalitaFreeApproval required

🐺 Drinks, a werewolf hunt, and the best infra crowd in town Calling all DevOps, platform, infra and AI engineers 🛠️ Day one of GitHub Universe is done... Now find out who in the room you can’t trust.

Women in Data + Eng Happy Hour: Pre Data Outpost Meetup

Birba, Hayes ValleyFreeApproval required

Bubble Lab (YC W26) X Lunatechs - Pretty Cool Demos and Pre-Tech Week Social!

European Startup EmbassyFreeApproval required

Bubble Lab and Lunatechs is happy to present to you guys our 2026 PRE-SF Tech Week event! We know everyone is SUPER excited for tech week so we designed what hopefully will be the PERFECT event to kick it off!

Drinks Around The Fire: Cartesia x Lorikeet

Mission DistrictFreeApproval required

Pull up a chair. Cartesia, Lorikeet, and Speak are coming together for an evening of great conversation and delicious drinks/food. We're bringing together some of the minds building the next generation of voice AI to talk shop, share lessons from the field, and explore what's…

Compute & Cocktails with Compute Exchange and Silicon Data

Pagan IdolFreeApproval required

Join Compute Exchange and Silicon Data for an evening with friends across the AI ecosystem, bringing together AI labs, neoclouds, and key industry partners. Many of these companies are already our clients and partners.

Consumer App Poker Night

Union SquareFreeApproval required

For founders and growth leaders building consumer apps. A relaxed poker night for the people building and growing the apps on your home screen, hosted by Valid at our Union Square office. No pitches and no panels.

AI Open Mic | Comedy Night Halloween Edition

tiat$30

Build & Date: Halloween Physical AI Night

Yummy Future Coffee, Matcha & Tea, Palo AltoFree

YC x OpenAI Run Club

Location not listedFreeApproval required

👻 Your Agent Is Your +1｜A Halloween Party for Humans & Their AI Agents

Location not listedFreeApproval required

Bonneville Labs: BioTech Monthly Social (Halloween Edition)

750 Gateway Blvd, South San FranciscoFreeApproval required

9Zero Halloween Happy Hour at Zeitgeist🎃

Zeitgeist, SoMaFreeApproval required

9Zero is hosting a Halloween Happy Hour at Zeitgeist. Join us for some frightfully good spirits 👻🍻 Costumes strongly encouraged!!!! Gourd vibes only🎃! About 9Zero: We’re a members-only community of founders, investors, scientists, and innovators accelerating climate solutions…

P-1 AI Happy Hour

Location not listedFreeApproval required

Castro Street Tech Happy Hour

280 Hope St, Mountain ViewFreeApproval required

Halloween Creator Night @ Berkeley

University of California, Berkeley, BerkeleyFreeApproval required

Agents After Dark: Mini Golf & Arcade @ GitHub Universe

Subpar Miniature GolfFreeApproval required

GitHub Universe 2026 Side Event Join us for Agents After Dark presented by 1Password, a night of mini golf, arcade games, food, drinks, and good company during GitHub Universe!

Poker Night: AI-Native GTM

Obvious VenturesFreeApproval required

AI Startup Comedy Night with Abaka AI

Location not listedFreeApproval required

Inco Launch Party

1881 Page Mill Rd, Palo AltoFree

🥁 Drumroll please... Inco is coming out of stealth! 👀 We have new branding! We have cool products!

SVVR #103: LEGO VR + GIANT ARCADE AFTERPARTY

Circuit Launch, Mountain View$20Approval required

Romanian Tech in SF - October Drinks & Chat

Location not listedFreeApproval required

Decagon SF Office Warming Party!

680 Folsom StFree

🎃 No Excuses by .tech domains, Just Costumes: $10K Founder Party

425 Bush StFreeApproval required

Byteport Poker Night: Founders & Engineers

251 Laguna St, Hayes ValleyPrice not listed

Byteport (YC26) is hosting a poker night! Who are you? SWE, entry-level to exec, founders Who are we? Byteport (YC W26). We build fast file transfers for developers.

Networking with Mextropic : AI X Bio Happy Hour

Location not listedFreeApproval required

Mahjong Mayhem for Builders and Operators

Location not listedFreeApproval required

Join us at Studio 13 in Emeryville for a Mahjong social night built for operators, founders, business owners, builders and leaders who want a fun way to unwind and connect. If you’re building a product or business, this is for you to connect with others of the same kind.

Halloween Runway 👑 SF’s Most Curated Costume Party

Location not listed$20Approval required

Builders who Run SF — 5K

Location not listedFreeApproval required

TestMu AI Agent Party Meetup

TestMu AI (Formerly LambdaTest)FreeApproval required

Plug and Play Taiwan x Silicon Valley Founders & Investors Happy Hour

Startup Island TAIWAN - Silicon Valley Hub, Palo AltoFree

Spark & Spirits SF: Data & AI happy hour

Iron Horse CocktailsFreeApproval required

Wrap up the Data Engineer Things Data & AI Leadership Summit in San Francisco with a happy hour of craft cocktails, hors d'oeuvres, and good company at Iron Horse Cocktails on Maiden Lane, a short walk away.

Fire & Water: A Resilience Week Happy Hour

2175 Monarch St, AlamedaFree

Data Outpost Kickoff Party with MotherDuck, Essence, Theory and Zetta.

Natoma Cabana, SoMaFreeApproval required

Defense Tech Happy Hour

San FranciscoFreeApproval required

Bay Area Ecom Founder Social Nov 2026

Location not listedFreeApproval required

The Build Social: Latin Dance Evening with Science & Networking

1030 Brittan Ave, San CarlosFreeApproval required

Honoring Julia Collins & Preview Party For Project Diane - Women Led Ventures and the Capital Shaping the Future

541 Ramona St, Palo AltoFreeApproval required

GTM Social

Studio Golf | Bar and Grill, Financial DistrictFreeApproval required

Come hang with us! incident.io is hosting a night for anyone in a GTM role (sales, CS, marketing, SEs, RevOps, and everything in between) to meet people, swap stories, and make some new connections. Think drinks, golf simulators, and good company.

San Francisco Tech & AI Social

Bella lounge and bar SF, SoMaFree

A monthly mixer for SF’s builders, operators and innovators. Albert’s List is bringing together the people shaping the city’s tech and AI scene for an evening of cocktails, good bites and real conversation about careers, AI and what everyone’s working on.

Fonzi's Devs & Drinks

Location not listedFreeApproval required

Join Fonzi for Devs & Drinks, bringing together San Francisco's community of engineers, founders, and builders for a casual evening of drinks and conversation. We're taking over ANINA, a tropical-inspired cocktail bar in Hayes Valley with a spacious, heated outdoor patio.

AI Builders - Poker Night by EliseAI

Location not listedFreeApproval required

Trackit Happy Hour

525 Market St, SoMaFree

Founder Poker Night 5 | With Slash, Pump and Boardy

420 Bryant StFreeApproval required

V2H Demo & Happy Hour

Temescal Brewing, OaklandFreeApproval required

Multiplayer Build Night & Mixer by Party (Peninsula)

810 Hamilton St, Redwood CityFreeApproval required

Multiplayer Building is here. Google Docs made documents collaborative. Figma made design collaborative. Now, Party is making building collaborative. Party is the multiplayer workspace where your whole team + agents build together, out in the open.

Golden Gate Social Hour & Hoops, Hops and Warriors Ticket Raffle 🌉

Bar Sprezzatura, Financial DistrictFreeApproval required

Focus On Risk Hike — Monthly Founder & Investor Walk | Los Gatos, CA

Croissante, Los GatosFree

Founders Paintball - Shor x Corgi x Rho

Corgi CafeFreeApproval required

Pace AI Picnic 2 🟡

China Basin ParkFree

Sunday Picnic, Halfway Between the Labs This summer, pacing was a letter. Now most lab leaders say they're for it, and nobody agrees yet on what it means in practice. Six companies signed a voluntary safety accord at the White House.

5K Run with Apify

Fort Point National Historic SiteFreeApproval required

HACKER'S MOVIE NIGHT

Hacker Dojo, Mountain ViewFree

AI Builder Pickleball Tournament

The HUB Pickleball Club - Silicon Valley, CampbellFreeApproval required

Contamination & Cocktail Hour

Location not listedFreeApproval required

Tech & Chess | Season Finale

Location not listedFreeApproval required

Uploading for Structural AI Safety: happy hour

Location not listedFreeApproval required

INFERENCE: NOVEMBER // Cowork & Chill 🧑‍💻☕️

8 California St floor 2, Financial DistrictFree

Every second Wednesday, we’re opening up the Inference office for an afternoon of coworking, hanging out, and meeting new people. 2:00–6:00 PM — come whenever, stay as long as you want.

Scrappy Founders Go Karting

Location not listedFreeApproval required

Fresh Connections by Oxylabs: VapiCon Afterparty

BarrioFreeApproval required

Join us for a VapiCon afterparty hosted by Oxylabs. A little extra for the first 20 to register: a special tequila tasting experience! 🍋‍🟩🌵 Connect with fellow AI builders, industry professionals, and the Oxylabs team over drinks, snacks, and great conversations at Barrio, a…

High Stakes Poker Night: Engineers v Investors

Location not listedFreeApproval required

Mahjong Party for AI Builders

Location not listedFreeApproval required

P-1 AI Happy Hour

Location not listedFreeApproval required

Après AI | Power Up. Chill Out. Cheers!

Location not listedFreeApproval required

LA Fintech Connect Happy Hour

Location not listedFreeApproval required

Obvious Ventures The Future of Robotics: Founder Cocktails

Location not listedFreeApproval required

VapiCon 2026 After Party

Thriller Social Club, SoMaFree

Unwind, Connect & Amplify: The Official VapiCon After Party Keep the momentum going after the final keynote & head over to Thriller Social Club at 7:00 PM for the VapiCon after party.

We Make Noise x MONO Opening Party and Fundraiser!

Location not listedFree

Sisters Female Founders Hike

San FranciscoPrice not listedApproval required

Builders who Run SF — 5K

Location not listedFreeApproval required

ULTIMATE GAME NIGHT

Hacker Dojo, Mountain ViewFree

Scrappy AI Founders Play Soccer

Location not listedFreeApproval required

Ignite & Unwind: An Executive Wine Tasting Reception Hosted by Everpure and Commvault with Microsoft

326 Brannan StFreeApproval required

PEF Bay Area: AI Show & Tell Happy Hour 🤖

Blazel, Palo AltoFreeApproval required

Happy Hour during Microsoft Ignite

Southside Spirit House, SoMaFreeApproval required

Bonneville Labs: BioTech Monthly Social

Omakase World Market, South San FranciscoFreeApproval required

Best Move Club: Chess Community Event Series

Location not listedFreeApproval required

Happy Hour | Tech Weekend November 2026 | Menlo Park | Silicon Valley

Allied Arts Guild, Menlo Park$25

MCP's 2nd Birthday Party

Location not listedFreeApproval required

Tech Weekend Happy Hour | Menlo Park | Silicon Valley

Allied Arts Guild, Menlo Park$25

♠️ Private Poker Night // Researcher's Table No. 01

8 California St floor 2, Financial DistrictFree