Free things to do in San Francisco

Events the organizers list as free, Mon Oct 26 – Sun Nov 1.

Mon Oct 26

Accelerating Frontier AI: The Compute Crisis is a Reinforcement Learning Problem
Talk · Frontier AI · 5 PM – 8 PM · Financial District
FREE Thriller Dance Class - just in time for Halloween!
Class · Thriller Choreography · Sold out · 5:45 PM · Presidio
Are We Running Too Many Agents?
Talk · AI · Sold out · 6 PM – 9 PM · Financial District
Splash Presents: Trivia Mondays
Trivia · 6:30 PM · Potrero Hill
KEYBOARD NIGHT at User Experience Gallery
Meetup · Keyboard · Sold out · 7 PM · SoMa
Haight Laughsbury Comedy Show
Stand-up · 7:15 PM · Haight-Ashbury

Tue Oct 27

Platform Engineering Meetup: Agents broke the balance (& how to fix it)
Networking · Platform Engineering · 5 PM · Financial District
Securing agents in production: lessons from the frontline
Talk · AI · 5:30 PM · SoMa
Mexican Hot Chocolate with Adrien Lopez Lanusse
Cooking Class · 6 PM · The Food Pavilion
Concept Design Preview: Mission Bay Commons
Talk · Park Design · 6 PM · SoMa
Celebrate Local Author Elena Dudum's New Book!
Books & Readings · 7 PM · West Portal
Trivia Night at Rock's Den
Trivia · 7 PM · Excelsior

Wed Oct 28

Garden Volunteer Shifts
Volunteering · 10 AM – 3 PM · Garden for the Environment
Contemporary Art + Architecture: The Speaker Nancy Pelosi Federal Building
Tour · Public Art · 1 PM · SoMa
Tea Tastings at Sol Botanica
Tasting · Tea · 4 PM · Civic Center
Wing & White Claw Wednesdays at Underdogs Cantina
Dinner · Wings · 4:30 PM – 10 PM · SoMa
PEOPLE NEED PLACES - User Experience Gallery Closing Party
Museum & Gallery · 5 PM – 8 PM · SoMa
Agentic Web #01 — Why fetch() Isn't Enough: Reliable Web Access for AI Agents
Talk · AI Agents · 5 PM – 8:30 PM · SoMa

Thu Oct 29

From Planning, Prompting, to Pipetting - How to Utilise Opentrons AI for Lab Automation
Class · Lab Automation · 12 PM · Potrero Hill
Reflections, Notes, & Affirmations for Victims/Survivors
Meetup · Survivors · 1 PM · Potrero Hill
Trick-or-Treat at the Ferry Building
Kids · Halloween · 4 PM · Financial District
Pancake AI x Corgi
Meetup · Pancake Launch · 5 PM – 10 PM · Financial District
Zero Trust for AI: Securing Models, Data, and Autonomous Agents
Talk · AI Security · 5 PM · SoMa
Reclaiming Wellness - Healing Beyond the Headlines
Class · 5:30 PM · Dogpatch

Fri Oct 30

Critic to Critic: A conversation on food criticism and Bay Area Restaurants
Talk · Food Criticism · 10 AM · Mission District
A HALLOWEEN HACKATHON + PARTY (🟠10 spot Left)
Hackathon · Halloween · 12 PM – 9 PM · SoMa
Glenmorangie Single Malt Scotch Tasting
Tasting · Scotch Whisky · 2 PM – 5 PM · Union Square
Fillmore Street Happy Hour Cleanup
Volunteering · Cleanup · 3 PM · Pacific Heights
Ghostly Golden Hour
Tour · 4 PM · Union Square
SPOOKY DANCE PARTY!
Dance Fitness · 6:30 PM · Hayes Valley

Sat Oct 31

HIIT Bootcamp at 1 Hotel San Francisco
Fitness Class · 9 AM · Financial District
DWeb Build Session
Class · Dweb Projects · 10 AM – 5 PM · Hayes Valley
NOCTURNE — Group Art Show @ Punk Majesty - Fashion, Vintage & Art
Museum & Gallery · Fashion · 1 PM – 6 PM · Tenderloin
Exploring Mental Health Through Improv
Class · 2 PM · Mission Dolores
Film: Maxita
Film · 2 PM · Civic Center
THTHNG: Desolation Unknown — Halloween Screening at Live Worms
Film · 7 PM · North Beach

Sun Nov 1

San Francisco Free Walking Tour
Tour · 10 AM · Union Square
Aloha Ukulele Jam - November (11/1/2026)
Open Mic · 1 PM · Stonestown
Free Film Screening: The Loneliest Whale
Film · 1 PM · Civic Center
Necuhtli: VR Film & Artist Discussion
Film · 2:30 PM · Mission District
DÍA DE LOS MUERTOS AT KAIYŌ ROOFTOP
Dance Party · 4 PM – 7 PM · SoMa
Live Music - Nashville Honeymoon
Live Music · Country · 7 PM – 10 PM · Outer Sunset
All things to do in San Francisco