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Sam's guide

Sunday, September 20, 2026 · San Francisco

Sam's guide — San Francisco tech events, curated daily

“You can see the future first in San Francisco.”

— Leopold Aschenbrenner, June 2024

Today in SF

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  • 9:00 AM

    The AI Debates Hackathon

    Machines argue. Humans judge. The first AI debate tournament. You get one Saturday to build a voice agent that argues AI ethics and risk: it hears the opposing case live, forms a rebuttal in seconds, and answers out loud.

    AGI House SF: 170 St. Germain Ave. San Francisco CA 94114

  • 9:00 AM

    Sunday Founder Rides: Low-Gear, High-Connection

    Approval required

  • 10:00 AM

    Recursive Self Improvement Hack #5

    Free · Approval required

  • 10:00 AM

    Rebuild With Jev: Decision Bot Architecture + Hackathon

    Free · Approval required

  • 10:00 AM

    Trivalley Meetup- ComplianceAware Finetuning

    Dublin Civic Center, Dublin · Free · Approval required

  • 11:00 AM

    Strawberry Creek Brunch GGSxBerkeley SWE

    Strawberry Creek Park, Berkeley · Free

  • 11:00 AM

    AI Agents Bootcamp: Day 1

    SupportVectors, Fremont · Free

  • 11:00 AM

    The Next Interface Hackathon: Rethink how we talk to AI

    Free · Approval required

This Week in Tech

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  • Today · 12:00 PM

    Alpaca x Conviction Hackathon

    Frontier Tower @ Spaceship 995 Market Street, San Francisco · Free · Approval required

  • Today · 3:00 PM

    B&B x VERVE SANTA CRUZ

    BOUNCE CREW. We're back with one of our most anticipated summer parties of the year in the heart of downtown Santa Cruz. We've got a super exciting lineup for this event: BURNER.BBY MARKYMETHOD B2B RY BRYGUY Recap from last year's event in Palo…

    Verve Coffee Roasters

  • Tomorrow · 1:00 AM

    KI-Regulierung 2.0? Was der AI Omnibus für (KI-)Start-ups bedeutet

    Free

  • Tomorrow · 10:00 AM

    ALIT LifeTech Office Hours @ 1030 Brittan Ave

    1030 Brittan Ave, San Carlos · Free

  • Tomorrow · 12:00 PM

    MLT Startup Network Power Lunch [September 21, 2026]

    Free

  • Tomorrow · 1:00 PM

    ALIT LifeTech Office Hours @ 733 Industrial Rd

    733 Industrial Rd, San Carlos · Free

  • Tomorrow · 4:00 PM

    Battle of the Personal Brains Hackathon 🧠

    Bright Data · Free

  • Tomorrow · 5:00 PM

    Tech-Free Après

    San Francisco · Free

  • Tomorrow · 6:00 PM

    Scaling GTM in the AI Era: The 10x Seller

    Slash · Free · Approval required

  • Tomorrow · 6:30 PM

    Builders Night

    540 Laguna St, San Francisco + 540 Cafe · Free

  • Tomorrow · 7:00 PM

    Agentic AI Monetization Workshop

    Entrepreneurs First · Free · Approval required

  • Tue, Sep 22 · 8:00 AM

    Mission Founders Running Club

    Arizmendi Valencia Bakery · Free · Approval required

The Weekend

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  • Sep

    20

    Picnic at Salesforce Park

    12:00 PM · Salesforce Park, SoMa · Free

  • Sep

    20

    Cybersentics Book Club September 2026: From Lab to Living Room

    12:00 PM · Gray Area / Grand Theater, Mission · $15

  • Sep

    20

    SF AI Code And Coffee Sunday September 20th!

    2:00 PM · Salesforce Park, SoMa · Free

  • Sep

    20

    Fables & Futures: A play-based workshop on tech and society

    2:00 PM · Local Economy, Oakland · $15

  • Sep

    20

    Breaking Models AI Security

    3:00 PM · Hacker Dojo, Mountain View · Free

  • Sep

    20

    Thirst Draft: Write Drunk, Edit Never

    6:00 PM · Madrone Art Bar

Plan Ahead

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  • Sep

    28

    ThinkingAI Agentic Growth Summit 2026

    12:00 PM · Computer History Museum, Mountain View · Free

  • Sep

    28

    DeepTech Investor Connect | InnoTrek USA 2026 | Nasscom x IDTA

    1:30 PM · KPMG LLP, Santa Clara · Free

  • Sep

    28

    AI for Frontier & Meta Science Workshop - Event Description Only, Apply On Website

    3:30 PM · The Fold · Free

  • Sep

    28

    🌐 Software Cluster: Green your org's AI

    5:00 PM · 9Zero Climate Innovation Hub, Financial District · Free

  • Sep

    29

    Mission Founders Running Club

    8:00 AM · Arizmendi Valencia Bakery · Free

  • Sep

    29

    Collaborative Agent Hackathon @ Stanford

    9:30 AM · 389 Jane Stanford Way, Stanford · Free

  • Sep

    29

    GenAI, Vibe Coding and Agentic AI: Talks + AI Agent Workshops

    3:00 PM · 135 Constitution Dr, Menlo Park · Free

  • Sep

    30

    Flower AI Day: Collaborative Superintelligence

    12:00 PM · The Pearl, Dogpatch · Free

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