SF Founder Openbook · Updated May 2026

The map I wish I'd
had on day one.

A field tested atlas of San Francisco's startup ecosystem.
Programs, housing, calendar, capital. Every link goes to the real source.

62 entries Curated by Irina Vélez From a place where the future is being shaped
Scroll
00 · Open with these 01 · Programs 02 · Housing 03 · Calendar 04 · Capital 05 · Close
00

Do these this week. In order. They compound.

Each move is a few hours of work and unlocks the next. If you do nothing else from this page, do these five.

01

Programs.

Accelerators, fellowships, grants, credit stacks. The fastest compounding lever of the four. 22 entries, every link verified.

Grant · 0% equity S

Emergent Ventures

Tyler Cowen · Mercatus Center

$5K to $100K grant. No equity. Fast rolling decision. The single highest leverage yes you can chase this week.

mercatus.org
Free housing · 12 wk S

HF0 · Hacker Fellowship Zero

Dave Fontenot

Best free founder housing in SF. 12 weeks of housing, meals, and a $1M SAFE. Selection bar is velocity and prior shipping.

hf0.com
Accelerator · 7% / $500K S

Y Combinator

Garry Tan · two batches per year

Still the global default. The network alone is worth the equity. Apply even if you think you are too early.

ycombinator.com
AI · $250K light terms S

AI Grant

Nat Friedman · Daniel Gross

$250K plus Azure credits at ultra low dilution. Cohort based AI native fellowship. Applications gated. Write tight.

aigrant.com
Office + community S

South Park Commons Founder Fellowship

Ruchi Sanghvi · Aditya Agarwal

Founder community, SF office, weekly dinners, a check. Best "between things" runway in the city.

southparkcommons.com
Equity · hand picked S

Neo Residency

Ali Partovi

Hand picked early stage cohort. Senior operator network. Best for technical founders with conviction.

neo.com
Up to $250K A

Berkeley SkyDeck

UC Berkeley

University anchored accelerator. Strong technical network. Visa friendly for international founders.

skydeck.berkeley.edu
Seed · tier 1 A

Sequoia Arc

Sequoia Capital

Sequoia's seed stage accelerator. Selective. Designed to bridge into a Series A from inside the firm.

sequoiacap.com
$1M check A

a16z Speedrun

Andreessen Horowitz

$1M for games, consumer, and AI. Fast cohorts. Heavy on creative tech founders. Apply with a demo, not a deck.

a16z.com
Latam · invite only A

Endeavor Outliers 2026

Endeavor Global · Comporta

Invite only retreat for Endeavor's top tier founders. Strong LATAM track. Mentor network and capital intros.

endeavor.org
Latam · SF immersion A

Latitud SF Fellowship

Brian Requarth · Yuri Danilchenko

SF immersion built for Latin American founders. Pipeline straight into Latitud Ventures and portfolio network.

latitud.com
AI · residency A

Conviction Embed

Sarah Guo

In house residency at Conviction. AI only thesis. Heavy ML access. Best if you have research credibility.

conviction.com
$10K · one week A

Z Fellows

Cory Levy

One intense week in SF. $10K cash. Quality founders. Networking density beats check size here.

zfellows.com
Equity · anti credential A

1517 Fund · Medici Program

Mike Gibson · Danielle Strachman

Anti credentialist. Funds young, weird, technical. Heavy on dropouts and indies. Tiny checks, big network.

1517fund.com
Global · multi geo A

500 Global

Christine Tsai

Global accelerator with deep Latam pipeline. Multiple geo tracks. Pragmatic, distribution focused playbook.

500.co
$150K credits S

Microsoft for Startups

Microsoft · Founders Hub

Up to $150K in Azure credits, OpenAI API, and Microsoft Teams. Self serve approval. Largest credit pool of the stack.

startups.microsoft.com
$100K credits S

AWS Activate

Amazon Web Services

Up to $100K AWS credits. Free for accelerator backed founders or self applied with a pitch. The easiest credit win.

aws.amazon.com
$200K credits S

Google for Startups Cloud

Google Cloud

Up to $200K GCP credits across two years for AI startups. Larger ceiling if you are inside a partner program.

cloud.google.com
GPU credits S

NVIDIA Inception

NVIDIA

GPU credits, early access, and DGX cloud discounts. Critical if you are training or fine tuning your own models.

nvidia.com
API credits S

Anthropic for Startups

Anthropic

Claude API credits and go to market support. Lower volume but highest quality model access for product teams.

anthropic.com
Latam · micro VC B

Ganas Ventures

Lolita Tagliaferri

Latam aligned micro VC and community. Pre seed checks. Strong Hispanic founder operator network.

ganas.vc
Angel collective B

Hustle Fund · Angel Squad

Elizabeth Yin

Hundreds of small check angels syndicated through Hustle Fund. Worth pitching once you have a metric.

hustlefund.vc
02

Housing.

Where you live in SF is who you compound with. Some are free with a bar to entry. Some are paid with a vibe. Pick density over square footage.

03

The calendar.

SF compounds in person. Don't memorize event lists. Memorize the two platforms where they all live, plus the communities that publish to them.

How they relate. Lu.ma is structured: a host, an agenda, an RSVP. Partiful is loose: a vibe, a venue, your friend's friend. The best week mixes both: one Lu.ma per weekday, one Partiful on Friday.

Upcoming anchor

AI Engineer World's Fair

San Francisco · June 2026

The biggest gathering of AI builders on the planet. Talks, side events, dinners, hiring. Most deals around the event happen at the Lu.ma side parties, not the conference floor itself. Book the hotel six months out.

ai.engineer →
Communities to subscribe to

Always on. Publish to Lu.ma weekly.

04

Capital.

Funds, solo capitalists, angels. Bias toward cold friendly first, Latam friendly second, tier 1 last. Apply pressure to the warm path first. Cold email the rest with personalization.

Cold friendly · pre seed S

Hustle Fund

Elizabeth Yin

Famously cold friendly. Small first checks. Strong follow on through Angel Squad. Contact elizabeth@hustlefund.vc.

hustlefund.vc
Solo · $1B+ AUM S

Elad Gil

Gil Capital · solo capitalist

$1B+ AUM. Fund III. 200+ investments. Operator pedigree. Warm intros work best. Reads cold email when sharp.

eladgil.com
AI · $230M Fund II S

Conviction

Sarah Guo

$230M Fund II. 50+ portfolio. AI only thesis. Pair with the Conviction Embed application.

conviction.com
Solo · $500M Fund III S

Naval Ravikant

AngelList · USVC Fund III

USVC Fund III ($500M retail AI, 2026). 378+ total investments. Highest mythos density per dollar in the city.

nav.al
Community fund S

South Park Commons VC

Ruchi Sanghvi · Aditya Agarwal

The fund attached to the SPC community. If you are in the room, the capital follows.

southparkcommons.com
Pre seed lead S

Pear VC · Pear Garage

Pejman Nozad · Mar Hershenson

Top tier pre seed fund. Pear Garage is the residency style early track. High touch from day one.

pear.vc
Cold friendly · solo A

Sahil Lavingia

shl.vc · Gumroad founder

Active angel. Builder bias. Tweets back. Send a working product, not a deck.

shl.vc
Solo · media A

Shaan Puri

AllAccess Fund · My First Million

Active angel. Best for consumer and media adjacent plays. Followers are not checks. Lead with traction.

shaanpuri.com
Solo · PM angle A

Lenny Rachitsky

Lenny's Newsletter

PM builder angel. Strong for consumer and B2B SaaS. Distribution aware. Newsletter intros help.

lennysnewsletter.com
Latam · $17B portfolio EV A

Nazca

Héctor Sepúlveda · Mexico City

$17.3B portfolio EV. 90+ companies. Strong LATAM coverage. Bridge Latam merged in. Network driven.

nazca.vc
Latam · Hispanic founder first A

Ganas Ventures

Lolita Tagliaferri

Hispanic founder first thesis. Network led. Small checks but loud cheerleaders. hello@ganas.vc.

ganas.vc
Latam · fellowship pipeline A

Latitud Ventures

Brian Requarth · Yuri Danilchenko

Latam first fund. Pipeline from the Latitud fellowship. Apply to fellowship first. Fund follows.

latitud.com
Tier 1 · accelerator A

Y Combinator

SF · two batches per year

Apply to the program. The fund is the byproduct. Still the highest leverage default in the city.

ycombinator.com
Tier 1 · early stage A

a16z Speedrun · START

Andreessen Horowitz

a16z's early stage on ramps. Speedrun for games, consumer, AI. START is the first check fund.

a16z.com
Tier 1 · seed A

Sequoia Arc

Sequoia Capital

Sequoia's seed program. Inside track to a Series A from the firm. Selective and design forward.

sequoiacap.com
Solo · pre seed A

K9 Ventures

Manu Kumar

Solo capitalist. Pre seed first checks. Engineering heavy founders preferred.

k9ventures.com
AI · $232M Fund III A

Air Street Capital

Nathan Benaich

$232M Fund III. 18 active. Deep AI research thesis. London and SF presence.

airstreet.com
AI · cohort grant A

AI Grant

Nat Friedman · Daniel Gross

Cohort based AI grant. Listed again here under capital. The Friedman and Gross network is the value.

aigrant.com
Grant · 0% equity A

Emergent Ventures

Tyler Cowen · Mercatus

Listed again because every founder needs to apply. Zero equity. Fast. Cold friendly by design.

mercatus.org
05

How to use this page.

01

One page, four levers.

Programs unlock money and network. Housing unlocks density. Calendar unlocks serendipity. Capital closes the loop. Pull all four in parallel. Never sequentially.

02

Bias to action.

Tier S is doable this week. Tier A is doable this month. Tier B is for when you have leverage. The fastest founders apply to everything tier S in their first seven days here.

03

Cold friendly first.

Warm intros take weeks. Cold friendly investors and grants take days. Stack the fast yeses first. Let them buy you the warm intros to the slow ones.

04

Latam is a feature.

The SF playbook is not a substitute for the Latam playbook. It is a multiplier. The best founders here use both networks simultaneously.

From a place where the future is being shaped.