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October 23–25, 2026 · San Francisco

The page you were looking for doesn't exist. This conference does.

Three days of talks, workshops, and collisions at the intersection of AI, engineering, and the weird future of the internet. 1,200 builders. Zero filler panels.

Claim Your Ticket → See the Lineup
📍 The Midway, SF
🎙 40+ Sessions
🚀 1,200 Attendees
Trusted by teams at
Stripe Vercel Figma Linear Notion Anthropic Datadog Supabase Cloudflare Shopify Retool Railway Stripe Vercel Figma Linear Notion Anthropic Datadog Supabase Cloudflare Shopify Retool Railway
// speakers

Builders, not buzzwords.

No keynote circuit recyclers. Every speaker is shipping something real, right now.

MK
Maya Krishnamurthy
CTO, Arcline AI · Ex-Google DeepMind
"Agents That Actually Work"
JR
James Reeves
Principal Engineer, Stripe
"The Infra Nobody Sees"
SL
Sofia Lindqvist
Founder, Compose Labs
"Why Your RAG Pipeline Lies"
DW
Derek Wong
VP Eng, Notion · Author of Scaling Teams
"Ship Velocity vs. Ship Quality"
AP
Ama Patel
Staff ML Engineer, Anthropic
"Evaluating What You Can't Measure"
TN
Tomasz Nowak
Co-founder, Sentry · OSS Maintainer
"Observability in the LLM Era"
RH
Riley Harper
Design Lead, Figma
"Interfaces for Non-Determinism"
CZ
Claire Zhang
CEO, Meridian Security
"AI Red-Teaming for Mortals"
+ 32 more speakers to be announced
// agenda

Three days. No filler.

Deep technical talks, hands-on workshops, and the conversations that happen between sessions.

09:00
Doors Open · Coffee & Registration
All
10:00
Opening Keynote: The Page Not Found
Maya Krishnamurthy
Keynote
11:15
Agents That Actually Work: A Live Build
Maya Krishnamurthy
Workshop
14:00
The Infra Nobody Sees
James Reeves
Talk
15:30
Why Your RAG Pipeline Lies to You
Sofia Lindqvist
Talk
18:00
Welcome Reception · Rooftop
Social
09:30
Ship Velocity vs. Ship Quality
Derek Wong
Talk
10:45
Evaluating What You Can't Measure
Ama Patel
Talk
13:00
Workshop: AI Red-Teaming for Mortals
Claire Zhang
Workshop
15:00
Observability in the LLM Era
Tomasz Nowak
Talk
16:30
Unconference: Hallway Track
Open
19:00
404 Party · Live Music & Demos
Party
09:30
Interfaces for Non-Determinism
Riley Harper
Talk
11:00
Workshop: Build & Deploy in 90 Minutes
Workshop
13:30
Lightning Talks · 8 Speakers, 5 Min Each
Lightning
15:00
Closing Keynote: What We Build Next
Full Speaker Panel
Keynote
16:30
Farewell & Networking
Social
// tickets

Pick your path in.

Early-bird pricing ends August 1. All tiers include lunch, coffee, and the afterparty.

Standard
Full conference access. Every talk, every session, every meal.
$599
Early bird · $899 after Aug 1
  • All 3 days of sessions
  • Lunch & unlimited coffee
  • Welcome reception access
  • 404 Party entry
  • Recording access (30 days)
Get Standard Ticket
Most Popular
Pro
Everything in Standard, plus workshops and front-row access to speakers.
$999
Early bird · $1,399 after Aug 1
  • Everything in Standard
  • All hands-on workshops
  • Speaker Q&A sessions
  • Private Slack community
  • Lifetime recording access
  • Swag box shipped to you
Get Pro Ticket →
VIP
The full experience. Speaker dinners, 1-on-1s, and a few things we can't list here.
$2,499
Limited to 50 seats
  • Everything in Pro
  • Speaker dinner (night 1)
  • 1-on-1 office hours with speakers
  • Priority seating, all sessions
  • VIP lounge access
  • Airport transfers included
  • +1 guest pass to the party
Get VIP Ticket

Need 5+ tickets? Contact us for group pricing.

// what people say

Don't take our word for it.

★★★★★

"I've been to every major tech conference. 404 is the only one where I actually learned something I used the following Monday."

KM
Kai Matsuda
Staff Engineer, Vercel
★★★★★

"The hallway track alone was worth the ticket price. I met my co-founder at last year's 404 afterparty."

PR
Priya Raghavan
CEO, Stackblend (YC W25)
★★★★★

"No fluff, no vendor pitches disguised as talks, no 'thought leaders' with nothing to say. Just people building things, talking about how."

EO
Erik Olsen
Engineering Manager, Datadog
// faq

Frequently found questions.

Is 404 Conference a real conference? +
As real as it gets. Three days, 40+ sessions, 1,200 attendees, one very real venue in San Francisco. The name is ironic. The content is not.
Where exactly is the venue? +
The Midway, 900 Marin Street, San Francisco. It's a 30,000 sq ft industrial arts space with a rooftop, multiple stages, and enough room for you to avoid anyone you want.
Can I get a refund if I can't make it? +
Full refunds up to 30 days before the event. After that, you can transfer your ticket to someone else at no cost. We don't do partial refunds, but we've never had someone regret showing up.
What's the COVID / health policy? +
We follow San Francisco county guidelines. If anything changes before October, we'll email all ticket holders with updated policies. Hand sanitizer and good vibes are always available on-site.
Will talks be recorded? +
Yes. Standard ticket holders get 30-day access to recordings. Pro and VIP get lifetime access. But honestly, the energy in the room doesn't come through on a screen.
Do you offer diversity scholarships? +
Absolutely. We're setting aside 100 scholarship tickets for underrepresented folks in tech. Applications open June 1. If cost is a barrier, we want to remove it.

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Early-bird pricing ends August 1, 2026. 1,200 seats. No waitlist.

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