Models are converging. Control is the moat.
Models are commoditizing
GPT, Claude, Gemini at parity within months of each release
The durable asset isn't compute
It's the user's accumulated thinking
Whoever owns memory owns the relationship
Silo is the layer that fixes that
Everything you create in AI gets stuck
Your memory is locked inside ChatGPT. Your context can't move to Claude. Your conversations reset every time you switch tools. The platforms keep what should be yours.
“There is no system of record for your thinking.”
Enterprises have databases and CRMs. Individuals have nothing.
AI broke how knowledge persists
AI didn't just change interfaces. It changed the shape of knowledge itself — from documents you write to conversations that vanish. The infrastructure for persistence didn't keep up.
If AI becomes how we think, we need a place where that thinking lives.
Silo is where your thinking lives
The control plane between your data and every AI
Portable
Works with ChatGPT, Claude, Gemini, agents, and tools
Persistent
Thinking compounds and doesn't reset
User-Owned
You decide what each system can see
Available today via iOS app. Built on an open format. Extending to every service you connect.
.silo
A portable, lossless container for AI memory — not a chat, not a document. Authored thinking, not a model's interpretation of it.
Authored, not interpreted. Interactive, not static. Yours to share.
Why Silo wins
They use lock-in to create loyalty. Silo creates loyalty by letting your data go anywhere.
The layer already exists
Silo App
.silo format
Shareable Silos
First working system for portable AI memory. iOS app, MCP server, and the .silo open format.
The flywheel
Each stage deepens the control plane. Distribution and infrastructure are the same motion. Every user compounds the layer.
Explore drives creation
AcquisitionVisitor finds a public silo on explore.onesilo.com. Interacts with it. Thinks "I want to make one of these." Signs up, subscribes, creates their first silo.
App deepens the layer
DepthUser downloads the iOS app. On-device data flows in — calendar, contacts, HealthKit, location, news. The upsell from web to app isn't features; it's surface area.
Services extend the scope
GravityPlaid, Dropbox, Google — all governed through one dashboard, one policy layer. The gravity well deepens. Any AI that wants this user's data must route through Silo.
Cross-model capture
InboundUser is in ChatGPT: "@silo store the important details in a new silo called Project X." That silo is now accessible in Claude, Cursor, everywhere. The control plane receives inbound data from external models.
Agent configuration
Platform.silo files replace markdown skills files as structured starting context for agents. Mode enforcement, explicit boundaries, confidence levels. Not left to interpretation.
Enterprise
ScaleSame layer, organizational scale. IT managers govern company data with .silo files as version-controllable memory states. Nothing new is built — same control plane, role-based access on top.
Every new silo is a new tenant on the control plane. Each user compounds the layer.
Three forces converging
Model Parity
Switching cost inside any single model is collapsing
MCP Standardization
The protocol layer for portable AI context just became real
User Awareness
"My ChatGPT history is trapped" is becoming a felt problem
This window opens once. Memory is becoming the control point now.
$80B
Global SEO spend in 2025 — the presence layer for the search era.
Silo is the presence layer for the AI era — where your data, voice, and authored knowledge live across every model.
Consumer subscription today → control-plane fees and per-silo hosting tomorrow → enterprise governance at scale.
Source: Statista, Global SEO Services Market 2025.
The thesis in behavior
Three forces converging is why now in the world. The numbers below are why now in the product.
30%
Organic switchers
of users switch models on their own after the first session
8
Switches per cycle
model changes per active switcher in a 14-day window
~2x
Retention lift
week-one retention for switchers vs. non-switchers
Source: Silo production telemetry, May 2026.
Business model
Consumer
Subscription for memory + models
Pro / Builders
Advanced silos, sharing workflows
Enterprise
Knowledge silos, governed access
People don't pay for answers. They pay for not losing what they've built.
Team
Shawn Welch
Founder / CEO
- PM at the largest college textbook publisher in the world during the
.mobirevolution - Co-authored a WSJ bestseller with Guy Kawasaki on self-publishing
- Founding engineer on Cash App; Head of Mobile Engineering at Block Financial Services
- Built consumer systems at scale to tens of millions of users
- The person who watched one file format transform an industry, now building the next
Built Silo to make memory user-owned, portable, and independent.
Angels
Not random checks — a coherent network. Square and Cash App leadership plus founders building in adjacent categories.
.silo
becomes the format for knowledge.
We won't build the verticals. We define the primitive.
Nothing gets stuck. Own Yourself.