CastelOS — the system everything runs on
A local AI system on a single workstation: we deliver everything we sell with it. For companies — pilot and rollout on request.
THE SYSTEM
CastelOS
Most businesses run on a patchwork: ten tools, ten subscriptions, ten context switches, ten points of failure. CastelOS is the alternative — one governed system on one powerful workstation, run by one operator.
Content
Drafts, documentation, and copy move from idea to reviewable text without leaving the system.
Analytics
Your data becomes a readable report instead of a spreadsheet nobody opens.
Knowledge
Everything your team has written becomes something your team can actually find.
Media
Visuals and audio are produced under the same governance as everything else.
Automation
Routine steps run on their own, and pause for a person when it matters.
Reporting
The state of the operation is always one glance away, not one meeting away.
17 studios across the platform — one operating system.
How it's built
Four layers, one machine. Click a layer to see what it does.
One workstation you can point at. GPU and memory routing decide where each task runs — a small model for a small job, the big one only when it earns its power draw.
your building · your power socket · your data
Every run passes through the same gate: policy checks before, an audit trail after. Risky actions stop and wait for a person — that's a feature, not a bottleneck.
policy layer · audit trail · human checkpoints
Seventeen specialised studios — text, analytics, knowledge, media, automation and the rest — behind one front door. The router reads the task and picks the studio; you never file paperwork to the wrong department.
one request in · the right studio takes it
Not chat transcripts — files. Reports, documents, media, each one traceable to the run that made it. If a number is in the report, the trail shows where it came from.
real files · every run tracked
What it is not
- just a chatbot
- a wrapper over one model
- a collection of prompts
- a studio zoo
- a SaaS dashboard
IS
- a system
- installable
- local-first
- governed
- extensible through packs
- built for execution
Editions
Lite
single-domain starter profile
Pro
full multi-studio workstation
Enterprise
custom deployment and governance
Pricing on request.
Deployed as operator-installed pilots today. Self-serve edition — join the waitlist.
LIVE DEMO — SIMULATED
Ask the OS
Try a sample request below. This demo shows how CastelOS classifies and routes work — not a live connection to a production system.
Response will appear here once you send a request.
SYSTEM PULSE
The system behind this site, in numbers.
This studio doesn't run on slideware — the platform that does the work audits itself, and these are its own figures. Dated snapshots, not live dashboards: we'd rather show you a real number from last week than a fake one from right now.
- 17
- studios in the registry
- studio registry
- 128
- text task types
- text engine task types
- 1751/1755
- suite tests passing
- TLX suite run, 2026-07-03
- 52
- routing chains
- routing chains
- 691
- MITRE ATT&CK techniques mapped
- MITRE ATT&CK techniques mapped
- 1600+
- security registry entries
- live security registry entries
PUBLIC PROOF, PRIVATE MOAT
How it thinks
We publish principles, not internals: local-first by design, the smallest capable model for each task, human approval where it matters. If it explains a pattern — we share it. If it enables cloning — we don't.
Contact
One person reads this inbox — the same person who builds what you order.
Describe your task
Tell us what you have and what result you need — even a single small task. No brief required: within 48 hours you get a plan and a price in writing, a question, or an honest “not a fit”.
Talk to us
Prefer a call or a messenger? Write or call — the studio's founder answers.
Phone · WhatsApp · Telegram
A one-person AI studio in Nice. Whoever answers your message is the one who does the work — no account managers in between. Files are processed on our own machine, not in someone else's cloud.