Operator
It reviews your data and flags missed follow-ups, quotes awaiting a reply and clients gone quiet. It writes the email, and you approve it.
What is CustOS?
In short
CustOS is the custom operating system we build around your business. Your key data comes together in one place, and AI teammates work on top of it. We set it up in your own accounts, train your team and run it for a monthly fee. We quote the price after the assessment.
Updated: 1 November 2026
Why AI needs shared data
An AI tool only knows what it can see. If clients, ads and invoices sit in separate tools, you get generic answers. CustOS connects them, so the AI teammates work from your numbers.
Who it's for
Companies where client, advertising and financial data sits in several tools, and the leader can't see it all at once.
What's inside
We set up the parts that pay off for you. We decide that together in the assessment.
Morning Brief
One screen each morning: what needs you, how much money came in, which client needs attention.
Client Hub
Emails and bookings land on the right client automatically, with a draft reply.
Lead Finder
Describe who you're looking for and get a cleaned, verified company list. The system flags who may be contacted by email.
Phone Assistant
It picks up when the team is busy, answers, and adds the appointment to the calendar.
Ads
Copy and images from your own data, with ad results in one place alongside revenue.
How is it different from a ChatGPT subscription or custom software?
ChatGPT sees what you paste into it. Custom software only does what you ordered. CustOS works from your business's own data, and we operate it.
| Question | AI subscription | Custom software | CustOS |
|---|---|---|---|
| What does it see of your business's data? | What you paste into it | What gets built for it | The data in the tools chosen during the assessment |
| What does it take on your side? | Everyone learns it alone | A developer or outside project | No developer, we train your team |
| Who monitors and fixes it? | Nobody | Whatever you agree separately | We do, with monthly operation and a monthly report |
| Who decides on outgoing emails? | Whoever typed the question | However it was built | You approve them |
How we get started
Strategy
We look at your processes and data, and give you a written roadmap of where to start.
Setup
We map your workflows and set up the system on your own accounts, tailored to your business.
Training
On-site training so the team uses it day to day. If you'd like, we also prepare internal AI leads.
Operation
For a monthly fee we monitor and extend the system, with a monthly report on what it delivered.
Frequently asked questions about CustOS
What is System Lab?
System Lab (also written Systemlab) is a Budapest company that brings artificial intelligence into Hungarian businesses: it finds where AI will pay off most, builds CustOS, trains the team and keeps the system running. Its founder is Bendegúz Tóth, and its website is systemlab.hu.
What is CustOS?
CustOS is the custom operating system we build around your business. Your key data comes together in one place, and AI teammates work on top of it. We set it up in your own accounts, train your team and run it for a monthly fee.
What do I get from the free assessment?
We look at your processes and data, tell you where AI will pay off most, and what to start with. You also get the assessment in writing, even if you don't continue with us.
Where is our data stored?
In your own accounts. We only ask for the access we need, and before setup we write down what data is used, by whom and for what.
How long until it is up and running?
We give you the start date of the first part in writing after the assessment. The time for the full system depends on the size of the company.
Don't need the whole system?
Let's find the parts that matter most and build in just those, TODAY at half price. You get the assessment in writing.