“A new colleague who never asks for lunch” — The Gree Hungary DocAI story

Everyone knows Gree air conditioners. On hot summer days they may be the very thing that keeps the office or your home liveable. What fewer people know: Gree’s official Hungarian general representative, Gree Hungary (Cool4u Kft.), headquartered in Szarvas, and its group of companies process 30–70 incoming documents per day behind the scenes — invoices, attachments, supplier certificates, declarations, contracts. Five departments, with 2–3 people in each working with these documents daily.

A year ago they were trying to keep this flood under control with a different DMS. Since May 2025, DocIT has been their primary document management system. Two months ago, a new kind of colleague joined the team: DocAI. The one that never asks for lunch.

This is their story — in the words of Sándor Erdei, Head of Finance.

The starting point: a paper mountain and a flood of questions

Anyone who has worked in the finance team of a growing SME knows the disease: every new document spawns a new question. Sándor summed up their old life like this:

“Who has the document right now? Why is the process stuck? Who filled it out incorrectly? Why hasn’t it been verified? Who was supposed to do this? …and I could go on.”

These aren’t rhetorical questions — they’re daily, real-world blockers that meant an invoice’s journey from inbox to archive could take several days. Verification and validation were done manually, one by one. Approval chains lived on paper, in email, and in people’s heads.

The previous DMS stored the files — but it could not understand their content.

The switch: when storage is no longer enough

Gree Hungary moved to DocIT in May 2025 — with the goal of running every document along a closed, traceable path from arrival to payment. Two months ago came the next level: DocAI took over manual data entry, document type recognition, and partner verification.

What does that mean in practice? The approval process now has an invisible first filter that no one used to enjoy doing by hand. In the background, DocAI cross-checks partner data against four authoritative public sources:

• NAV (Hungarian Tax Authority) — is the tax number valid, is the VAT status active
• IM (Ministry of Justice) — is the company under liquidation or bankruptcy
• VIES — is the EU VAT number valid
• KOMA — is the partner listed in the registry of taxpayers free of public debt

And the trivial-sounding but tedious checks are automatic too: are our own tax number and address correct on the invoice? The human approver receives a pre-validated invoice, not a raw PDF.

Gree Hungary uses the system across three related companies. Five departments, 30–70 documents a day — and the question is no longer “who has it”, but “when will it be done”.

The “before vs. after” that decides a business case

“The document arrives, and processing/verification happens within minutes. Then it can move to approval and payment, and finally to the archive. This used to take several days — now it can happen within the same day.”

This is the sentence that made the whole project worth starting. Document arrives on day T → document completes the full approval flow on day T. Approvers don’t receive tasks on paper, and they don’t open their inbox several times a day — they get a notification in a closed system when it’s their turn. Only then.

The numbers that matter

A case study is only worth what it can show in concrete data:

• 30–70 incoming documents per day — processed automatically with partner verification and type recognition.
• At least 1 hour saved per day on payments alone. DocAI uses key information extraction (KIE) to produce the payment package directly from the invoices, which the bank application imports as a single file. Previously 1–2 employees entered this manually; today it’s a few clicks.
• 3–4 month payback period for an organisation of this size.
• 0 new headcount. The transition didn’t require new hires; the freed-up time can be redirected to higher-value work.
• Near-error-free document handling — automated partner verification replaced the manual, one-by-one validation.

DocAI: the new colleague who never asks for lunch

We asked Sándor what DocAI means to him day to day. The answer is exactly the kind of line that could fit in a marketing slogan — except we didn’t come up with it:

“DocAI is our new colleague who never asks for lunch but delivers on every request. 😉 Trainable, very useful and fast, helps a lot with document processing.”

This is the essence of the technology. It doesn’t replace people — it frees them. Manual data entry, the “have we paid this already?” question, the “which folder is this in?” search all fade into the background. People can focus on what genuinely needs human judgment.

And the data? It stays at home.

At the management level, deploying an AI system is no longer a technology question but a compliance and risk question. Where are our invoices stored? Who sees the content of our contracts? Who has visibility into this data?

The language models behind DocAI run in K3’s own Hungarian cloud — not at international cloud providers, not on transatlantic servers. Corporate documents never leave the system boundary; inside, only those who need to see them can, governed by personal-, process-, and function-level permissions. GDPR-compliant and EU AI Act-compliant architecture — not a footnote, but a baseline assumption.

This is the factor that, for Gree Hungary — and for an increasing number of Hungarian mid-market companies — is not optional, but a hard requirement.

What can another mid-sized Hungarian company learn from this?

If anything was characteristic of the Gree Hungary team, it wasn’t their size — it was the document flood that’s the daily reality of every growing company. Dozens of invoices waiting to be entered. Approvals on paper, in email, or stuck in nobody’s inbox. Someone sitting down at the bank application and rekeying the data, one by one.

If any of this sounds familiar: what could a non-eating, non-tiring digital colleague take off your hands?

Sándor’s closing words

“Digital document management is the future, and DocIT has laid down its foundations. Easy to use, fast, compliant with regulations — and behind it stands a supportive development team that helps with everything we ask. I can recommend it to SMEs and large enterprises alike.”

— Sándor Erdei, Head of Finance, Gree Hungary

Many thanks to our first customer, Gree Hungary, for sharing their experience with us.