10+ years of engineering experience · Budapest · Since 2013

AI consulting from senior experts

Enterprise AI adoption with agent-based workflows, private RAG systems, and AI assistants — with us, advice becomes a working system, not a PowerPoint.

  • 100+ delivered projects · 13+ industries · senior-only team (8+ yrs each)
  • Private RAG — audit data stays in your own tenant, no data leakage
  • A 30-minute call → a 1-page proposal by email within 48 hours
Familiar situations

Many companies already use AI — few know where it truly pays off.

The question is not whether your company uses AI — it is whether it delivers measurable business results, runs securely, and is applied in the right places.

Problem · 01

"We don’t know where to start with AI adoption"

Plenty of ideas, but nobody knows which will pay off quickly and which won’t.

Solution

AI Readiness Audit + Opportunity Map — we map which of your processes hold real business potential.

Problem · 02

"We use AI, but we don’t measure the results"

Employees already use ChatGPT / Copilot, leadership expects efficiency gains, but there is no data.

Solution

AI Efficiency Assessment — time savings, error rates, and output quality measured with KPIs.

Problem · 03

"Our developers paste customer data into ChatGPT"

The dev team uses AI tools — but unchecked; the codebase and customer data may end up in public models.

Solution

Private RAG + zero-data-retention enterprise AI tooling — data stays in your own tenant.

Problem · 04

"Our legacy systems are slowing us down"

5–10-year-old systems, key-person dependency, missing documentation, hard to change.

Solution

AI-assisted legacy rewrite — code analysis, documentation, and modularization in an agent-based workflow.

Problem · 05

"We have a lot of internal knowledge, but it’s hard to search"

Thousands of documents, policies, contracts, support tickets — search is slow, reuse is hit-or-miss.

Solution

Private RAG + enterprise AI assistant — structured, verifiable, permission-aware answers on internal data.

Definition · in 1 paragraph

What is enterprise AI consulting?

Enterprise AI consulting (also known as AI consulting for companies, AI adoption consulting for businesses or corporate AI consulting) is a service where an expert team designs and implements agent-based workflows, private RAG (Retrieval-Augmented Generation) systems and AI assistants in an enterprise environment. Unlike classic consulting, the end result is not a strategy document but a working system — the strategy, the prototype, and the production-grade code all come from the same team.

Services · 6 engagement types

AI consulting services: audit, RAG, agents, production.

Not generic AI training. Business and technology decision support + production-grade implementation: where AI is worth using, what results to expect, what risks to plan for, and which first project to start with.

FEATURED
01 · Entry point · in as little as 5 days

AI Audit & Opportunity Map

Business process review, AI use case matrix with ROI estimates. 5 days, fixed fee.

Who is it for?

For CEOs and IT leaders who want to know where the real AI value is in their processes — without guesswork.

Deliverables
  • use case matrix (value × complexity × risk)
  • ROI estimate per use case
  • 30/60/90-day roadmap
  • 1-page executive summary
5 days5 000 – 10 000 €
FEATURED
02 · Our most common engagement

Private RAG (Retrieval-Augmented Generation)

An AI assistant working on your own documents — data stays in your tenant. Compatible with enterprise and corporate security policies.

Who is it for?

For companies with lots of internal documents (Confluence, SharePoint, Drive, contracts) where search and reuse are slow.

Deliverables
  • RAG architecture
  • embedding + LLM selection
  • permission layer (SSO, ACL)
  • pilot Q&A assistant
  • data privacy audit
3–6 weeks8 000 – 18 000 €
03 · Multi-step agents

AI agent development

Multi-step, tool-using agents (LangGraph, OpenAI Agents SDK, Claude). Customer support, CRM, reporting.

Who is it for?

For companies where the task is not a single prompt but multiple steps (query → decision → action → measurement) — and dozens of people do it manually today.

Deliverables
  • agent architecture
  • tool integrations
  • guardrails + evals
  • monitoring dashboard
  • production deploy
6–12 weeks15 000 – 60 000 €
04 · Email · chat · voice

Customer support automation

AI first-line support across email, chat, and voice channels. Typical result: 50–70% reduction in triage time.

Who is it for?

For support teams where 60–80% of the ticket volume is repetitive — and your people’s energy should go to the complex cases.

Deliverables
  • triage + classification agent
  • reply draft generator
  • human-in-the-loop interface
  • KPI dashboard (CSAT, AHT, deflection)
4–8 weeks12 000 – 30 000 €
05 · Internal knowledge · RAG

Internal document search

Private search + Q&A over your enterprise or company knowledge base (Confluence, SharePoint, Drive). RAG-based, with cited answers.

Who is it for?

For companies where new hires spend weeks hunting for knowledge and colleagues answer the same questions over and over.

Deliverables
  • connectors (Confluence, SharePoint, Drive, Notion)
  • permission-aware index
  • source-cited Q&A UI
  • analytics (what people search for)
4–6 weeks10 000 – 22 000 €
06 · Production-ready

PoC → Production transition

We take your existing AI prototypes to production: monitoring, evals, MLOps, infrastructure. In code, not in advice.

Who is it for?

For companies that have already built a PoC (in-house or with another vendor) but cannot operate it in production.

Deliverables
  • production-grade code refactor
  • CI/CD + evals
  • observability (Langfuse, Arize)
  • cost & quality dashboard
  • on-call playbook
4–10 weeks12 000 – 40 000 €
Pricing · 3 packages · audit → PoC → production

Fixed-fee audit and PoC. Production: custom pricing with a written SLA.

No "time-and-materials" tricks. The audit and the PoC are fixed-fee, with an outcome guarantee. Production implementation is custom-priced (typically €30–125k), with a written SLA.

Audit

from €3,800· 5 business days
FIXED FEE + outcome guarantee

You don’t know where to start yet. We assess AI readiness and prioritize use cases.

  • Process audit
  • 5–7 use case matrix
  • ROI estimate
  • 1-page proposal
  • Executive presentation
Request an audit
Most clients start here

PoC (Proof of Concept)

from €8,800· 4–6 weeks
FIXED FEE + outcome guarantee

You know where you’d start, but you’re not sure it will work. We build a live prototype and find out.

  • Working prototype
  • On real data
  • Success criteria
  • Cost model
  • Scaling decision point
PoC details

Implementation

custom pricing· typically 8–16 weeks
T&M or fixed with SLA

You know what you want and need a working system. From PoC to production.

  • Private RAG / Agent
  • Integrations (SAP, M365, CRM, app)
  • Production deploy
  • Monitoring + Evals
  • 3 months of support
Let’s talk
Process · 4 phases · 2–4 weeks

What does an AI Readiness Audit look like in practice?

Structured, documented, measurable. Every phase ends with a concrete deliverable — not a general impression, but something leadership can base a decision on.

01
week 1

Discovery

NDA, stakeholder interviews, data and system mapping, assessment of current AI tool usage.

  • interview notes
  • system architecture sketch
  • AI tooling inventory
02
weeks 2–3

Analysis

Identifying use cases, value × complexity × risk prioritization, ROI estimation.

  • prioritized use case list
  • ROI estimate
  • risk report
03
weeks 3–4

Proposal

Roadmap (30/60/90 days), pilot scope, technology stack recommendation, EU AI Act checklist.

  • 1-page executive summary
  • roadmap
  • pilot scope
  • compliance checklist
04
week 4

Handover

Executive workshop, Q&A session, decision support. Optionally: continuing with pilot delivery.

  • executive workshop
  • decision support material
  • go/no-go criteria
Comparison · 5 team types

AP4 Digital vs big AI consultancies, AI-only boutiques, and freelancers — which one to choose, and when?

Enterprise AI adoption has 4 typical vendor types: (1) big consultancies (Accenture, Deloitte, Capgemini, KPMG), (2) AI-only boutiques, (3) in-house attempts, (4) freelance consultants. Each has its place, but they fit different profiles. The table below helps you pick the right type for your task.

Criteria
AP4 Digital
10+ years of engineering + AI-native
Big consultancy
Accenture / Deloitte / KPMG
"AI-only" boutique
prompts + LLM only
In-house attempt
own team learning
Freelancer
1-person risk
Software engineering experience10+ years, 100+ projectsweak / via outsourcingminimal, few live projectsvaries, team-dependentvaries, 1 person
Concrete working system (not a deck)yes — production-grade codeno — mostly strategy documentsprototype / demo onlybuilt slowly, over monthsyes, but 1-person risk
Private RAG / on-prem deployyes — the default setupoptional, expensiverare, mostly on SaaS LLMsnew skill, long learning curvevaries by individual
Business ROI measurement (KPI framework)yes — on every engagementyes, at a high priceno — focus is on the techrarely — projects sliphit-or-miss, up for negotiation
EU AI Act compliance awarenessyes — in every audityes — in-house legal departmentsurface-level — focused on promptsnew topic — just starting to learnvaries, no guarantee
Fixed price / fixed deadlineyes — written SLAno — time & materialvaries, often slipsno — internal priorities decidevaries, conflict-prone
Lead time (to audit)2–4 weeks8–16 weeks (RFP, legal, SOW)4–6 weeksinternal priorities decide — unpredictable2–4 weeks
Price range (audit)€3.8–10k40–120 k €10–25 k €hidden — opportunity cost4–8 k €
Bus factor (1-person risk)team — multiple developers, documentedteam — large organizationsmall team — 3–8 peopleinternal team — your own risk1 person — critical dependency
Case study · private RAG

At a B2B SaaS company: 32 → 7 hours/week — support search time.

A private RAG built in 6 weeks, giving permission-filtered answers across 12,000 internal documents (policies, tickets, product knowledge). The data never leaves the client’s tenant.

143days
New product onboarding lead time
078%
Internal documentation coverage
327h/week
Support team search time
Timeframe
6 weeks — discovery + RAG pilot + production rollout
Stack
on-prem vector DB · zero-data-retention LLM · permission-filtering layer
Business impact
~€520,000 in annual savings (5-person support team · 25 h/week × €65/h)
Project lead
This project was led by
Péter — RAG architect, AP4 Digital
Have a similar project? Ask him directly.
Talk to Péter
−70% response time · 2× ticket close rate

"The AI customer service assistant cut average response time by 70% in 3 months — and our junior team now closes 2x as many tickets."

KP
Kovács Péter
Customer Operations Lead · Enterprise client (NDA)
LinkedIn
Why AP4 Digital · 7 differentiators

With us, advice becomes a working system. Not a PPT.

10+ years of software engineering

Not a slideware business. 100+ delivered projects across 13+ industries — what we recommend, we can also build.

AI-native way of working

Agent-based workflows, Claude Code, AI-assisted legacy analysis. 100% of the team uses them weekly.

Private RAG · data stays in your tenant

Zero-data-retention LLMs, on-prem or client-cloud deploys. Audit material, code, and business data never leave their owner.

EU AI Act-aware

The compliance deadline for high-risk systems is August 2026. We walk through the checklist in every audit.

Fixed price, fixed deadline, written SLA

The proposal is 1 page, the quote is detailed, the SLA is in writing. No "time-and-materials" tricks.

A second opinion, too

If we are not the right partner, we will say so — and recommend someone who is. The 30-minute call is worth something either way.

Hungarian and English working languages

100% of the team speaks English. We also work for international clients (DACH, UK, Nordics) — with time-zone overlap.

Sándor — founder, AP4 Digital
A message from the founder

"In AI consulting we hand over a working system, not a PPT — or we don’t put ourselves forward. If I feel another team would be a better partner, I’ll tell you that too."

SándorFounder · AP4 Digital · Since 2013
Team · senior · Budapest

A senior team that builds — not just presents.

We have worked together since 2013. 70% of the team is senior (8+ years), 100% speaks English, and every project includes someone who has shipped a live RAG / LLM system to production in the past 12 months.

"After the 30-minute call, we received the 1-page proposal within 48 hours. Concrete, with numbers — no generalities."

— CTO · B2B SaaS, ~80 people
AP4 Digital team
10+
years of software engineering
100+
delivered projects
13+
industries
4.9★
Clutch · 24 reviews
References · 30 projects

Our featured references.

15 featured projects — the full 30-project portfolio is on the References page.

Tourism · Mobile app2025

TMRW Hotels mobile app

A complete smart-hotel system — reception, room key and concierge in a single mobile app, from booking to check-out.

Case study
Education · Web development2025

Black Cell

Gamified e-learning platform for mandatory cybersecurity training — points, badges and leaderboards keep employees motivated.

Case study
Logistics · ERP2024

MÉH-SYS ERP

Waste management ERP — inter-site material flow, weighbridge integration and invoicing in a single system.

Case study
Transport · Municipal2024

BKK Integrated Taxi Registry

Budapest’s taxi licensing system — application, inspection, issuance and revision on a single authority interface.

Case study
UNIX Auto webshop
Automotive · E-commerce2024

UNIX Auto webshop

A complex parts catalogue with precise vehicle-type identification, B2B and B2C pricing logic and integrated logistics.

Case study
Transport · Mobile + Web2024

BKK Telebusz

Demand-responsive bus booking platform — passenger mobile app, driver interface and dispatcher console with real-time route optimisation.

Case study
Szakmavilag.hu
Education · Web portal2023

Szakmavilag.hu

Career orientation portal for young people — interactive career map, profession profiles, training opportunities and an institution finder.

Case study
Lina by VitaNet
Healthcare · E-commerce2023

Lina by VitaNet

Health webshop built for the US market with multi-currency payments and US-compliant shipping and privacy logic.

Case study
battanet.hu
Municipal · Web development2023

battanet.hu

The official municipal portal of the city of Százhalombatta — accessible and structured, with a tourism module.

Case study
Párom.hu mobile app
Mobile app · Dating2023

Párom.hu mobile app

The mobile app of Hungary’s leading dating service — chat, real-time notifications, profile matching and push-based activity logic.

Case study
Alcoa Wheels Europe
Automotive · B2B Mobile2023

Alcoa Wheels Europe

B2B wheel configurator on mobile — compatibility checking and order history for distributors and resellers.

Case study
Fashion Street mobile app
Tourism · Retail2022

Fashion Street mobile app

A downtown experience guide — shops, events, coupons, dining offers and map-based navigation on Budapest’s Fashion Street.

Case study
Corvinus TPM
Education · University system2022

Corvinus TPM

The system managing course programmes and model curricula at Corvinus University — with structured, searchable presentation.

Case study
Szakmasztar.hu
Education · Web portal2022

Szakmasztar.hu

Vocational education information portal — institution finder, training pathways, event calendar and customisable content modules.

Case study
SIMPLE.HU
Finance · Web development2022

SIMPLE.HU

A complete redesign of the SIMPLE payment platform’s marketing and product pages — focused on performance, brand and conversion.

Case study
View all 30 references
Free download · PDF · 12 pages

AI opportunity map — 7 use cases worth starting with today

Downloadable PDF (12 pages): the most common AI use cases in enterprise environments, with estimated ROI, implementation difficulty, and data security considerations. Broken down by industry (banking, retail, manufacturing, healthcare, HR, customer support, legal).

Privacy: we only send this PDF — no bulk mailing lists. You can unsubscribe anytime.

AP4 Digital
AP4 Digital · 2026
Free PDF · 12 pages

AI Opportunity Map

7 use cases worth starting with today — ROI, difficulty, data security.

BankingRetailIndustryHealthHRSupportLegal
Free · 30 minutes · no obligation

Let’s talk for 30 minutes about your AI plans. A 1-page proposal within 48 hours.

A structured assessment, a 1-page proposal (audit / efficiency / opportunity map / RAG / PoC), a detailed quote — or a professional second opinion if another team would be the right partner.

In 30 minutes
I review one or two of your business processes and tell you where the AI use case is.
Within 24 hours
I email you a summary of the call + 3 recommended directions.
Within 48 hours
A 1-page proposal: the exact AI use case + estimated ROI + PoC scope.
Either way
Under NDA if needed. In a private RAG. Your data stays in your own tenant.
30 minutes · free · under NDA if needed

Book 30 minutes. A 1-page proposal 48 hours later.

Sándor — founder, AP4 Digital
Who you’ll talk to
Sándor — founder, AP4 Digital
10+ years of software development · personally leads the discovery call

A structured assessment of your current AI situation, your business goals, and which of our services fits (or who else would be the right partner).

  • NDA immediately, if the topic is sensitive
  • A 1-page written proposal within 48 hours
  • A detailed proposal within a week
  • A second opinion if another team would be better
Frequently asked questions

What most people ask.

Enterprise AI consulting is a service where an expert team identifies, prototypes and implements AI use cases as production systems in a corporate environment. The difference from classic consulting: the deliverable is a working system, not a strategy document.