RAG consultingservices that end in a decision and a plan, not a slide deck.

Before you fund a retrieval-augmented generation project, find out whether RAG is the right approach, what it would take on your documents and what it would cost to run. Our engineers look at your data, your users' questions and your existing systems, then give you a written recommendation you can act on, with us or with anyone else.
Book a RAG consultation

Much of a RAG project is decided before anyone writes code.

Whether answers will be accurate depends on choices made in the first weeks: which sources go in, how documents are split, how access rights are enforced, how quality is measured and whether retrieval is needed at all. Those choices are cheap to change on paper and expensive to change in production. RAG consulting is the work of making them deliberately, with evidence from your own data.

What goes wrong when the approach is picked by default

01

RAG chosen because everyone uses it

The real need was a search box, a structured database query or a model that writes in a certain format. Retrieval adds cost and moving parts without fixing it.
02

Fine-tuning expected to teach facts

A fine-tuned model can pick up tone and format well, but it cannot reliably point to the source of a fact, and it does not learn about a policy change until it is trained again. Some teams find this out after paying for training.
03

The pilot used clean documents

The demo ran on a handful of tidy PDFs. The real corpus has scans, tables, duplicates and three versions of the same contract.
04

Nobody defined a good answer

Without a set of real questions and expected answers, every change is judged by gut feeling and the argument about quality never ends.
05

Permissions were left for later

If retrieval ignores who is asking, the assistant can quote a document the user was never allowed to open. Adding access control later can mean re-ingesting every document with its permissions.
06

Running costs were never modeled

Embedding, storage, reranking and model calls all scale differently. A design that is cheap for a pilot can be costly at full query volume.

Four questions we answer

Each one ends with a written recommendation and the reasoning behind it, so your team can challenge it.

Is RAG the right approach?

  • RAG vs fine-tuning vs long context vs plain search
  • Tested against your real questions
  • A clear no when retrieval is not needed

Will this architecture hold up?

  • Ingestion, chunking and indexing reviewed
  • Retrieval method and reranking checked
  • Access control and data flow traced end to end

Build, buy or combine?

  • Managed platforms compared with a custom pipeline
  • Model and vector store options shortlisted
  • Running cost modeled at your query volume

What will it take?

  • Phased roadmap with a first usable release
  • Team roles and effort per phase
  • Risks named, with a way to test each one early

Signs you should get RAG advice before you build

If two or more of these describe your situation, a short assessment usually costs less than a wrong first sprint.

1

Your team disagrees on the approach

One engineer wants RAG, another wants fine-tuning, a third says a long context window makes both unnecessary.

2

You are comparing vendor quotes

The proposals differ several times over in price and you cannot tell which scope is realistic.

3

A platform says it does this out of the box

You need to know whether a managed product covers your case or only the easy half of it.

4

A prototype exists and answers are uneven

It is right often enough to be promising and wrong often enough that you cannot ship it.

5

Leadership asked for a budget and a date

You have to commit to numbers and nobody in-house has taken a system like this to production.

6

Your data is sensitive

Legal or security wants to know where documents go, which providers see them and what the model can reveal.

What we do

RAG strategy and architecture consulting

Approach assessment

We compare RAG, fine-tuning, long-context prompting and conventional search for your use case and say which one, or which combination, fits.

Data and content readiness

We sample your sources and report what is usable as is, what needs cleaning and what should stay out of the index.

RAG architecture consulting

Ingestion, chunking, embeddings, keyword and vector retrieval, reranking and generation, designed for your data and drawn so your engineers can build it.

Review of an existing design

A second opinion on a pipeline your team or a vendor has proposed or built, with specific findings ranked by impact.

Build-vs-buy and vendor choice

We compare managed RAG products, cloud services and open-source components against your requirements, lock-in tolerance and budget.

Evaluation plan

How to build a test set from real questions, which retrieval and answer metrics to track and what score means ready to launch.

Security and access design

Document-level permissions at retrieval time, prompt injection exposure and rules for which providers may process which data.

Proof-of-concept prototype

Optional: a small working pipeline on a sample of your documents, so the recommendation rests on measured results and not on opinion.

What you have at the end

The outcome is something you can hand to your board, your engineers or another vendor.

A written recommendation

The approach we advise and the ones we ruled out

Evidence from your documents and questions

Open risks and how to test them

Plain language for non-engineers

A target architecture

Component diagram and data flow

Shortlisted models, stores and services

Where permissions are enforced

What to log and monitor from day one

A roadmap and estimate

Phases with scope and effort for each

Running-cost model by query volume

Launch criteria tied to the evaluation set

A build quote if you want us to do it

Tools we work with and advise on

Our own engineering stack is below. Vector databases, orchestration frameworks such as LangChain or LlamaIndex, and model providers are chosen with you for each project: we compare the options against your data, hosting rules and budget and do not push a fixed stack.

Python
FastAPI
PostgreSQL
React
AWS
Docker
Kubernetes
TypeScript
Who is this for

For people who have to sign off on a RAG project

CTOs and engineering leads

You need an outside view on an architecture before your team spends a quarter building it.

Heads of product

You want an AI answer feature in the product and need to know what is realistic, by when and at what cost.

Operations and support leaders

Your team answers the same questions from the same documents every day and you are weighing an internal assistant.

In-house teams new to RAG

Your engineers are strong on the product and want experienced guidance while they build their first retrieval pipeline.

Which decision are you facing?

RAG or fine-tuning

Which one solves your problem, or whether you need both.

RAG or long context

Whether your corpus is small enough to skip retrieval.

Build or buy

A custom pipeline or a managed product.

Which model and store

A shortlist that fits your hosting and data rules.

Is our design sound

An independent review before or after you build.

What will it cost

Effort to build and spend to run, by phase.

How a RAG consulting engagement runs

01

Questions and goals

We collect real questions your users ask, the answers you expect and what a wrong answer would cost you.

02

Data review

We sample your sources: formats, volume, quality, how often they change and who is allowed to see what.

03

Options and tests

We compare approaches and, where it settles a doubt, run a small prototype on your documents and score it against the questions.

04

Recommendation

You get the written report, target architecture, cost model and roadmap, and we walk your team through each of them.

05

Decision and next step

You build it in-house, buy a product, hire us to build it or stop. All four are valid results of the work.

How we work

Choose how to start

RAG Discovery Sprint

most popular

2-week fixed-price start

Fixed price.

For teams that need a decision on approach, architecture and budget before they commit to a build.

Use case and data review

RAG vs alternatives, with reasons

Target architecture and tool shortlist

Quick prototype on a data sample

Roadmap, risks and build estimate

Start with discovery

Dedicated AI team

Engineers working alongside your team

Monthly, team-based.

For companies that want the advice carried into the build, with our engineers working next to yours.

Architecture decisions made with your team

Python and backend engineers

Evaluation set and regular quality reports

Design and code reviews

Team size adjusted as the work changes

Discuss your team

AI products we've built and rescued

Data MANAGEMENT & payroll

AI Payroll Platform (NDA)

Europe

An AI-powered payroll validation platform that extracts data from salary slips, verifies payroll calculations, and automates reporting and approval workflows for HR and finance teams

Before
→
after
↓
Manual payroll validation
↑
17% fewer salary calculation errors
↓
Complex PDF extraction
↑
AI-powered PDF data extraction
↓
Manual approval workflows
↑
Automated payroll validation and reporting workflows
↓
 Limited processing scalability
↑
Scalable platform for payroll processing
AI Commerce PlatformE

QLode

USA
Europe

An AI-powered fashion commerce platform that helps retailers deliver personalized shopping experiences through virtual styling, AI recommendations, image search, and intelligent product discovery.

Before
→
after
↓
AI search didn't scale
↑
AI-based recommendation engine developed
↓
Scalable infrastructure needed
↑
Image & text search implemented
↓
Complex retailer integrations
↑
Multi-retailer integration architecture built
↓
Product discovery wasn't production-ready
↑
High-performance backend for AI-driven flows
AI CONSUMER APPS

AI Mobile Editors

Global
4M+
DOWNLOADS COMBINED
Before
→
after
↓
Existing  codebase required stabilization
↑
Both apps stayed instore
↓
AI features broken or misleading
↑
AI rebuilt to production quality
↓
App Store compliance at risk
↑
App Store compliance restored
↓
Reviews declining fast
↑
Product stabilized 

What clients say about working with Gilzor

Verified reviews from Clutch. The projects differ, the way we work is the same.

“They were incredibly fast and efficient at scoping the project and then delivered within very tight deadlines.”
Clement Nevoret CEO, Pointblank GmbH Mobile app development · $10,000 to $49,999 Verified review on Clutch
“I was impressed with how quickly we got a stable and well-designed product.”
Natalia Burakova Senior Product Manager, Impala Studios Mobile app development and support · $200,000 to $999,999 Verified review on Clutch
“The team met all commitments, aligning with our company's objectives.”
Verified client Individual entrepreneur, IT company Mobile app, API and UX/UI design · $50,000 to $199,999 Verified review on Clutch

The people you will talk to

Art Scherbakov
Art ScherbakovCo-Founder
Andrew Laminsky
Andrew LaminskyCTOLinkedIn
Yuri Rudenya
Yuri RudenyaHead of Mobile Development at GilzorLinkedIn
Alena Timofeeva
Alena TimofeevaProduct Marketing LeadLinkedIn

Make the most of the experienced team

We are a global team of
creative
and
strategic thinkers
who specialize in building custom digital products
from scratch. Our main goal is to
deliver high-quality solutions
that meet our clients' needs.
We are a global team of
creative
and
strategic thinkers
who specialize
in building custom digital products
from scratch. Our main goal is to
deliver high-quality solutions
that
meet our clients' needs.
Learn more
85%
recurring customers
12M
the biggest fundraising round by one startup
X3 MRR
growth of partner's business in 5 mos
2 weeks
for project start
5+ years
av. partnership duration with SMBs and product companies

Why Gilzor

Our advice comes from engineers who build and ship AI features in real products, so it is written to be built, not just presented.

What we bring

Engineers, not only advisors

We build web, mobile and backend products with AI and ML features, and the same people do the consulting.

Document AI on real data

On an AI payroll platform, our PDF data extraction and automated validation led to 17% fewer salary calculation errors.

Search experience

For QLode, an AI fashion commerce platform for the USA and Europe, we built image and text search and an AI recommendation engine.

Product track record

70+ products launched for startups, SMBs and product companies.

Clients who return

85% of our clients come back with new work.

What makes us different

No is an acceptable answer

If plain search or a simpler setup does the job, the report says so.

Evidence from your data

Recommendations are tested on your documents and questions, not on a generic benchmark.

Vendor-neutral

We compare tools on your requirements and explain every pick.

Yours to keep

The report, diagrams and prototype code are written so another team can take them and build.

Overlap with US hours

Our team in Europe shares part of the US working day for calls and reviews.

What our clients
frequently ask

What do your RAG consulting services include?

A review of your use case and data, a comparison of RAG with the alternatives, a target architecture, a build-vs-buy analysis, an evaluation plan, a running-cost model and a phased roadmap with an estimate. A small prototype on your documents is optional. You can also hire us for one part, such as a review of an existing design.

RAG vs fine-tuning: how do we choose?

Use RAG when answers must come from documents that change, need citations or depend on who is asking. Fine-tuning suits a fixed style, format or narrow task, and it does not keep facts current. A common pattern is retrieval for facts, with fine-tuning considered later for behavior; we tell you which applies to your case and why.

Do we need RAG if models now accept very long prompts?

Sometimes not. If your content is small, stable and the same for every user, putting it in the prompt can be simpler. Retrieval earns its place when the corpus is large, changes often, has per-user access rules or when cost and response time per query matter, because a long prompt is processed on every call. Prompt caching from model providers lowers the price of repeated content but does not make it free.

Should we build a custom pipeline or buy a managed RAG product?

A managed product is often the faster route for standard document Q&A over common sources. A custom pipeline makes sense when you need control over retrieval quality, strict permissions, unusual document types or specific hosting. We compare both against your requirements and show the cost and lock-in of each.

How long does an assessment take and how is it priced?

The usual format is a Discovery Sprint: two weeks at a fixed price agreed before we start. Projects can start in about two weeks. If you then want us to build, that work is quoted separately from the roadmap.

What do you need from us?

A sample of the documents, a list of real questions users ask, access to someone who knows the content and a technical contact who knows your systems and security rules. If you already have a prototype or a vendor proposal, we review that too.

Can you review a RAG system we already built?

Yes. We read the design and code, run your real questions through it and report where answers go wrong: source content, chunking, retrieval, prompts or missing checks. If you need measurement and fixes in depth, see our RAG evaluation and optimization service.

How do you handle our documents during the engagement?

We agree upfront which documents we see, where they are stored and which model providers, if any, may process them. Access is limited to the people on your project, and the prototype can run on a sample you select or inside your own cloud account.

No sales pitch

Tell us what you are deciding

Describe the use case, your documents and the options on the table. We'll suggest how to settle the question and send a quote. If you don't need RAG, we'll say so.

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