Company lists · Data refreshed September 2026

Top 11 Prompt engineering services companies based in Belgium

Name: Prompt engineering services companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 25 companies tracked

RevenueBase identified 25 prompt engineering services companies headquartered in Belgium as of September 2026 and tracks 238 professional contacts across them, including 96 with verified work emails. Bierbeek is the largest hub.

This list covers prompt engineering services companies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

25Companies

238Contacts tracked

96Verified emails

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The 11 largest prompt engineering services companies based in Belgium

Ranked by team size

Top 11 of 25 prompt engineering services companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to prompt engineering services companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Catalay	Partial evidence	Antwerp, BelgiumHQ checked Sep 17, 2026	51-200	96 contacts →
	Partial evidence “Catalay is on a mission to build a highly skilled and loyal community of engineering consultants so we can partner up with our clients to accelerate their engineering transitions.” Source: RevenueBase Database · checked Sep 17, 2026
2	Absolem Engineers Engineering	Partial evidence	Turnhout, BelgiumHQ checked Sep 17, 2026	51-200	69 contacts →
	Partial evidence “Over the past 15 years, Absolem has evolved from an engineering consulting firm into a full-fledged high-tech engineering and technology partner for the manufacturing industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	Salta Energy	Indirect evidence	Isnes, BelgiumHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “SALTA ENERGY is the right partner for your project and installation in Oil & Gas.” Source: RevenueBase Database · checked Sep 17, 2026
4	CEDR	Indirect evidence	Antwerpen, BelgiumHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “CEDR biedt flexibele diensten, van technische evaluaties tot conceptuele ontwerpen, kostenramingen, tekenwerk en het opstarten van chemische procesinstallaties.” Source: RevenueBase Database · checked Sep 17, 2026
5	Lerner Engineering	Partial evidence	Brussels, BelgiumHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Lerner Engineering is a small sized company specialized in engineering consultancy, based in Brussels, Belgium.” Source: RevenueBase Database · checked Sep 17, 2026
6	Essi S.A	Indirect evidence	BelgiumHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
7	Alpha-Studieb.U.R.O. Bvba	Indirect evidence	Antwerp, BelgiumHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Ingenieursbureau bouwkunde, civiele techniek en geotechniek met meer dan 40 jaar ervaring in de uitvoering van industriële projecten, infrastructuurwerken met activiteiten…” Source: RevenueBase Database · checked Sep 17, 2026
8	Gp3d BV	Indirect evidence	Genk, BelgiumHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “GP3D is een onafhankelijk studiebureau, opgericht in 2020 door Marco Pibiri en Arjan Gorinsek.” Source: RevenueBase Database · checked Sep 17, 2026
9	Blockx, Peeters & VAN Looveren	Indirect evidence	Hoogstraten, BelgiumHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Op constructief en technisch vlak kan steeds beroep gedaan worden op het team van ingenieurs en EPB-verslaggevers van Atelier Blockx waardoor tijdens de ontwerpfase reeds maximaal…” Source: RevenueBase Database · checked Sep 17, 2026
10	Cohesian	Partial evidence	Hasselt, BelgiumHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Cohesian is een engineering consultancy door ondernemende ingenieursprofielen, die resources en diensten levert voor ondernemingen die op zoek zijn naar dynamische versterking.” Source: RevenueBase Database · checked Sep 17, 2026
11	Eastern Resources	Partial evidence	Brussels, BelgiumHQ checked Sep 17, 2026	1-10	1 contacts →
	Partial evidence “Eastern Resources is a dynamic and inclusive company that brings together a team of professionals with a wide array of skills to tackle a variety of engineering challenges.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: prompt engineering services companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names prompt engineering services companies.
Partial evidence: Its own public description names part of prompt engineering services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name prompt engineering services companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 11 of 25 prompt engineering services companies based in Belgium

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Prompt engineering services companies based in Belgium at a glance

As of Sep 17, 2026

40.3%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

8.0%Largest-city concentration · Bierbeek

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 25 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among prompt engineering services companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Belgium whose own description of what they do matches “prompt engineering services companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names prompt engineering services companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among prompt engineering services companies, and records with no verified work email. Companies headquartered outside Belgium are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 96 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names prompt engineering services companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many prompt engineering services companies are there based in Belgium?

RevenueBase identified 25 prompt engineering services companies headquartered in Belgium as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Catalay, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most prompt engineering services companies?

Bierbeek leads with 2 headquartered companies, followed by Brussels (2) and Antwerp (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 96 verified decision-maker contacts tracked across these 25 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.