Company lists · Data refreshed September 2026

Top 25 Decision science consulting firms based in Paris, France

Name: Decision science consulting firms based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 73 companies tracked

RevenueBase identified 73 decision science consulting firms headquartered in Paris, France as of September 2026 and tracks 873 professional contacts across them, including 400 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers decision science consulting firms headquartered in Paris, France, 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 28, 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 28, 2026 86% judged on-target in blind review

73Companies

873Contacts tracked

400Verified emails

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The 25 largest decision science consulting firms based in Paris, France

Ranked by team size

Top 25 of 73 decision science consulting firms based in Paris, France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to decision science consulting firms: 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	Sibylone	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	168 contacts →
	Indirect evidence “SIBYLONE helps its customers to extract the full value from their data assets, a major strategic lever for development and profitability.” Source: RevenueBase Database · checked Sep 28, 2026
2	Artelys	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	158 contacts →
	Partial evidence “Artelys is a fast-growing company specialized in optimization, data science, and modeling.” Source: RevenueBase Database · checked Sep 28, 2026
3	Bluestone	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	69 contacts →
	Partial evidence “Bluestone est une société de conseil et de services spécialisée dans les métiers de la Data Science.” Source: RevenueBase Database · checked Sep 28, 2026
4	Demain	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	49 contacts →
	Indirect evidence “Les consultants et les datascientists de DEMAIN accompagnent les acteurs de la distribution, du tourisme et des médias dans - la définition de leur entreprise de demain -…” Source: RevenueBase Database · checked Sep 28, 2026
5	Yellowsys	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	48 contacts →
	Indirect evidence “Yellowsys est un cabinet de conseil qui accompagne ses clients dans leurs projets de transformation digitale et de mise en place de solutions décisionnelles.” Source: RevenueBase Database · checked Sep 28, 2026
6	Veltys	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	37 contacts →
	Partial evidence “Veltys is a strategy consulting firm for general management.” Source: RevenueBase Database · checked Sep 28, 2026
7	C-Ways	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	37 contacts →
	Strong evidence “C-Ways is a consulting company specialised in data sciences.” Source: RevenueBase Database · checked Sep 28, 2026
8	Exalt Value	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “eXalt Value est la filiale du groupe de conseil IT eXalt qui accompagne les entreprises dans l'exploitation et la valorisation de leurs data.” Source: RevenueBase Database · checked Sep 28, 2026
9	Data Reply FR	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	24 contacts →
	Indirect evidence “Data Reply is the Reply group company offering a broad range of analytics and data processing services.” Source: RevenueBase Database · checked Sep 28, 2026
10	MAO Conseil	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “MAO Conseil est un cabinet de conseil en stratégie data spécialiste dans la data intelligence.” Source: RevenueBase Database · checked Sep 28, 2026
11	Gradiant Groupe Rainbow Partners	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	17 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 28, 2026
12	Aldecis	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “At Aldecis, we redefine Business Intelligence and Decision Intelligence with cutting-edge AI solutions, turning every insight (automated discovery by AI) into decisive actions.” Source: RevenueBase Database · checked Sep 28, 2026
13	Solution BI	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	17 contacts →
	Partial evidence “Solution BI is a service and consulting company specializing in the fields of analytics, finance and business transformation, with a single mission: performance.” Source: RevenueBase Database · checked Sep 28, 2026
14	Solstice LAB	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “ADVANCED DATA & ANALYTICS SOLUTIONS, TAILORED TO YOUR NEEDS - Top-notch data scientist talents (graduates from Ecole Polytechnique, Mines ParisTech, Ecole Centrale…) dedicated to…” Source: RevenueBase Database · checked Sep 28, 2026
15	Corail Analytics	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Nous sommes votre partenaire pour conduire la transformation vers une organisation plus data-driven, en vous accompagnant à chaque étape du chemin.” Source: RevenueBase Database · checked Sep 28, 2026
16	Kayac Consulting	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “At Kayac Consulting, we believe that data represents a strong asset but it is mostly unknown, underused or under-qualified.” Source: RevenueBase Database · checked Sep 28, 2026
17	Solinum Consulting	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Solinum est une société de conseil spécialisée en nouvelles technologies.” Source: RevenueBase Database · checked Sep 28, 2026
18	Moonday	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Moonday Consulting est un cabinet de conseil en Data spécialisé dans la modélisation et l’analyse de données présent en France et en Suisse.” Source: RevenueBase Database · checked Sep 28, 2026
19	Pixelforest	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “From data collection to expert systems using machine learning, we provide our clients with a wide range of services enabling to leverage marketing data to produce value to the…” Source: RevenueBase Database · checked Sep 28, 2026
20	Dataltist	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Au sein du groupe Forsides, Dataltist est une équipe de data scientists et d’actuaires, des professionnels passionnés par les données, tirant parti des synergies avec les autres…” Source: RevenueBase Database · checked Sep 28, 2026
21	Data Connection	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Data Connection propose des solutions d'exploration, de modélisation et d'analyses de l'ensemble des données de ces clients pour leur permettre de faciliter leur prise de décision.” Source: RevenueBase Database · checked Sep 28, 2026
22	Datexon	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Datexon est un cabinet de conseil spécialisé en Data, notamment dans la gestion, l'analyse et l'optimisation des données pour le compte de nos clients.” Source: RevenueBase Database · checked Sep 28, 2026
23	Stat4decision	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “STAT4DECISION is a data oriented services company.” Source: RevenueBase Database · checked Sep 28, 2026
24	Polimetis	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Polimetis is a young consulting firm specialized in operational and financial data analytics.” Source: RevenueBase Database · checked Sep 28, 2026
25	Datasive	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “La DATA est un enjeu crucial pour vos métiers, néanmoins la data n’est pas aussi bien maîtrisée qu’elle le devrait, nous parlons beaucoup d’approche “data driven” mais pensez vous…” Source: RevenueBase Database · checked Sep 28, 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: decision science consulting firms. 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 decision science consulting firms.
Partial evidence: Its own public description names part of decision science consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decision science consulting firms. 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 25 of 73 decision science consulting firms based in Paris, France

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Decision science consulting firms based in Paris, France at a glance

As of Sep 28, 2026

45.8%Verified-email coverage

12.0Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole France list rather than for Paris, so it is reported there. Company counts and contact totals on this page are exact for Paris, over 73 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 decision science consulting firms, 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 Paris, France whose own description of what they do matches “decision science consulting firms”. 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 decision science consulting firms), 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 decision science consulting firms, and records with no verified work email. Companies headquartered outside Paris 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, 400 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 28, 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 decision science consulting firms, 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 decision science consulting firms are there based in Paris, France?

RevenueBase identified 73 decision science consulting firms headquartered in Paris, France 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?

Sibylone, headquartered in Paris, tops this list with the largest team on record.

Which city in France has the most decision science consulting firms?

Paris leads France with 73 headquartered companies, followed by Lyon (8) and Bordeaux (4).

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 400 verified decision-maker contacts tracked across these 73 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 28, 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.