Customer & Marketing
Generative search engines such as ChatGPT, Gemini, Copilot and Perplexity are transforming digital visibility. In this new context, Generative Engine Optimization (GEO) is becoming a key lever for brands to be cited, used and recommended by AIs. Two types of players are emerging to support this transformation: GEO agencies and GEO consultancies. Although they operate in the same field, their roles, methods and impact are very different.
GEO refers to the set of practices designed to make a company’s content usable by search engines. Unlike traditional SEO, which optimizes a page’s ranking in a SERP, GEO seeks to structure information so that an LLM can integrate it directly into a synthetic response. This involves working on entities, clarity of definitions, consistency of messages, reliability of sources and the ability of content to be summarized without loss of meaning.
A GEO agency is first and foremost an operational player. It transforms an existing strategy into concrete, measurable action, with a strong emphasis on the production and ongoing optimization of content.
Produce LLM-ready content (entity pages, structured FAQs, guides, comparisons)
Optimizing existing content for AI comprehension
Structure information (titles, hierarchy, explicit definitions)
Reinforce authority signals (citations, external sources, mentions)
Track visibility and citations in generative responses
👉 Dominant logic: execution, rapid iteration, short-term visible results
A GEO consulting firm intervenes upstream in strategic decisions. It helps companies structure their GEO approach in a coherent, sustainable and secure way.
Define a global GEO strategy aligned with business objectives
Identify key entities, critical intentions and risk areas
Designing the governance of content and knowledge
Prioritize investments between SEO, SEA, GEO and content
Define KPIs and executive management models
👉 Dominant logic: framing, internal alignment, long-term vision
| Criteria | GEO Agency | GEO consulting firm |
|---|---|---|
| Main role | Execution and production | Strategy and transformation |
| Time horizon | Short / medium term | Medium / long term |
| Type of deliverables | Content, optimization, monitoring | Strategy, governance, roadmap |
| Internal relations | Marketing, communication | Management, marketing, IT, legal |
| Approach to risk | Limited, operational | Structuring, reputational |
| Measuring value | Visibility, citations, traffic | ROI, business impact, steering |
The distinction between a GEO agency and a GEO consultancy becomes particularly clear when we analyze their approach to data, knowledge and performance. These two dimensions are central to GEO, as they directly condition a generative engine’s ability to understand, select and reuse information.
In GEO, data is not limited to keywords or pages: it corresponds to structured knowledge that can be exploited by language models. The difference between an agency and a firm lies in the degree to which this knowledge is structured and controlled.
A GEO agency works mainly with existing structures. It operates within a framework already defined by the company (website, CMS, corpus of content, key messages) and seeks to make them legible, coherent and exploitable by generative engines.
In concrete terms, GEO :
optimizes content already produced to improve understanding by LLMs,
applies standardized editorial and semantic schemes (explicit definitions, clear hierarchies, FAQ),
improves the clarity of entities (brand, product, expertise) without calling into question their definition,
focuses on IA readability and the ability of content to be summarized or quoted.
This approach is effective when knowledge is already relatively stable. On the other hand, the GEO agency generally has neither the mandate nor the legitimacy to arbitrate internal contradictions, redefine an official truth or decide between different business discourses.
The GEO consultancy operates at a more fundamental level: that of defining knowledge itself. We don’t just take existing content as our starting point, but also examine its coherence, hierarchy and reliability.
As part of this approach, GEO :
identifies and formalizes the company’s sources of truth,
defines which information is to be prioritized by generative engines,
structures knowledge around explicit entities, relationships and rules,
implements consistency rules to avoid contradictions between content, teams or channels,
integrates regulatory, reputational and business constraints.
This approach is crucial in complex or sensitive environments, as generative engines tend to amplify inconsistencies. The GEO consulting firm acts as a knowledge architect, while the GEO agency acts as an optimizer.
GEO performance is more than just visibility. It encompasses GEO’s ability to make a lasting contribution to brand, acquisition and value creation. Here again, the approach differs greatly between agencies and consultancies.
A GEO agency adopts an operational approach that can be measured in the short term. It relies on directly observable indicators in generative engines and analytical tools.
In particular, it measures :
brand presence in generated responses,
how often content is quoted or reused,
the appearance of content as an implicit or explicit source,
indirect effects on traffic, engagement and leads.
This measurement is essential for steering continuous optimization. However, it is often limited to surface signals, without always enabling GEO to be precisely linked to overall business performance.
The GEO consulting firm adopts a macro and strategic reading of performance. Its aim is to understand how GEO really contributes to corporate value.
With this approach, :
define KPIs aligned with business objectives (awareness, consideration, acquisition),
build attribution models integrating GEO with other levers (SEO, SEA, branding),
measures GEO’s impact on brand credibility and the reduction of commercial friction,
helps you arbitrate investments based on their real return.
This vision enables us to move away from a logic of simple visibility and make GEO part of a strategy of sustainable value creation.
the strategy is already clear and validated,
the aim is to speed up production,
the challenge is mainly operational,
visibility must progress rapidly.
the strategy has not yet been defined,
the brand is sensitive or regulated,
several teams must be lined up,
the stakes are structural and long-term.
In most organizations, the best GEO approach is based on a combination of both models. The GEO consulting firm defines the strategic framework, priorities and rules, while the GEO agency deploys these orientations in an operational and measurable way. This complementary approach delivers both speed of execution and strategic coherence.
The difference between a GEO agency and a GEO consulting firm lies not in the quality of the players, but in their function. A GEO agency is a lever for execution and visibility, while a GEO consultancy is a lever for structuring and management. The right choice depends on the company’s level of GEO maturity and its short- and long-term business objectives.