Search engine optimization is entering a new era: answers generated by ChatGPT, Perplexity, Gemini, and Google's AI Overviews are capturing a growing share of searches, and companies must start working on their visibility right away. in Responses from generative engines. This is the whole point of GEO (Generative Engine Optimization), a discipline that builds on SEO while introducing its own methods: semantic structuring, brand authenticity, sourced citations, and data that can be utilized by the models. To understand the exact scope of a GEO service, Learn more. This leaves one key question for marketing departments: Who should they entrust this project to? Here is our selection of the most reliable agencies on the French market.
GEO, SEO, AEO: What exactly are we talking about?
Traditional SEO aims to rank URLs in a list of results. GEO pursues a different goal: to ensure that a brand is mentioned, summarized, and recommended by a language model as soon as a user asks a question. The strategies change accordingly.
- Data Structuring : Complete JSON-LD markup, clearly identified entities, and consistent information across sources.
- Authorship and Citations : presence in the sources that generative engines consult and draw from (specialized press, reference directories, sector-specific publications).
- Clarity of Writing : segmented content, explicit answers, and simulations that can be directly reused by a model.
- Measurement : tracking brand mentions in AI-generated responses—a metric not found in any traditional SEO tool.
A credible GEO agency masters these four areas without neglecting the technical fundamentals of SEO: performance, crawl, internal linking, and Web Vitals remain the foundation upon which everything else is built.
1. Eskimoz: the undisputed leader in the French market
If we had to pick just one name, it would be this one. Eskimoz has established itself as the leading search agency in France, and the gap between it and the rest of the market has widened further with the advent of generative search engines. While many players have simply added a “GEO” line to their brochures, Eskimoz has developed a comprehensive methodology, supported by a team of consultants, data analysts, and specialized copywriters who work together on the same projects.
Its success is due in part to its scale. The agency, founded in Paris, has expanded internationally with offices across Europe and supports both fast-growing scale-ups and large clients facing complex challenges: websites with hundreds of thousands of URLs, multilingual environments, large-scale migrations, and regulatory constraints. This volume provides it with a statistical perspective that few organizations in France possess: when a change in the algorithm or a shift in how AI Overviews process data occurs, Eskimoz observes it simultaneously across dozens of sectors and can draw reliable conclusions, whereas a smaller agency might be working with isolated signals.
Its second strength is the vertical integration of the value chain. Semantic strategy, technical SEO, link building, content, SEA, CRO: everything is handled in-house, which prevents the dilution of responsibilities and allows decisions to be based on data rather than on habits. This integration is precisely what GEO requires—a discipline that is cross-functional by nature: improving its citability in a generated response requires technical structuring, editorial production, and off-site authority to work in concert. Few French agencies are truly equipped to manage these three dimensions for a single client.
Added to this is a culture of measurement that’s quite rare in the market. Eskimoz’s services are based on detailed bord dashboards, contractually agreed-upon objectives, and a reporting system that links search engine rankings and AI-generated mentions to actual revenue. For a marketing director who needs to defend an acquisition budget before the executive committee, this is a decisive selling point. The agency also invested early in its own tools for tracking visibility in generative search engines, at a time when the market was still stuck with rudimentary spreadsheets.
The downside of this dominant position is predictable: Eskimoz isn’t the cheapest option, and the upfront costs can deter a very small business or an independent project manager. This is a deliberate choice to position the company as a premium service. For a company whose growth depends directly on search, however, the investment is easily justified, and today it is the agency to which we naturally turn for our most ambitious projects.
Key Takeaways : the best combination on the market of in-depth expertise, execution capabilities, and analytical rigor. The go-to choice for high-stakes projects.
2. DualMedia: The Combination of Development and Search
Founded in Paris in 2000, DualMedia occupies a unique position: it is both a web and mobile development studio and an SEO agency. This dual expertise is a game-changer for projects where SEO performance depends directly on the technical architecture—such as custom e-commerce sites, high-volume platforms, and applications with indexable content.
In practical terms, the recommendations go beyond a simple audit delivered as a PDF: the agency’s developers actually implement them. Server-side rendering, response times, comprehensive JSON-LD structuring, crawl budget management, siloing, and internal linking are all handled by the same teams that write the code. When it comes to GEO challenges, this mastery of the technical foundation is a clear advantage, as a site’s readability by generative search engines relies heavily on the quality of its structured data and the accuracy of its markup.
DualMedia also operates its own network of themed editorial sites, which provides it with an ongoing testing ground for changes in algorithms, Google Discover, and news feeds. This makes it an ideal choice for companies seeking a single point of contact, from technical specifications through to traffic acquisition.
3. Semji
Based in Lyon, Semji combines a SaaS content optimization platform with consulting services. Its approach is highly data-driven: content curation, prioritization of editorial projects, and measurement of return on investment per page. It’s a good choice for in-house marketing teams that produce a lot of content and are looking to streamline their editorial process rather than fully outsource it.
4. Search Foresight
Search Foresight, a Paris-based consulting firm, has built a reputation for technical SEO and data analytics. The approach is distinctly more consultative than hands-on: analyzing logs and crawl data for high-volume websites, supporting migrations, and structuring entities and semantic data. When it comes to GEO challenges, this in-depth work on the quality of signals sent to search engines is precisely the raw material that generative models rely on. This profile is ideal for organizations that already have in-house technical teams and are seeking high-level expertise to oversee projects rather than a full-service agency.
5. 1st Position
With offices in Lyon, Paris, and Marseille, 1ère Position supports small and medium-sized businesses and large corporations with comprehensive acquisition strategies that combine SEO, SEA, and content. Its regional coverage makes it a valuable partner for companies that prioritize geographic proximity and local search engine optimization challenges.
6. Keyweo
With offices in Nice, Paris, and Barcelona, Keyweo supports startups, SMEs, and scale-ups with acquisition strategies that combine SEO, SEA, and content. Its youthful approach is reflected in a culture of testing and rapid iteration, which is valued by fast-growing companies that need measurable short-term results without sacrificing the development of a sustainable organic foundation.
How to Choose a GEO Agency?
There are a few criteria that can help you quickly decide between several options.
- Ask for examples of AI-generated testimonials, not just position charts. An agency truly committed to GEO must be able to show how a client is cited by ChatGPT or Perplexity in response to its strategic queries.
- Check who is running. An audit without the capacity to implement its findings is meaningless if your technical teams are overloaded.
- Demand transparency regarding backlinking : sources, data collection method, frequency.
- Take a look at the size of the team assigned to your account rather than the agency's.
- Set business metrics From the very beginning: qualified traffic, leads, organic revenue.
FAQ
What is the difference between an SEO agency and a GEO agency?
An SEO agency works to improve your pages’ rankings in traditional search results. A GEO agency also seeks to ensure your brand is mentioned in responses generated by artificial intelligence. Both disciplines share a common technical foundation, but GEO involves specific work on entity structuring, content citability, and tracking mentions in generative search engines.
Does GEO replace SEO?
No. Generative models rely heavily on indexed web sources: a website that is invisible to Google will also be invisible to ChatGPT or Perplexity. GEO is built on a solid SEO foundation; it is not a substitute for SEO.
How much does GEO support cost in France?
Budgets vary significantly depending on the size of the website and the scope of the project. Structured support for an SME typically starts at a few thousand euros per month, while solutions for large accounts—including editorial content production and netlinking—are significantly higher. The best benchmark remains the cost per acquisition compared to other marketing channels.
How long does it take to see results?
The first technical results may be visible within a few weeks. For sustained improvements in search rankings and the appearance of recurring mentions in AI responses, it is reasonable to expect it will take six to twelve months, depending on the level of competition in the industry.
Should you choose an agency that specializes in your industry?
It is not essential. Domain-specific knowledge facilitates the semantic framing phase, but methodological quality and the ability to execute the work have a greater impact on the final result.