Your site has reached a level of complexity that no-code can no longer handle

Advanced business logic, multi-country architecture, deep API integrations, and large-scale structured content. Astro gives you total control over your code, without the limitations of a visual editor. Every line is written for your specific needs, not to fit into a pre-made mold.

Your content deserves better than a generic CMS

Sanity structures your content as data, not as static pages. Your editorial, marketing, and product teams work on the same content, which is automatically deployed across your site, your app, and your landing pages. One source of content, as many destinations as you need.

Claude Code sits between you and the code, not just with us

This is the real shift compared to traditional custom development: Claude Code becomes the interface between your requirements and the implementation. A new feature, a new page, or a logic adjustment can be described in natural language, then coded, verified, and validated by our team before going live.

Votre logo

“Lorem ipsum dolor sit amet consectetur. Neque netus enim cursus sagittis elementum pellentesque etiam. Risus massa vestibulum et imperdiet eu. Sed facilisis nulla vel nisl turpis ultrices pellentesque.”

Mathieu M

CMO

Native performance, not optimized after the fact

Astro only loads JavaScript where it's needed. The result: Lighthouse scores above 95, without artificial caching or workarounds.

Content architecture that scales

Sanity structures your content as reusable blocks. Multi-language, multi-market, multi-platform: content adapts without being duplicated.

Claude Code, your interface with code

Claude Code turns natural language requests into actual code changes, supervised by our team. You get the responsiveness of a CMS applied to a custom stack.

Zero platform lock-in

You own your code. Hosting, CMS, frontend: every component is independently replaceable. You are never locked into a SaaS provider.

An autonomous editorial team

Sanity Studio is custom-configured so your content teams can work independently, with schemas designed for your organization, not generic fields.

Technical support & guidance

We document the architecture and train your technical teams to take over the project. You are never dependent on us to evolve your stack.

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4.9/5 • 97 reviews

The benefits of Webflow
for your website

We entrusted Gemeos with a full website redesign and migration, and everything went incredibly smoothly. What stood out most to us was the quality of the art direction: a truly premium, cohesive visual direction, with a clear visual identity and highly polished choices throughout — typography, colors, iconography, pacing, hierarchy, and more. You can tell they have great taste, and above all, a real eye for detail on every screen. On top of that, the team is incredibly responsive and very experienced: they know both design and the technical side inside out. I’d recommend them without hesitation.

David BERNARD

CEO & Founder @AssessFirst

Efficiency, structure, and performance. Gemeos managed to translate Avnear’s identity into a website that exceeded our expectations. Client feedback has been unanimous. The team showed remarkable agility in adapting to our requests and our high standards. A trusted partner we’d recommend without hesitation. Our site is a masterclass in building trust.

Charley Arod

Founding Partner. Asset & Risk Management @Avnear

A great experience with Gemeos on our website redesign. The team was responsive, attentive, and proactive from start to finish. The result perfectly reflects the image we wanted to convey.

Loïc Calvy

Co-founder @Bloomays

Thanks to the whole team, always going the extra mile to push the boundaries!

Florent Darrault

CMO @Cureety

Adaptability, Speed, Great communication, Specialist(s), Efficiency, Good vibes, Professionalism, Competitive pricing, Agility, Strong support, Analytical skills, Cutting-edge, Seriousness, Friendly, Responsiveness, Flexibility, Reliability, Expertise, Attentive, Creativity

Hugo Bouchillou

CEO @Cycle Events

Gemeos worked on the Webflow integration as part of our website redesign, with the goal of giving our Growth team back control over landing page creation and improving web performance and SEO. I highly recommend Sandro for his availability, responsiveness, teaching approach, and, above all, his understanding of our business needs.

Florian Corteel

SEO Manager @Finary

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Let's discuss

4.9/5 • 97 reviews

Most agencies make a great first impression and sell you the dream in those early conversations, but that illusion fades fast once the contract is signed. With Gemeos, it’s different. Gemeos are professional and genuinely committed to doing things right and fast. I really recommend them. And this is the first time I’ve ever recommended an agency.

Quentin Mayet

VP Marketing @Paradox

We worked with Gemeos in the summer of 2024 to redesign Modjo’s marketing site and better reflect the brand’s new positioning. The collaboration was incredibly efficient, the agency was highly responsive and adapted to every unexpected challenge. With limited resources on our side, right in the middle of summer, we launched the new site in just six weeks. Site visit engagement increased by 58%!

Thomas Beylot

VP Product @Modjo

“Gemeos are the perfect experts to take over your website from A to Z. Beyond being highly skilled, they were proactive and came up with great ideas throughout the project, a real plus! Thanks for this fantastic Openeat website redesign ;)”

Martin Catineau

Head of Market @Openeat

Really great working with you — you get up to speed really fast, and the process is frictionless 🔥

Kévin Moënne-Loccoz

VP of Product & Design @Lemlist

Sandro and his team are incredibly efficient and really attentive. They have a great grasp of their clients’ SEO challenges and always come up with the right solutions. Highly recommend

Jules Ratier

CEO @Koncile

Gemeos delivered a showcase website that met our standards, while still working within a pretty tight timeline. Their process was efficient, and they were available, attentive, and very responsive throughout the project. They’re a highly complementary and very capable duo. Highly recommend!

Thibaud Bertrand

Head of Marketing @Side

“Great Webflow agency. Available, attentive, and responsive. We brought them in to redesign our Nuant.com website, providing the Figma mockups. We’re very happy with the result, and their Webflow expertise is a real asset.”

Leo Carli

Product Marketing Manager @Nuant

We worked with Gemeos for several months on the redesign of our site and the launch of our new Taalent.ai offering in the U.S. market. The team was able to combine strategic vision, high-quality execution, and great responsiveness throughout the project. An effective collaboration that I’d recommend without hesitation.

Alexandre Duffaut

CEO @Noota

Charley Arod

Founding Partner. Asset & Risk Management @Avnear

Florian Corteel

SEO Manager @Finary

Thanks to the whole team, always going the extra mile to push the boundaries!

Florent Darrault

CMO @Cureety

David BERNARD

CEO & Founder @AssessFirst

Sacha & Sandro worked on the redesign and migration of our website with a few clear goals: create a unique, differentiated visual identity, clarify our message and value proposition, smooth out the customer journey, and ultimately generate more business opportunities. We’re very happy with the result, and the numbers speak for themselves. Sacha & Sandro are skilled, committed, conscientious, passionate, and they see things through to the end. I highly recommend them!

Idir AIT SI AMER

CEO @Tracktor

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WhattheFAQ?

Why choose Astro over Next.js or Webflow?

Astro only loads JavaScript where necessary, making it exceptionally high-performance for content-heavy sites like marketing pages, SEO-focused sites, blogs, and catalogs. Next.js remains relevant for highly interactive applications. Webflow is still the right choice for non-technical teams who want total autonomy without ever touching code. The choice depends on your actual needs, not on a technological preference.

Dimension	Astro	Webflow
Performance	Zéro JS par défaut, scores Lighthouse élevés	Optimisée nativement, bon niveau
Autonomie contenu	Via Sanity Studio, nécessite un onboarding	Éditeur visuel, aucun onboarding technique
Logique métier avancée	Totale liberté de code	Limitée, nécessite du JS custom
Coût de licence	Aucun, hébergement à la conso	Abonnement mensuel selon plan
Ownership	Code et données 100% à vous	Dépendant de la plateforme Webflow

How does Sanity improve content management compared to a traditional CMS?

Sanity structures content as reusable data rather than static pages. The same content can power your website, a dedicated landing page, or a mobile app without any duplication. Schemas are custom-built for your organization, featuring a real-time preview system for your teams.

Axe	Ce que Sanity apporte
Structuration	Contenu modélisé en types et relations, pas en pages statiques
Collaboration	Édition en temps réel, plusieurs contributeurs simultanés
Réutilisation	Un contenu, plusieurs destinations (site, app, landing pages)
Personnalisation	Studio configuré sur-mesure selon vos besoins métier

How does Claude Code change custom development?

Claude Code changes two things. First, the initial delivery speed: implementation phases that traditionally took longer for custom builds compared to no-code are now accelerated, without sacrificing architectural rigor or testing. Second, and most importantly for the long term: after delivery, Claude Code remains in the loop between you and the code. Updates no longer require a new technical brief and a full development cycle—they are described, coded, and verified. Our team retains control over validation, but the turnaround time is significantly reduced.

Do I lose autonomy compared to Webflow?

Less than you might think. Sanity Studio covers standard editorial autonomy (text, images, structured content). For anything beyond content editing—a new section, a logic adjustment, an additional page—Claude Code bridges the gap between your request and the code: you describe the need, the implementation happens quickly, and it is verified by our team before going live. It is not the same type of autonomy as a visual editor, but it is no longer the slow pace of a traditional development cycle.

What types of projects are suitable for Astro + Sanity?

Type de projet	Adapté ?	Pourquoi
Site marketing à fort trafic SEO	Oui, cas d'usage idéal	Performance native, contenu structuré
Architecture multi-pays / multi-langues	Oui	Sanity gère nativement la localisation de contenu
Simulateurs, calculateurs, logique avancée	Oui	Liberté de code totale
Site simple, équipe 100% non technique	Non, Webflow reste préférable	Autonomie immédiate sans onboarding
Application SaaS complète	Partiellement	Pages marketing oui, cœur applicatif nécessite une stack dédiée

What are the rates for an Astro + Sanity project?

Pricing depends on the complexity of the content architecture, the volume of custom business logic, and the necessary integrations. This is positioned as a premium technical offering, with project costs generally higher than our standard Webflow projects. For an accurate estimate, a 30-minute discovery call allows us to define the scope.