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10 Best Custom Code Website Development Agencies for AI Cybersecurity Startups - October 2026

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Studio Maydit is the best fit for an AI cybersecurity startup that needs a custom code website, because one team designs the site, writes the code, and can stay on to design the product a security analyst uses every day. In order of fit, the ten studios worth reviewing are Studio Maydit, basement.studio, Phantom, Pixelmatters, Instrument, 8020, Refokus, SuperSkills, Digidop, and Flow Ninja. basement.studio and Phantom lead the other nine, as the only two whose main platform is custom code, and both show AI work. Digidop and Flow Ninja fit least: Webflow studios with partial AI proof. A plain warning: Refokus, 8020, Digidop, and Flow Ninja build in Webflow, not custom code, and Pixelmatters, Instrument, and SuperSkills list mixed platforms.

Think about a startup whose model reads cloud login logs and flags account takeovers. Last month its two researchers found a new phishing kit. They wrote it up with the bad domains, the file hashes, and a detection rule other teams could paste into their own tools. It became the company's most read post.

It also broke. On a phone, the page builder wrapped a 64-character hash across two lines. It turned the straight quotes in the rule into curly ones, so the rule failed when a reader pasted it. There was no copy button.

Security buyers read a research post the way an engineer reads code. A broken hash tells them the company is careless with detail, and detail is what they pay for.

The second job is the coverage page. Buyers ask which attacks your product catches, often in the first call. The true answer lives in the product's rule repository, which changes every week. The page on the site was typed by hand in the spring.

Custom code can fix both. Research posts can live in git next to the rules and be reviewed like code, and the coverage page can rebuild from the same source on every release. This ranking asks which studios can build that.

Most AI products look the same. Yours doesn't have to. Client logos: Sathi, Dualite, Chariot, Pixelflow, Accocorp. Book an intro call with Studio Maydit.

How we judged studios for a security company's coded site

Nobody paid for a place here, and no studio was contacted. We read each studio's pages and directory listings this month and scored five things.

  1. Whether the studio writes the code. Custom code ranked highest, mixed platforms sat in the middle, and Webflow or Framer shops ranked lowest for this brief, however good their design is.
  2. AI work, plus anything close to security. Named AI clients came first. Then we looked for clients in data protection, compliance, or infrastructure, whose buyers ask the same hard questions.
  3. Whether a minimum price is public. Yes or no only, never the figure. Security teams meet vendors who hide the price all the time.
  4. Team size against the work. A research section and a generated coverage page keep a designer and a developer busy for weeks. Is the studio big enough for that, and small enough that the people who pitch also build?
  5. The studio's own website. We opened each on a phone and checked speed, how code and wide tables show up, and how many outside scripts load.

The fifth test says a lot. A studio's own site is the one project no client changed. If it is sloppy with small details, expect the same on yours.

Each table row comes from the studio's site or a public directory profile. A private fact reads Not published, never a guess.

What goes wrong when a security startup hires a custom code studio

Research posts break the details readers copy. The blog editor turns straight quotes into curly ones, so a pasted command fails in the terminal. Long hashes wrap in the middle on a phone. A table of bad domains runs off the screen and hides its last column. There is no copy button. Each slip is small, but a security engineer reads every one as a sign of how your product treats detail. Ask to see a code block, a hash, and a wide table on a phone before design starts.

The coverage page is typed by hand and drifts. At launch it lists every attack technique the product detects, and it is right. Three months later the product catches forty more and has dropped a few, and the page still shows the launch list. A buyer checks it during a trial, finds the gap, and doubts the rest of the site. Ask for the page to be built from the file the product uses, so each release updates it.

The studio keeps the keys. The site runs on the studio's hosting account, the domain settings sit in its dashboard, and only its developer can deploy. Then a big breach hits the news on a Friday, and your researchers have a write-up ready in three hours. They wait until Monday for an outsider to publish it. Before you sign, ask for hosting, the repository, and deploy access in your own accounts from day one.

The Studio Maydit website: design partner for taste obsessed AI companies

1. Studio Maydit: A Top-Rated Design Agency for AI Founders

A security buyer judges a company by how it handles small details, and Studio Maydit designs for that reader on both sides of the login. It is a web and product design studio working with AI founders in the US, UK, and Europe. The studio builds in Framer, Webflow, and custom code, and picks custom code for a research-heavy security site, so posts sit in your repository. Once the site ships, the same people continue into product design.

The Dualite case study shows how that works for a technical product. Dualite is an AI dev tool, and the studio designed its website and its product side by side. Design work supporting a repositioned ICP helped it reach 100,000+ users in seven months. Recent clients also include Wave, PixelFlow, and Mi-VAD, plus 15 other AI and SaaS teams.

There are two ways to work together. A fixed scope runs three to four weeks and suits a team with a launch, a raise, or a conference date to hit. It ends with a diagnosis of what is leaking in the product, such as the screen where a trial user stalls before the first alert makes sense. Teams that publish research every month take a monthly retainer for new pages, campaigns, and product design, with no long lock-in.

CheckFinding
Based inRemote, serving US / UK / EU
Platform depthFramer, Webflow, and custom code
AI-sector proofYes. AI-native clients, published outcome on Dualite
PricingFixed scope or monthly retainer, quoted per project
Team shapeFounder-led, small senior team
Best fitAI security teams that publish research and want a coded site their own engineers can run

Send us your latest research post and your coverage page, and we will show you where a security reader stops trusting the site. Book a 30-minute call.

Tell us what you're building. We help companies like yours look and feel like a category leader. Book an intro call with Studio Maydit.

2. basement.studio

basement.studio writes custom code from Mar del Plata and Los Angeles, with 11 to 50 people and a published minimum. Its named clients are Vercel, Cursor, ElevenLabs, Harvey AI, and Scale AI. Vercel and Cursor sell to developers, the same people who read your research with a terminal open.

It names no security client, so the research layout and coverage page would be new ground for the team. Ask early who would staff your project.

CheckFinding
Based inMar del Plata, Argentina and Los Angeles, USA
Founded2018
Team size11-50
Primary platformCustom code
AI-sector proofYes. Published AI client work
Named clientsVercel, Cursor, ElevenLabs, Harvey AI, Scale AI
PricingPublished minimum
Best fitAI security startups selling to engineers who want a fast, coded site with real craft

3. Phantom

Phantom has built custom code from London and Auckland since 2013, with 51 to 200 people and published AI client work. SAP, Zendesk, the Financial Times, and Diageo are named clients. SAP is the kind of buyer a security startup hopes to land, and the London base suits sales into UK and European teams.

A team of 51 to 200 is shaped for large programs, so a lean research site may be a small job for it. Pricing is not published, and no security client is listed.

CheckFinding
Based inLondon, UK and Auckland, NZ
Founded2013
Team size51-200
Primary platformCustom code
AI-sector proofYes. Published AI client work
Named clientsDiageo, SAP, Financial Times, Zendesk
PricingNot published
Best fitFunded AI security companies selling to large enterprises, with a product that needs an interactive demo

4. Pixelmatters

Pixelmatters has worked from Porto since 2013, with 51 to 200 people and a published minimum. Its named clients are Rubrik, Quantic, and UJET. Rubrik sells data security and backup, the closest thing to a security client in this pool.

Its platform is mixed, so confirm its own developers would write the code. AI-sector proof is partial.

CheckFinding
Based inPorto, Portugal
Founded2013
Team size51-200
Primary platformMixed
AI-sector proofPartial. Data security and software clients, no AI case study
Named clientsRubrik, Quantic, UJET
PricingPublished minimum
Best fitAI security startups that want a team with security-adjacent client work and European working hours

5. Instrument

Instrument has worked from Portland since 2005 and names Nike, Microsoft, Electronic Arts, and Google as clients. That record suits a security startup after a large round that must now sit next to big vendors on a buyer's shortlist.

It is a premium studio with a mixed platform, not a confirmed custom code shop. AI-sector proof is partial, and team size and pricing are not published.

CheckFinding
Based inPortland, USA
Founded2005
Team sizeNot published
Primary platformMixed
AI-sector proofPartial. Large tech clients, no AI case study
Named clientsNike, Microsoft, Electronic Arts, Google
PricingNot published
Best fitLater-stage AI security companies that need a large brand and site program
Still scrolling? That's the problem. Every agency sounds the same until you see the work. See Studio Maydit's work.

6. 8020

8020 works from San Francisco and New York and was founded in 2014. Its named clients include Vanta, which sells security compliance software, along with Wave, Superlist, Pilot.com, and Circle. Vanta sells to the same compliance and security leads your site must win over.

It builds in Webflow, not custom code, so a coverage page built from your rules is outside its offer. AI-sector proof is partial, and team size and pricing are not published.

CheckFinding
Based inSan Francisco and New York, USA
Founded2014
Team sizeNot published
Primary platformWebflow
AI-sector proofPartial. Security and SaaS clients, no AI case study
Named clientsWave, Superlist, Pilot.com, Vanta, Circle
PricingNot published
Best fitAI security startups selling on compliance that are content with a Webflow site

7. Refokus

Refokus is a remote team based in Germany, founded in 2021, with 11 to 50 people. Mural, BASF, Spotify, Yahoo, and BCG are named clients. BASF and BCG are the kind of large buyers a security startup chases upmarket.

It builds in Webflow, not custom code, so your engineers would have to own any page that reads from the product. AI-sector proof is partial, and no price is published.

CheckFinding
Based inGermany, remote
Founded2021
Team size11-50
Primary platformWebflow
AI-sector proofPartial. Enterprise clients, no AI case study
Named clientsMural, BASF, Spotify, Yahoo, BCG
PricingNot published
Best fitEuropean AI security startups that want a polished Webflow site for enterprise buyers

8. SuperSkills

SuperSkills is a very small studio in Walnut Creek with one to ten people and published AI client work. Its one named client is The Cut. A tiny team means the person you talk to is the person who builds.

Its platform is mixed, so it is not a confirmed custom code shop, and one named client is a thin record to judge from. Founding year and pricing are not published.

CheckFinding
Based inWalnut Creek, USA
FoundedNot published
Team size1-10
Primary platformMixed
AI-sector proofYes. Published AI client work
Named clientsThe Cut
PricingNot published
Best fitPre-seed AI security founders who need a small site fast and can live without generated pages

9. Digidop

Digidop is a Paris studio founded in 2021, with one to ten people and a published minimum. TSE Energy, Ramify, and StreamNative are named clients. StreamNative sells data streaming tools to engineers.

It builds in Webflow, not custom code, and AI-sector proof is partial. A team this small leaves little room for a research section and product screens at once.

CheckFinding
Based inParis, France
Founded2021
Team size1-10
Primary platformWebflow
AI-sector proofPartial. Infrastructure and fintech clients, no AI case study
Named clientsTSE Energy, Ramify, StreamNative
PricingPublished minimum
Best fitFrench and European AI security startups with a simple site and a known budget

10. Flow Ninja

Flow Ninja is a Belgrade studio founded in 2018, with 11 to 50 people. A team of that size can staff a Webflow build quickly.

It ranks last here. It builds in Webflow, not custom code, AI-sector proof is partial, and it names no clients in public, so a security buyer's first question, who else trusts you, has no answer. Pricing is not published.

CheckFinding
Based inBelgrade, Serbia
Founded2018
Team size11-50
Primary platformWebflow
AI-sector proofPartial. No named AI case study
Named clientsNot published
PricingNot published
Best fitAI security startups that have chosen Webflow and need extra build hands

How to choose between them

Sort by what your site actually has to do.

Your research posts are your best lead source. You need code blocks and wide tables that survive a phone, and posts in git. basement.studio or Studio Maydit.

Enterprise buyers will review the site before a call. You need a team used to big-company clients. Phantom, or Instrument after a large round.

You sell on compliance and want a team that knows that buyer. Pixelmatters, or 8020 if a Webflow site is enough.

The budget is tight and the site is mostly words. Skip custom code for now. SuperSkills or Digidop, and plan to rebuild once you publish research every month.

One test before you sign. Ask the studio to put a long hash, a detection rule, and a ten-column table on a test page. Open it on your phone. If anything breaks, so will your research.

Trusted by AI companies dominating their categories. Book a call to see if design can be your unfair advantage. Book an intro call with Studio Maydit.

Frequently given answers

Sid, founder of Studio Maydit

Looking for something else?

Book a call with the founder.

Mostly AI and SaaS teams who have outgrown their design: a site that no longer explains what they do, a product people sign up for but do not stick with, or a launch coming faster than their team can design for. They need senior design without building an in-house team.

Websites and products. For websites: positioning, copy, design, and a Framer, Webflow, or code build that turns visits into demos and signups. For products: research, flows, UI, and a design system, so users get value sooner and engineers have clear designs to build from.

A senior designer, assigned from day one, works on your project with Sid, our design lead, who you meet on the discovery call. You talk to both of them directly in Slack and on reviews, and the same people stay with your project from start to finish.

You work directly with the designers on your project, and you can see progress in Slack and Figma as it happens. At the end of every project, we also give you a written note on what is working well and what we would improve next.

Hiring can be the right call once design is a constant need. Until then, one person rarely covers brand, website, product, and build, and a senior hire can take months to find. We cover all of these from the start, and you can scale us up or down as your roadmap changes.

It depends on scope: a fixed price for a defined project, or a monthly retainer for ongoing work. Book an intro call and we will send a clear quote after hearing what you need.

Fixed scope suits work with a clear end point, such as a website, a launch page, or a defined set of screens. A retainer suits design that needs to keep pace with a roadmap that keeps changing.

A focused landing page or homepage usually takes two to three weeks. A full marketing site takes about four to six. Custom illustration, heavy motion, or a custom code build adds time, and we agree the timeline before we start.

Mostly through Slack with regular check-ins, and everything happens in Figma where you can comment directly. You always know what is in progress and what ships next.

Yes. A single landing page, an audit, or one core flow is a good way to see how we work before committing to more. Plenty of longer partnerships started that way.

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