Claude can write a website, an app or a whole codebase, and in Claude Code it works directly in your files. SOSEI does one narrower job: it takes the domain you already own, crawls it and rebuilds it into a hosted site.
Run a free audit of your current siteClaude can build nearly anything you can describe. Claude Code works inside a real codebase, editing many files and running the builds, tests and deploys, so you own portable code you can host anywhere, and Claude Design turns your own design system into on-brand prototypes quickly.
SOSEI's own pipeline runs on Claude models, so the difference is not the model. It is everything around it: the crawl of your existing site, the website rules applied to every build, the hosting, and the reports after launch, which a general-purpose assistant leaves for you to ask for and run.
Structural differences only — no prices and no scores, because both change faster than this page does. One row goes to Claude.
| Capability | SOSEI | Claude |
|---|---|---|
| Starts from the website you already haveYou give a domain, not a blank canvas or a prompt. | Yes | Possible, but you configure it |
| Existing copy, images and brand carried overYour pages are crawled and rebuilt, not retyped into a template. | Yes | Possible, but you configure it |
| One-click rebuild of the whole site against current standardsYou trigger it — the pipeline regenerates against today's standards, not the ones in place when the site was first built. | Yes | No |
| Report of what AI assistants actually answer about youBuyer questions run against several assistants and scored. | Yes | Possible, but you configure it |
| llms.txt and an AI-crawler allowlist shipped with the site | Yes | Possible, but you configure it |
| Cookie consent banner in every published siteBuilt in on every page we serve — tracking scripts stay gated behind it. | Yes | Possible, but you configure it |
| Privacy, terms, cookie and accessibility pages generated | Yes | Possible, but you configure it |
| WCAG 2.1 AA contrast enforced by the rendererColor choices that fail the ratio are corrected before publish. | Yes | Possible, but you configure it |
| Fonts self-hosted, no third-party font CDN | Yes | Possible, but you configure it |
| Drag-and-drop visual editorSOSEI edits by chat and direct in-page tweaks instead. | No | Possible, but you configure it |
| Template gallery to browse and pick fromEach SOSEI site is generated for one brand, so there is nothing to browse. | No | Possible, but you configure it |
| Builds web apps too — logins, a database, custom logicSOSEI builds and hosts business websites: pages, a blog and a contact form, not apps. | No | Yes |
A dash means the capability is available but set up per site by the owner, rather than being part of every published page.
Before choosing between SOSEI and Claude, it helps to know what is actually wrong with the site you have. The 40-point audit scores it across SEO, AI discoverability, accessibility, privacy, mobile, performance and design.
Run the free audit