Image: OpenAI
Why it mattersA small internal tool or a shared demo can go from prompt to a shareable URL inside ChatGPT, with no deploy step, which is a cheaper path than spinning up a hosting account for a one-off page.
A small app vibe-coded inside a chat can now live at a public URL without a hosting account. OpenAI opened the public beta of Sites in ChatGPT on 1 October 2026, which turns a chat conversation into a published website, app or game on a free chatgpt.site subdomain. The feature page describes it as "from first prompt to published site with ChatGPT," and the Hacker News thread on the launch collected 247 points in a day.
A visitor describes the thing they want to build inside a normal ChatGPT chat, keeps refining it in that same chat, and then publishes when it looks ready. The published URL takes the form <name>.<user>.chatgpt.site. A commenter on the Hacker News thread who had already built a 3D viewer for microscopy data at mucus-atlas-viewer.pazimzadeh.chatgpt.site wrote that he had not known about the Sites feature until he published his project.
What ChatGPT hosts for you
The feature page lists several concrete things a Site can do that a static page cannot. A Site can save progress and uploaded files, so a visitor can return and continue work later. It can optionally offer "Sign in with ChatGPT" for a personalised experience, which the owner can also use to control who reaches a workspace Site. OpenAI says Sites shared inside a workspace start limited to the author and workspace admins. The page lists documents and images as supported upload types.
The hosting works on a free chatgpt.site subdomain by default, and OpenAI says a Site can also be moved to a custom domain the owner already controls. If the Site is moved, the old chatgpt.site URL redirects to the new address, according to the help text on the feature page.
Five plans in the beta, no new line item on the bill
Sites is in public beta on eligible ChatGPT Plus, Pro, Business, Enterprise and Edu plans, as described on the feature page. OpenAI does not list a separate fee for the Sites feature itself in the public materials, and says that limits and workspace controls "vary by plan and region." The company says it does moderation checks when a Site is saved.
The consequence for a team shipping internal tools
A team already builds small internal tools: a shared calculator, a one-page lookup against an export, a draft of a form before it goes to engineering. The usual pattern is to spin up a hosting account somewhere, deploy a static page, and hand around a URL. Sites cuts that path to a prompt and a publish button, inside the ChatGPT a team is already paying for. The question that then matters is who owns the URL, where the uploaded files sit, and what happens to all of it if a plan lapses. The feature page points at help pages for those answers; the terms are the right place to read before a working tool lives on a chatgpt.site address.
Source
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