Small Business AI
Can You Stop AI Companies From Training on Your Business Website? What's Changing
Google, Microsoft, OpenAI, and Anthropic agreed to support a shared way for sites to opt out of AI training. Here is what it does, what it does not, and when it matters.
By Kindloom Labs · November 1, 2026
What changed
On October 30, 2026, Google, Microsoft, OpenAI, and Anthropic said they will support a shared signal in robots.txt, the file that tells automated visitors what they may do, so a website owner can say they do not want their content used to train generative-AI models without writing separate rules for each company. The important catch is that this is a future rollout, not a working universal block today. The companies have given different timelines, from the coming months into 2027, and some have only started building it. The signal is about training specifically. It does not by itself control ordinary search indexing or whether an AI answer can cite your page.
The honest nuance
Three different things get blurred together, and they are not interchangeable. One is search engines indexing your site so customers find you. Another is AI companies using your pages to train models. A third is an AI assistant using your page to inform an answer, sometimes called grounding. The new signal targets training. Google has said that if a site uses the shared signal without also setting its existing Google-Extended control, Google may treat that as opting out of being used to ground answers in its AI products, which could affect how often you show up there. In other words, a blunt opt-out could cost you visibility you actually want. These controls are also requests that participating companies agree to honor, not a technical wall.
Why it matters for your business
If you have put real work into original content, product descriptions, photos, how-to articles, it is reasonable to want a say in whether it trains AI models. But most small businesses also want customers to find them through Google, Bing, and AI-assisted search. Those goals can pull in opposite directions, so the right setting depends on what you are trying to get from your website. This is a decision to make on purpose, not a box to tick because opting out sounds safer. And because the shared signal is not broadly live yet, editing your robots.txt today will not flip a universal switch.
What to actually do
Start by finding out what your robots.txt says now, or ask whoever runs your site. Decide what you actually want: for most businesses, keep normal search indexing open. If you want to limit AI training, plan to use the shared training signal once your providers support it, and watch the separate grounding controls so you do not accidentally reduce your visibility in AI answers. Do not hand-edit robots.txt based on a blog post, this one included. Have your web administrator make the change, confirm it against each provider's own guidance, and check your search traffic afterward. Keep anything truly confidential off public pages, because no setting reliably protects content once it is public.
From Kindloom Labs
If you want to be clear on what AI tools can and cannot actually do with your content first, the free Quick Read What AI Can and Can't Do is a plain-English starting point.
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