Does Google penalise AI content?

What the policy actually targets

Google's spam policies cover **scaled content abuse**: generating many pages primarily to manipulate rankings rather than to help people. The wording is deliberately method-neutral — it replaced an earlier rule about "automatically generated content" precisely because the production method was the wrong thing to police.

A human content farm and an AI content farm are the same problem under this policy. A single carefully-made page drafted with AI assistance is not.

The practical test Google describes is whether the content exists because someone wanted to help a reader, or because someone wanted a ranking. That is a question about intent and quality, and it is not answerable by detecting a model.

What Google can and cannot detect

**It cannot read Anthropic's watermark.** Verification requires the provider's secret key. Google does not hold Anthropic's key, and no public detector exists. Whatever ranking systems Google runs, watermark detection is not among them.

**It does run quality and spam classifiers.** These are trained on signals of thin, duplicated, templated and unhelpful content. Generated text often trips them — not because it is generated, but because bulk-generated pages tend to be thin and templated.

**It sees the site, not just the page.** Publishing volume, internal linking patterns, and how much of a site is near-duplicate are all observable without reading a single word.

The distinction matters commercially: the risk is not that you get caught using a model, it is that you publish something indistinguishable from the thousand other pages generated for the same query.

What this means if you publish with AI

Publishing markup you did not intend to publish is a separate and more concrete problem. Pasting from a chat interface into WordPress, Ghost or Substack carries HTML — including provider class names — into your public source, where every visitor and every crawler can read it. That is not a ranking penalty, but it is a signal you did not choose to send, on a page you control.

The same applies to zero-width characters and non-standard spaces, which survive most paste routes and end up in your published text.

Our checker reports what is actually in a passage before it goes live. That is a hygiene step, not a ranking tactic, and it is worth keeping the two ideas separate — anyone selling AI-content cleaning as an SEO ranking fix is describing something Google has said it does not do.

The honest summary

There is no AI penalty to evade. There is a quality bar, and scaled generation is an efficient way to fall below it.

If a page would be worth reading had a person written it, its production method is not what is holding it back. If it would not be, no amount of rewriting or cleaning changes that.

Questions

Will Google deindex my site for using AI?

Not for using AI as such. Sites have lost visibility under the scaled content abuse policy, which targets mass-produced pages made primarily for rankings — a bar that human-written content farms also fall foul of.

Can Google detect the Claude watermark?

No. Detecting a distributional watermark requires the provider's secret key, which Anthropic holds. Google has no access to it and no published detector exists.

Should I run my posts through an AI detector before publishing?

There is little point. Those tools estimate from style, are unreliable in both directions, and their score is not an input to Google's ranking systems. Editing for quality and specificity is the useful version of that instinct.

Does cleaning AI artifacts help my SEO?

Not as a ranking factor. It stops you publishing markup and invisible characters you did not intend to publish, which is worth doing on its own terms — but it is hygiene, not a ranking tactic.