Google: fact-checking AI content is critical

Google changed its guide on using generative AI content on 1 October 2026. The page now says: “It is critical to manually factcheck and review all AI-generated content for accuracy and trustworthiness before publishing.” Google’s documentation updates page records the change as bringing in information from the Search Quality Raters guidelines.

Why is fact-checking critical?#

The guide gives the reason itself: generative models do not retrieve facts, they predict a likely sequence of words from their training data. Because of that, outputs may contain inaccuracies, also known as hallucinations. Google says the update keeps its documentation in sync with the presentations it gives at developer events.

Search Engine Roundtable reported the change and noted the document was last updated in October 2025. It also observed that Google rarely uses the word “critical” in Search documentation.

Does it cover more than text?#

Yes. The same review applies to metadata that can appear in Search results: title elements, meta description elements, structured data and alt text for images. For structured data, Google says to follow the general guidelines and the specific feature policies, and to validate markup to confirm eligibility.

You can check these in bulk with the bulk title and meta checker, the image alt text auditor and the JSON-LD validator.

What is scaled content abuse?#

The guide says that using generative AI to generate many pages without adding value for users may violate the scaled content abuse spam policy. It points to two sections of the Search Quality Raters guidelines: 4.6.5 on scaled content abuse and 4.6.6 on main content created with little to no effort, originality or added value.

Google adds that those guidelines are not a guide to ranking first, and that raters’ ratings do not directly influence ranking. For the current spam enforcement picture, see the September 2026 spam update. Search Engine Roundtable wondered whether that update targets such content; that is its speculation, not something Google has said.

Should you disclose AI use?#

The guide suggests sharing how content was created, such as background on how automation was used or image metadata, because it can help readers.

For ecommerce, Google Merchant Center has its own policies. AI-generated images must carry IPTC DigitalSourceType TrainedAlgorithmicMedia metadata. AI-generated product titles and descriptions must be specified separately and labeled as AI-generated.

What should publishers do now?#

The guide adds a review step and no new tool or setting. Put a named person on fact-checking every AI-assisted page, titles, alt text and markup included, before it goes live.

Related: Google adds a main content section to its helpful content page.