China writes the first rulebook for GEO, and bans claims vendors already sell

China's advertising industry just published the world's first formal rulebook for generative engine optimization, the practice of paying a vendor to get a product mentioned favorably when someone asks ChatGPT, Gemini or a Chinese AI assistant for a recommendation. The five-part standard, issued by the China Association of Commercial Advertising and effective October 10, 2026, bans specific promises GEO vendors can no longer sell clients and sets minimum measurement and correction rules for the industry, according to Search Engine Journal's review of the standard documents.

What triggered it

The standard traces back to a single broadcast. On March 15, 2026, China's state broadcaster CCTV used its annual 3·15 Gala, a consumer-rights program, to expose an industry insider who had invented a smart wristband that did not exist. He used a hidden camera to describe the process: software generated more than a dozen promotional articles, then eleven more styled as expert reviews, industry rankings and user evaluations. When reporters later asked AI models to recommend a smart wristband, at least two models listed the fictional device among their top picks. CCTV's term for the practice, "AI poisoning," stuck. GEO vendors issued statements distancing themselves the next day, and China's market regulator named citation-based and AI-generated advertising an enforcement priority within the month.

A drafting committee met for the first time on April 29 in Beijing. By September 14, all five parts, numbered T/CAACCHINA 001 through 005-2026, were published on China's national group-standards platform. The roster of drafters is itself notable: Mininglamp, a Hong Kong-listed marketing technology company, led the pricing section, while content platforms Zhihu, Sohu, Weibo's operator and 360 also took part. Publicis Group is listed as a drafter of two of the five parts — a major Western agency network has already put its name to rules written for a market most of its clients don't operate in.

What the rules actually say

The standard is voluntary, not law, and carries no fine on its own. What it does is give buyers language to hold vendors to. Part 2 grades GEO service providers A through D across five assessment areas and applies a "one-vote veto": a vendor caught running black-hat GEO fails regardless of its other scores. Part 5 bans a list of specific claims, naming "absolute control of model output" and "100% screen dominance" as promises vendors can no longer make, and requires every contract to carry a formal appendix listing exactly what the vendor is not promising.

Part 3 covers pricing and measurement. In hybrid deals, the fixed fee covering content production, corpus building and monitoring must equal at least 30% of total contract value, with the rest tied to performance tiers. On measurement, the standard requires a minimum of 30 runs per reported level, on the logic that asking an AI model the same question twice can produce two different answers. Part 5 also sets a correction clock: when an AI engine states something wrong about a client's brand, the vendor must start fixing it within 72 hours, across its own content and the client's channels.

• Vendor assessment grades, A through D, with a one-vote veto for black-hat tactics
• A banned-claims appendix required in every GEO contract
• A 30%-of-contract-value fixed-fee floor in performance-based deals
• A minimum of 30 measurement runs behind every reported visibility figure
• A 72-hour clock to correct AI-stated errors about a brand

Who this affects

Directly, it affects any company selling into China through GEO vendors bound by the standard, and the GEO firms themselves, which now face a graded compliance bar. Indirectly, it affects every software marketer who has signed, or is about to sign, a contract with a Western GEO or "AI visibility" vendor promising a ranking, a citation rate or dominance in AI answers. China's rulebook is the first time anyone has written those promises down as things a vendor should not be allowed to claim. Nothing requires a Western vendor to follow it. But it is now the closest thing the GEO industry has to a working answer when a marketer asks what a fair contract should actually contain.

What a software marketer should do

None of that requires China's standard to exist in your own jurisdiction. It requires treating "we got you into the AI answer" as a claim that needs the same scrutiny marketers already apply to an SEO firm promising a page-one ranking by Friday. The wristband that didn't exist still got reviewed, ranked and recommended by real AI models. A fabricated product is just a dramatic version of a problem every GEO buyer already has: no agreed way to verify what a vendor says it delivered.