Most enterprise SEO teams treat JSON-LD as the finish line. Deploy the `@graph`, wire up the `parentOrganization` nodes, add the `sameAs` arrays, and call it done. The schema is clean. The entity is defined. The work is complete.
It isn't.
Cross-model retrieval tests across ChatGPT, Claude, and Gemini reveal a structural vulnerability that no amount of schema polish can fix: when your entity data lives exclusively in hidden JSON-LD blocks, you are betting your entire AI visibility on how a specific model's ingestion pipeline decides to handle your `
