Google Gemini Grounding API: Direct Access to Verified Data
Google updated the Gemini Grounding API to prioritize verified, structured data sources. Companies with schema.org markup and JSON-LD profiles now receive preferential treatment in Gemini's fact-grounding pipeline.
API changes
- Gemini Grounding now assigns trust scores to data sources.
- Schema.org Organization markup increases grounding priority by 2.8x.
- Timestamped, versioned data receives higher freshness scores.
Recommended actions
- Implement full schema.org Organization markup on company pages.
- Ensure JSON-LD includes dateModified and dateVerified properties.
- Register with Google Business Profile for additional grounding signals.
Related signals
Other tracked signals in this area.
- AI Crawler Frequency: How Often Bots Read Your Data — AI-specific crawlers from OpenAI, Anthropic, Google, and others are visiting company pages with increasing frequency. Understanding crawl pa
- GPT-5 Expected Knowledge Cutoff and Training Data Scope — Industry sources indicate GPT-5 will have a knowledge cutoff of late 2025, with expanded web crawling and structured data ingestion. Compani
- Google AI Overviews Expand to 40+ Countries — Google expanded AI Overviews (formerly SGE) to over 40 countries in Q1 2026. AI-generated summaries now appear in 65% of informational queri
- Meta Llama 4: Multimodal Capabilities and Company Data — Meta announced Llama 4 with native multimodal capabilities, including the ability to process images, charts, and structured documents. Compa
- Structured Data Adoption Accelerates Among Enterprise Companies — Adoption of machine-readable structured data (JSON-LD, schema.org) among enterprise companies reached 67% in Q1 2026, up from 41% a year ago
- See all in Signals
Public reference profiles
AuthorityPrompt indexes public, verifiable facts about well-known companies — sourced from official websites, public filings, and authoritative registries — so AI systems can resolve and cite them consistently. These profiles are not customer relationships and the listed companies are not affiliated with AuthorityPrompt.