| Tier |
Typical use |
Supply |
Proof standing |
What the proof says |
Reference |
| 1 |
Internet & search discovery |
Google Search |
Confirmed + present |
Grounding with Google Search connects Gemini to real-time net content material, returning inline citations to supply URLs. |
Google — Gemini API docs, Grounding with Google Search |
| 1 |
Bing Search |
Confirmed + present |
Microsoft paperwork Bing outcomes getting used to reinforce Copilot responses. Not re-verified on this go. |
Microsoft Bing |
| 3 |
Frequent Crawl |
Confirmed historic |
GPT-3 used filtered Frequent Crawl as roughly 60% of its sampling combination; LLaMA 1 reported 67%. |
Frequent Crawl |
| 3 |
Historic net corpora (C4 and many others.) |
Confirmed historic |
C4 is a cleaned spinoff of Frequent Crawl; LLaMA reported C4 at 15% of its pretraining combination. |
TensorFlow Datasets — C4 |
| 4 |
Internet grounding providers |
Robust proof / doubtless |
Class inference protecting third-party grounding/retrieval intermediaries. No single canonical supply. |
— |
| 1 |
Merchandise & purchasing |
Google Service provider Heart |
Confirmed + present |
Service provider feed knowledge underpins Google’s purchasing surfaces. Retained on person instruction; Google Buying eliminated as it’s a floor, not a supply. |
Google Service provider Heart Assist |
| 2 |
Service provider / retail feeds (OpenAI) |
Confirmed + present |
Retailers share a safe, repeatedly refreshed CSV/JSON feed of identifiers, descriptions, pricing, stock, media and fulfilment so ChatGPT can floor merchandise precisely. Refreshes accepted as typically as each quarter-hour. |
OpenAI Builders — Agentic Commerce, product feeds |
| 4 |
Microsoft Service provider Heart |
Robust proof / doubtless |
Equal industrial feed infrastructure; inferred parallel to Google Service provider Heart quite than individually evidenced. |
— |
| 4 |
Market feeds |
Robust proof / doubtless |
Class inference. Shopify catalog knowledge is already built-in into ChatGPT, which helps the sample. |
OpenAI Assist — Buying with ChatGPT Search |
| 1 |
Native & locations |
Google Maps |
Confirmed + present |
Grounding with Google Maps is a documented instrument alongside Search grounding, giving fashions geospatial context. |
Google Cloud — Grounding API |
| 1 |
Google Enterprise Profile |
Confirmed + present |
Enterprise profile knowledge feeds Google’s native surfaces. Carried from the supply desk; not individually re-verified. |
— |
| 1 |
Yelp |
Confirmed + present |
Yelp licenses evaluations, photographs and enterprise data to OpenAI for real-time native suggestions. Past grounding it additionally drives actions: ChatGPT customers can e-book a desk or be part of a waitlist, and Request a Quote lets customers contact suppliers in-chat. Yelp’s 10-Q confirms it’s stay. |
Axios; Yelp weblog; Yelp 10-Q FY2026 |
| 4 |
OpenStreetMap |
Robust proof / doubtless |
Extensively used open geospatial corpus; inferred quite than confirmed for any named mannequin. |
— |
| 4 |
Foursquare |
Robust proof / doubtless |
Left in Tier 4 intentionally: the OpenAI deal is Yelp’s, and no equal proof exists for Foursquare. |
— |
| 4 |
Tripadvisor |
Robust proof / doubtless |
Class inference for overview/journey knowledge. No confirmed deal recognized on this go. |
— |
| 1 |
Information & reference |
Wikipedia |
Confirmed + present |
Explicitly current in GPT-3’s disclosed combination and LLaMA (June-Aug 2022 dumps, 20 languages); additionally broadly used as a stay reference/RAG corpus. |
Wikimedia dumps |
| 1 |
Wikimedia |
Confirmed + present |
Identical corpus household as Wikipedia. Licensing is unusually clear: principally CC BY-SA with attribution/share-alike obligations. |
Wikimedia dumps |
| 4 |
Wikidata |
Robust proof / doubtless |
Structured entity layer; strongly implied by knowledge-graph use however not individually confirmed. |
— |
| 1 |
Neighborhood / Q&A / social |
Reddit |
Confirmed + present |
The Google deal gave entry to the Reddit Knowledge API for ‘real-time, structured, distinctive content material’, and permits Reddit content material to be displayed throughout Google merchandise — i.e. stay grounding, not solely coaching. |
Tom’s Information (Google/Reddit deal) |
| 2 |
Reddit |
Confirmed + present |
Identical deal, coaching aspect: Google might use Reddit posts to coach its AI fashions and enhance providers reminiscent of Search; reported at roughly $60m/yr. NOTE: Reddit is reportedly weighing whether or not to resume — deal with as unstable. |
Fortune; Neowin/WSJ on renewal doubt |
| 4 |
Social platforms |
Robust proof / doubtless |
Class inference protecting platform-wide social corpora. |
— |
| 4 |
Boards / communities |
Robust proof / doubtless |
Class inference. Overlaps Reddit however generalised to non-Reddit boards. |
— |
| 1 |
Information & writer content material |
Dwell writer pages |
Confirmed + present |
Reached at inference time through search grounding quite than pretraining; retrieval choice and crawlability govern inclusion. |
Google — Grounding with Google Search |
| 2 |
Licensed writer content material |
Confirmed + present |
OpenAI has a number of express licensing partnerships (FT, Axel Springer, AP, Information Corp). Phrases differ per associate on coaching vs grounding vs attribution. |
OpenAI — FT content material partnership |
| 2 |
Writer partnerships |
Confirmed + present |
Axel Springer’s deal contains in any other case paywalled materials in solutions; AP licensed a part of its textual content archive. |
OpenAI — Axel Springer partnership |
| 3 |
Historic information corpora |
Confirmed historic |
Archive materials absorbed in pretraining; distinct from stay licensed entry. |
— |
| 2 |
Developer / technical |
GitHub |
Confirmed + present |
LLaMA used GitHub’s public BigQuery dataset, restricted to Apache/BSD/MIT tasks; The Pile individually contains GitHub. Public visibility shouldn’t be an open licence. |
GitHub |
| 2 |
Stack Overflow |
Confirmed + present |
Named in licensing-deal mapping alongside Reddit and Shutterstock as a knowledge platform powering a number of patrons. |
LLM Pulse — AI content material licensing offers mapped |
| 2 |
Technical docs |
Confirmed + present |
Vendor documentation corpora; broadly used however not tied to a single disclosed settlement. |
— |
| 4 |
npm / PyPI registries |
Robust proof / doubtless |
WEAKEST ENTRY IN THE TABLE. Relabelled from ‘package deal registries’ to call examples. No disclosed settlement or documented retrieval use discovered — take into account reducing. |
— |
| 1 |
Journey & commerce actions |
Google Lodge Heart feeds |
Confirmed + present |
When Gemini or AI Mode present lodge choices with real-time costs, that knowledge comes from the Google Resorts feed. In Aug 2026 Google added lodge reserving inside AI Mode accomplished with Google Pay, so that is grounding plus actions. |
TechCrunch — AI Mode journey replace |
| 4 |
Reserving / associate feeds |
Robust proof / doubtless |
Reserving Holdings and IHG are reported as members in Google’s agentic reserving pilot, which helps the route however stops wanting a documented feed spec. |
InfosTourisme (IHG/Reserving pilot) |
| 4 |
OTA / commerce sources |
Robust proof / doubtless |
Class inference. OTAs run their very own charge feeds into these surfaces. |
— |
| 4 |
Reservation / stock APIs |
Robust proof / doubtless |
Class inference protecting reserving/stock endpoints uncovered to brokers. |
— |