# Cornerstone: how AI models rank it, September 2026

GTM AI Recommendation Index, September 2026 Edition. Named in 3 judge labels across 2 categories by 2 of 12 models. Page: https://gtm-ai-index.com/vendors/cornerstone/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Customer education and LMS | 0% | 80 | 100% | 2 |
| Sales enablement and content | 0% | 64 | 0% | 1 |

## And against it

- "Internal LMSs (e.g., Workday, Cornerstone, or BambooHR) are built around employee hierarchies" (Gemini 3.5 Flash, Customer education)
- "Avoid using internal Employee LMSs for customer-facing education unless absolutely necessary." (Qwen 3.7 Flash, Customer education)

## The company

Cornerstone Research; https://www.cornerstone.com/; San Francisco, United States; founded 1989. From Wikidata, fetched 2026-09-14.

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, September 2026 Edition, gtm-ai-index.com.