# Elasticsearch / OpenSearch: how AI models rank it, September 2026

IT AI Recommendation Index, September 2026 Edition. Named in 5 judge labels across 2 categories by 4 of 12 models. Page: https://it-ai-index.com/vendors/elasticsearch-opensearch/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Vector databases | 0% | 15 | 25% | 4 |
| NoSQL databases | 0% | 30 | 0% | 1 |

## What the models said for it

- "Choose Elasticsearch/OpenSearch if you already use them heavily for text search, logs, or analytics" (GPT-5.4 mini, Vector databases)
- "Need search/log analytics → Elasticsearch/OpenSearch" (GPT-5.4 mini, NoSQL)

## And against it

- "not ideal as a primary vector store at extreme scale" (GLM 4.7 FlashX, Vector databases)

## Record

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