# What is a vector database and when does a company need one?

Category: Vector Databases. Intent: informational. Top brand: AWS.

Page: https://slateindex.ai/prompt/what-is-a-vector-database-and-when-does-a-company-need-one-hzycigim23 · data of 2026-11-02

## Brands named

| Brand | Share of engines |
|---|---|
| PostgreSQL | 100% |
| Elasticsearch | 67% |
| AWS | 33% |
| Pinecone | 33% |
| Weaviate | 33% |
| Chroma | 33% |

## Sources

- amazon.com (4)
- google.com (2)
- assemblyai.com (1)
- atlan.com (1)
- cloudflare.com (1)
- couchbase.com (1)
- elastic.co (1)
- github.com (1)
- helix-db.com (1)
- ibm.com (1)
- intersystems.com (1)
- microsoft.com (1)
- milvus.io (1)
- pinecone.io (1)
- sofokus.com (1)
- spring.io (1)
- techcrunch.com (1)
- trychroma.com (1)
- weaviate.io (1)
- writer.com (1)

## Definitions

- Visibility (0–100): how often and how high AI answers name the brand, weighted by position.
- Mention rate: share of collected AI answers that name the brand.
- Share of voice: the brand's mentions as a share of all brand mentions in the category.
- Citation authority: share of answers naming the brand that cite the brand's own site.

Cite as: SlateIndex, “What is a vector database and when does a company need one?”, https://slateindex.ai/prompt/what-is-a-vector-database-and-when-does-a-company-need-one-hzycigim23, data of 2026-11-02. Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).