AI Index / Vector database tools

Best Vector database tools

What AI assistants actually recommend when buyers ask about vector database tools — measured weekly across 4 engines, published as open data.

Updated 2026-08-02 · 70 sampled answers · rolling 4-week window · methodology

Rankings are measured from sampled AI answers — never editorial, never paid. Orbator builds AI-visibility tooling; when Orbator itself appears in any category, it is measured by the same rules as everyone else.

Updated weekly70 samples4 enginesmethodology

Sample: 70 AI answers · Window: Jul 5, 2026Aug 2, 2026 (4-week rolling) · trend vs prior 4 weeks (44 answers)

What is the best vector database tools?

Across 70 sampled AI answers from 4 engines, Milvus is recommended most often — appearing in 88.6% of recommendations, followed by Qdrant (88.6%) and Pinecone (85.7%).

This is a measurement of share of voice across 4 AI engines — not an editorial pick. See the full ranking below.

#ProductShareTrendEngines
1
Milvus

milvus.io

Best for: AI recommends Milvus most when buyers ask best managed vector databases for building semantic search and RAG applications (100% of those answers)

88.6%

95% CI 7994.1%

62 mentions · avg pos 5

first pick 17.7%

GROK 100%GEMINI 85.7%CLAUDE 57.1%PERPLEXITY 96.4%
Claim
2
Qdrant

qdrant.tech

Best for: AI recommends Qdrant most when buyers ask best vector database tools for AI and machine learning applications (100% of those answers)

88.6%

95% CI 7994.1%

62 mentions · avg pos 5.5

first pick 11.3%

GROK 100%GEMINI 78.6%CLAUDE 71.4%PERPLEXITY 100%
Claim
3
Pinecone

pinecone.io

Best for: AI recommends Pinecone most when buyers ask best managed vector databases for building semantic search and RAG applications (100% of those answers)

85.7%

95% CI 75.792.1%

60 mentions · avg pos 3.8

first pick 45%

GROK 100%GEMINI 71.4%CLAUDE 71.4%PERPLEXITY 100%
Claim
4
Weaviate

weaviate.io

Best for: AI recommends Weaviate most when buyers ask best managed vector databases for building semantic search and RAG applications (100% of those answers)

82.9%

95% CI 72.489.9%

58 mentions · avg pos 5.8

first pick 3.4%

GROK 100%GEMINI 82.1%CLAUDE 71.4%PERPLEXITY 82.1%
Claim
5
pgvector

Best for: AI recommends pgvector most when buyers ask best vector database tools for AI and machine learning applications (92.3% of those answers)

78.6%

95% CI 67.686.6%

55 mentions · avg pos 7.9

first pick 3.6%

GROK 100%GEMINI 82.1%CLAUDE 42.9%PERPLEXITY 78.6%
Claim
6
PostgreSQL

postgresql.org

Best for: AI recommends PostgreSQL most when buyers ask purpose-built vector databases vs vector search extensions on existing databases (92.3% of those answers)

70%

95% CI 58.579.5%

49 mentions · avg pos 9.2

first pick 0%

GROK 71.4%GEMINI 82.1%PERPLEXITY 75%
Claim
7
Zilliz

zilliz.com

Best for: AI recommends Zilliz most when buyers ask which vector database scales best for billions of embeddings (84.6% of those answers)

51.4%

95% CI 4062.8%

36 mentions · avg pos 5.6

first pick 11.1%

GROK 100%GEMINI 53.6%CLAUDE 28.6%PERPLEXITY 42.9%
Claim
8
HNSW

Best for: AI recommends HNSW most when buyers ask how do I choose a vector database for a production RAG pipeline (76.9% of those answers)

50%

95% CI 38.661.4%

35 mentions · avg pos 4

first pick 34.3%

GROK 71.4%GEMINI 71.4%CLAUDE 14.3%PERPLEXITY 32.1%
Claim
9
Chroma

trychroma.com

Best for: AI recommends Chroma most when buyers ask what should I use as a vector database for my LLM-powered search feature (100% of those answers)

50%

95% CI 38.661.4%

35 mentions · avg pos 10.9

first pick 2.9%

GROK 100%GEMINI 39.3%CLAUDE 42.9%PERPLEXITY 50%
Claim
10
Redis

redis.io

Best for: AI recommends Redis most when buyers ask open-source alternatives to managed vector database platforms (76.9% of those answers)

45.7%

95% CI 34.657.3%

32 mentions · avg pos 11.9

first pick 3.1%

GROK 57.1%GEMINI 57.1%CLAUDE 14.3%PERPLEXITY 39.3%
Claim
11
Elasticsearch

elastic.co

Best for: AI recommends Elasticsearch most when buyers ask purpose-built vector databases vs vector search extensions on existing databases (92.3% of those answers)

45.7%

95% CI 34.657.3%

32 mentions · avg pos 13.5

first pick 0%

GROK 57.1%GEMINI 60.7%CLAUDE 14.3%PERPLEXITY 35.7%
Claim
12
MongoDB

mongodb.com

Best for: AI recommends MongoDB most when buyers ask purpose-built vector databases vs vector search extensions on existing databases (84.6% of those answers)

42.9%

95% CI 31.954.5%

30 mentions · avg pos 11.1

first pick 6.7%

GROK 57.1%GEMINI 60.7%CLAUDE 28.6%PERPLEXITY 25%
Claim
13
Postgres

Best for: AI recommends Postgres most when buyers ask open-source alternatives to managed vector database platforms (53.8% of those answers)

37.1%

95% CI 26.848.9%

26 mentions · avg pos 8.2

first pick 7.7%

GROK 100%GEMINI 3.6%CLAUDE 42.9%PERPLEXITY 53.6%
Claim
14
OpenSearch

opensearch.org

Best for: AI recommends OpenSearch most when buyers ask best vector database tools for AI and machine learning applications (46.2% of those answers)

31.4%

95% CI 21.843%

22 mentions · avg pos 13.4

first pick 0%

GROK 71.4%GEMINI 35.7%PERPLEXITY 25%
Claim
15
Vespa

vespa.ai

Best for: AI recommends Vespa most when buyers ask best vector database tools for AI and machine learning applications (38.5% of those answers)

22.9%

95% CI 14.634%

16 mentions · avg pos 10.5

first pick 0%

GROK 28.6%GEMINI 28.6%CLAUDE 28.6%PERPLEXITY 14.3%
Claim
16
Firecrawl

firecrawl.dev

Best for: AI recommends Firecrawl most when buyers ask best vector database tools for AI and machine learning applications (53.8% of those answers)

21.4%

95% CI 13.432.4%

15 mentions · avg pos 9.4

first pick 6.7%

GROK 85.7%PERPLEXITY 32.1%
Claim
17
ZenML

zenml.io

Best for: AI recommends ZenML most when buyers ask how do I choose a vector database for a production RAG pipeline (46.2% of those answers)

21.4%

95% CI 13.432.4%

15 mentions · avg pos 15

first pick 6.7%

GROK 42.9%PERPLEXITY 42.9%
Claim
18
FAISS

faiss.ai

Best for: AI recommends FAISS most when buyers ask open-source alternatives to managed vector database platforms (61.5% of those answers)

18.6%

95% CI 11.229.2%

13 mentions · avg pos 7.9

first pick 23.1%

GROK 28.6%GEMINI 17.9%CLAUDE 14.3%PERPLEXITY 17.9%
Claim
19
Qdrant Cloud

qdrant.io

Best for: AI recommends Qdrant Cloud most when buyers ask best managed vector databases for building semantic search and RAG applications (69.2% of those answers)

17.1%

95% CI 10.127.6%

12 mentions · avg pos 8.9

first pick 0%

GROK 42.9%GEMINI 10.7%CLAUDE 14.3%PERPLEXITY 17.9%
Claim
20
LanceDB

lancedb.com

Best for: AI recommends LanceDB most when buyers ask open-source alternatives to managed vector database platforms (53.8% of those answers)

15.7%

95% CI 926%

11 mentions · avg pos 12.6

first pick 0%

GROK 42.9%GEMINI 14.3%CLAUDE 14.3%PERPLEXITY 10.7%
Claim
21
LangChain

langchain.com

Best for: AI recommends LangChain most when buyers ask how do I choose a vector database for a production RAG pipeline (38.5% of those answers)

15.7%

95% CI 926%

11 mentions · avg pos 14.4

first pick 9.1%

GROK 71.4%GEMINI 10.7%PERPLEXITY 10.7%
Claim
22
LlamaIndex

llamaindex.ai

Best for: AI recommends LlamaIndex most when buyers ask how do I choose a vector database for a production RAG pipeline (30.8% of those answers)

14.3%

95% CI 7.924.3%

10 mentions · avg pos 17.1

first pick 10%

GROK 71.4%GEMINI 7.1%PERPLEXITY 10.7%
Claim
23
pgvectorscale

Best for: AI recommends pgvectorscale most when buyers ask purpose-built vector databases vs vector search extensions on existing databases (38.5% of those answers)

12.9%

95% CI 6.922.7%

9 mentions · avg pos 8

first pick 0%

GROK 71.4%GEMINI 10.7%PERPLEXITY 3.6%
Claim
24
Turbopuffer

Best for: AI recommends Turbopuffer most when buyers ask best managed vector databases for building semantic search and RAG applications (30.8% of those answers)

12.9%

95% CI 6.922.7%

9 mentions · avg pos 12.9

first pick 0%

GROK 28.6%GEMINI 25%
Claim
25
DataCamp

datacamp.com

Best for: AI recommends DataCamp most when buyers ask best managed vector databases for building semantic search and RAG applications (46.2% of those answers)

12.9%

95% CI 6.922.7%

9 mentions · avg pos 16

first pick 0%

GROK 28.6%PERPLEXITY 25%
Claim
26
Instaclustr

instaclustr.com

Best for: AI recommends Instaclustr most when buyers ask open-source alternatives to managed vector database platforms (46.2% of those answers)

10%

95% CI 4.919.2%

7 mentions · avg pos 10

first pick 0%

GROK 28.6%PERPLEXITY 17.9%
Claim
27
Dev.to

dev.to

Best for: AI recommends Dev.to most when buyers ask purpose-built vector databases vs vector search extensions on existing databases (46.2% of those answers)

10%

95% CI 4.919.2%

7 mentions · avg pos 13

first pick 0%

GROK 14.3%PERPLEXITY 21.4%
Claim
28
RediSearch

8.6%

95% CI 417.5%

6 mentions · avg pos 10.2

first pick 0%

GEMINI 17.9%PERPLEXITY 3.6%
Claim
29
VectorDBBench

8.6%

95% CI 417.5%

6 mentions · avg pos 19.2

first pick 0%

GROK 85.7%
Claim
30
ScaNN

5.7%

95% CI 2.213.8%

4 mentions · avg pos 2.8

first pick 25%

GROK 14.3%GEMINI 3.6%PERPLEXITY 7.1%
Claim
31
Faiss (Facebook AI Similarity Search)

Best for: AI recommends Faiss (Facebook AI Similarity Search) most when buyers ask best vector database tools for AI and machine learning applications (38.5% of those answers)

5.7%

95% CI 2.213.8%

4 mentions · avg pos 7

first pick 50%

GEMINI 14.3%
Claim
32
DiskANN

Best for: AI recommends DiskANN most when buyers ask which vector database scales best for billions of embeddings (38.5% of those answers)

4.3%

95% CI 1.511.9%

3 mentions · avg pos 1

first pick 33.3%

GROK 14.3%GEMINI 3.6%PERPLEXITY 3.6%
Claim
33
lakeFS

lakefs.io

Best for: AI recommends lakeFS most when buyers ask what should I use as a vector database for my LLM-powered search feature (30.8% of those answers)

4.3%

95% CI 1.511.9%

3 mentions · avg pos 1

first pick 33.3%

GROK 14.3%PERPLEXITY 7.1%
Claim
34
YugabyteDB

yugabyte.com

Best for: AI recommends YugabyteDB most when buyers ask which vector database scales best for billions of embeddings (46.2% of those answers)

4.3%

95% CI 1.511.9%

3 mentions · avg pos 4

first pick 0%

GEMINI 7.1%PERPLEXITY 3.6%
Claim
35
Databricks

databricks.com

4.3%

95% CI 1.511.9%

3 mentions · avg pos 4.3

first pick 0%

GEMINI 7.1%PERPLEXITY 3.6%
Claim
36
TiDB Vector Search

pingcap.com

Best for: AI recommends TiDB Vector Search most when buyers ask how do I choose a vector database for a production RAG pipeline (30.8% of those answers)

4.3%

95% CI 1.511.9%

3 mentions · avg pos 9.5

first pick 0%

GEMINI 3.6%PERPLEXITY 7.1%
Claim
37
AWS

aws.amazon.com

4.3%

95% CI 1.511.9%

3 mentions · avg pos 13

first pick 0%

GEMINI 7.1%PERPLEXITY 3.6%
Claim
38
Supabase

supabase.com

4.3%

95% CI 1.511.9%

3 mentions · avg pos 24.3

first pick 0%

GROK 42.9%
Claim
39
Neon

neon.tech

2.9%

95% CI 0.89.8%

2 mentions · avg pos 3

first pick 0%

GROK 14.3%PERPLEXITY 3.6%
Claim
40
Cassandra

2.9%

95% CI 0.89.8%

2 mentions · avg pos 25.5

first pick 0%

GROK 14.3%GEMINI 3.6%
Claim
41
IBM API Connect

ibm.com

2.9%

95% CI 0.89.8%

2 mentions

first pick 0%

PERPLEXITY 7.1%
Claim
42
Apigee

cloud.google.com

1.4%

95% CI 0.37.7%

1 mentions · avg pos 2

first pick 0%

GEMINI 3.6%
Claim
43
Vectara

vectara.com

1.4%

95% CI 0.37.7%

1 mentions · avg pos 9

first pick 0%

GROK 14.3%
Claim
44
Azure API Management

azure.microsoft.com

1.4%

95% CI 0.37.7%

1 mentions · avg pos 15

first pick 0%

GEMINI 3.6%
Claim
45
Aerospike

aerospike.com

1.4%

95% CI 0.37.7%

1 mentions · avg pos 18

first pick 0%

GEMINI 3.6%
Claim
46
SQLite

1.4%

95% CI 0.37.7%

1 mentions · avg pos 34

first pick 0%

GROK 14.3%
Claim
47
Atlan

atlan.com

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
48
Couchbase

couchbase.com

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
49
Fastio

fast.io

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
50
Liveblocks

liveblocks.io

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
51
NVIDIA Canvas

nvidia.com

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
52
Northflank

northflank.com

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
53
OpenAlternative

openalternative.co

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
54
OpenMetal

openmetal.io

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

GROK 14.3%
Claim
55
RAGAS

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

GROK 14.3%
Claim
56
SourceForge

sourceforge.net

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
57
Timescale Cloud

timescale.com

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim
58
X (Twitter)

x.com

1.4%

95% CI 0.37.7%

1 mentions

first pick 0%

PERPLEXITY 3.6%
Claim

Reading the numbers: Share is a point estimate on 70 sampled answers, so each row also shows its 95% CI — the Wilson score interval around that share. When two products' intervals overlap, the gap between them isn't statistically meaningful at this sample size. First pick is the share of a product's recommending answers where it was named first, which separates “always mentioned” from “usually the top recommendation”. Full methodology.

Independence: Orbator customers are badged for disclosure. Customer status does not affect prompts, sampling, extraction, or ranking — see the methodology. Your product on this list? Claim it to see the prompts behind your rank and track it weekly.

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