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Buying question

Recommend an open-source vector database that an engineering team can self-host in its own cloud account.

Which brands each model API named when asked this question, and which pages it cited. Answer text is not published.
Snapshot Sep 12, 2026. Each category is re-run in rotation, every few weeks.

Recommendation

Kind of question

3

Model APIs

4

Brands named

11

Pages cited

Brands

Brands the answers named

Ordered by how many model APIs named the brand, then by mentions. A mention is not an endorsement or a position.
Rank#BrandModel APIsMentionsOwn-site citationsNamed by
1Qdrantqdrant.tech393OpenAI · Anthropic · Google
2Zilliz Cloud / Milvuszilliz.com393OpenAI · Anthropic · Google
3Weaviateweaviate.io372OpenAI · Anthropic · Google
4Redisredis.io313OpenAI · Anthropic · Google

Model APIs

What each model API returned

One row per model API. The hash identifies the exact answer without publishing it.
Model APIModelBrands namedCitationsDomainsAnswer hash
OpenAIopenai/gpt-4o-miniWeaviate · Qdrant · Zilliz Cloud / Milvus · Redis66ba4a3aa4…452b4
Anthropicanthropic/claude-haiku-4-5Weaviate · Qdrant · Zilliz Cloud / Milvus · Redis66b99c6762…33325
Googlegoogle/gemini-2.5-flashWeaviate · Qdrant · Zilliz Cloud / Milvus · Redis8750de5eca…f1ead

Sources

Pages the answers cited

Hostnames come from the URLs the answers returned. Best position is the earliest place a page was cited in an answer.
DomainCited pageBest positionCited byCitations
qdrant.techhttps://qdrant.tech/1OpenAI · Anthropic · Google3
openmetal.iohttps://openmetal.io/resources/blog/when-self-hosting-vector-databases-becomes-cheaper-than-saas/1OpenAI · Google2
firecrawl.devhttps://firecrawl.dev/blog/best-vector-databases1Anthropic1
milvus.iohttps://milvus.io/2OpenAI · Anthropic · Google3
redis.iohttps://redis.io/blog/best-open-source-vector-databases-comparison/3OpenAI · Anthropic · Google3
weaviate.iohttps://weaviate.io/platform3OpenAI · Google2
zenml.iohttps://zenml.io/blog/vector-databases-for-rag3OpenAI · Anthropic2
instaclustr.comhttps://instaclustr.com/education/vector-database/top-10-open-source-vector-databases/4Anthropic1
medium.comhttps://medium.com/@soumitsr/a-broke-b-chs-guide-to-tech-start-up-choosing-vector-database-part-1-local-self-hosted-4ebe4eec30456Google1
reddit.comhttps://reddit.com/r/Rag/comments/1r3y4ys/which_vector_database_do_we_like_for/7Google1
reddit.comhttps://reddit.com/r/vectordatabase/comments/1l7nppj/do_you_use_any_opensource_vector_database_how/8Google1
Snapshots
794067bc-f4fa-456f-8063-1db7efff0c35
Question set
vector-database-platforms-2026-07-27
Benchmark version
4-vector-database-platforms-2026-07-27-models-64232fd32583
What is kept
Measured in Vector DBs. Full answers are not stored or published, and no customer data is included.

See how often AI names you.

Enter your website. In about two minutes, Rank.ai asks ChatGPT, Claude and Gemini 12 questions your customers ask and grades how often they name you.

  • Your grade out of 100How often AI names you, cites your site, and how high it ranks you.
  • Who gets namedEvery competitor in the answers, most named first.
  • The pages AI readsThe sources behind each answer.
  • Three fixesWhat to fix first, with a brief for the first article.