# Vector databases for small business buyers: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "vector database" and as "vector search database for AI applications", six framings each, to fourteen models with search on, on behalf of a small B2B company. Page: https://www.gane.ai/index/it/it-data/vector-databases/smb

**Standing:** pgvector leads with 35% of first choices; verdict contested. 69 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [pgvector](https://www.gane.ai/index/it/vendors/pgvector/index.md) | 35% | 0% | 69 |
| 2 | [Qdrant](https://www.gane.ai/index/it/vendors/qdrant/index.md) | 29% | 6% | 77 |
| 3 | [Pinecone](https://www.gane.ai/index/it/vendors/pinecone/index.md) | 19% | 35% | 77 |
| 4 | [Weaviate](https://www.gane.ai/index/it/vendors/weaviate/index.md) | 4% | 22% | 60 |
| 5 | [Chroma](https://www.gane.ai/index/it/vendors/chroma/index.md) | 4% | 21% | 52 |
| 11 | [Milvus](https://www.gane.ai/index/it/vendors/milvus/index.md) | 1% | 59% | 32 |
| 12 | [LanceDB](https://www.gane.ai/index/it/vendors/lancedb/index.md) | 0% | 6% | 16 |
| 50 | [Milvus / Zilliz Cloud](https://www.gane.ai/index/it/vendors/milvus-zilliz-cloud/index.md) | 0% | 70% | 10 |
| 51 | [FAISS](https://www.gane.ai/index/it/vendors/faiss/index.md) | 0% | 70% | 10 |

Rank is by share of first choices among all 51 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Pinecone, Qdrant; alternatives Supabase Vector
- GPT-5.4 mini: Pinecone, Qdrant; alternatives Milvus, Weaviate
- Gemini 3.5 Flash: Qdrant, pgvector; alternatives ChromaDB, Pinecone
- Perplexity Sonar: PostgreSQL with the pgvector extension; alternatives Pinecone, Qdrant, Weaviate
- Grok 4.20: Pinecone, pgvector; alternatives Chroma, Qdrant
- Mistral Small: pgvector; alternatives Pinecone, Qdrant
- DeepSeek V4 Flash: pgvector; alternatives Qdrant
- Llama 4 Maverick: Milvus; alternatives Pinecone, Qdrant, pgvector
- Qwen 3.7 Flash: pgvector; alternatives Pinecone, Qdrant
- Kimi K2: pgvector; alternatives Chroma, Pinecone, Qdrant
- GLM 4.7 FlashX: Qdrant; alternatives LanceDB, Milvus / Zilliz Cloud, Pinecone
- MiniMax M2.5: Qdrant, Weaviate; alternatives pgvector via Supabase
- GPT-6 Luna: pgvector; alternatives Pinecone, Qdrant
- Muse Glimmer 30B: Qdrant; alternatives Chroma, Pinecone, Weaviate, pgvector

## Sources the answers cite

70 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- github.com: 38 answers, 76 citations
- g2.com: 27 answers, 32 citations
- dev.to: 23 answers, 31 citations
- linkedin.com: 20 answers, 29 citations
- qdrant.tech: 15 answers, 17 citations
- geekflare.com: 15 answers, 15 citations
- dupple.com: 13 answers, 13 citations
- resources.rework.com: 12 answers, 16 citations

Pages named in the most answers:

- https://g2.com/articles/best-vector-databases (22 answers)
- https://geekflare.com/open-source/vector-database (15 answers)
- https://dupple.com/learn/best-vector-databases (13 answers)
- https://gane.ai/index/it/it-data/vector-databases/smb (12 answers)
- https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/anything-llm-tutorial/05-vector-stores.md (10 answers)
- https://liveblocks.io/blog/whats-the-best-vector-database-for-building-ai-products (10 answers)
- https://g2.com/categories/vector-database/small-business (9 answers)
- https://mixpeek.com/curated-lists/best-vector-databases (9 answers)
- https://linkedin.com/posts/e-gowtham_vectordatabase-rag-ai-activity-7480291469820542976--ROd (8 answers)
- https://riferrei.com/posts/2025-11-24-to-vector-or-not-to-vector-that-is-the-question (8 answers)

## Warned against

- Pinecone: 27 of 77 labels negative. "Avoid for now: Fully managed enterprise vector databases like Pinecone or Weaviate Cloud initially." (Qwen 3.7 Flash, budget prompt)
- Milvus: 19 of 32 labels negative. "Over-Engineered Distributed Systems (Avoid Until Scale)
Examples: Milvus (self-hosted)" (Qwen 3.7 Flash, negative prompt)
- Weaviate: 13 of 60 labels negative. "Avoid for now: Fully managed enterprise vector databases like Pinecone or Weaviate Cloud initially." (Qwen 3.7 Flash, budget prompt)
- Chroma: 11 of 52 labels negative. "not ideal for production due to potential stability issues, limited scalability, and security concerns" (Grok 4.20, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: pgvector at 35%.

- pgvector: 49% to 35%, −14. Cleared the floor by 3 points · rank 1 of 51, unchanged.
- Qdrant: 17% to 29%, +12. Cleared the floor by 1 point · rank 3 → 2 of 51.
- Pinecone: 24% to 19%, −5. Inside the floor by 6 points · rank 2 → 3 of 51.
- Weaviate: 5% to 4%, −1. Inside the floor by 10 points · rank 4 of 51, unchanged.
- Chroma: 5% to 4%, −1. Inside the floor by 10 points · rank 5 of 51, unchanged.
- Milvus: 0% to 1%, +1. Inside the floor by 10 points · rank 35 → 11 of 51.
- LanceDB: 0% to 0%, ±0. Inside the floor by 11 points · rank 6 → 12 of 51.
- Milvus / Zilliz Cloud: 0% to 0%, ±0. Inside the floor by 11 points · rank 34 → 50 of 51.
- FAISS: 0% to 0%, ±0. Inside the floor by 11 points · rank 23 → 51 of 51.

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.