What AI assistants recommend when buyers ask about vector database tools — measured weekly across engines, published as open data.
Sample: 56 AI answers · Window: May 21, 2026 – Jun 18, 2026 (4-week rolling)
| # | Product | Share | Trend | Engines | |
|---|---|---|---|---|---|
| 1 | Milvus milvus.io | 92.9% avg pos 6.6 | — | GROK 100%CHATGPT 85.7%CLAUDE 100%PERPLEXITY 95.2% | Claim |
| 2 | Pinecone pinecone.io | 91.1% avg pos 4.5 | — | GROK 100%CHATGPT 90.5%CLAUDE 85.7%PERPLEXITY 90.5% | Claim |
| 3 | Weaviate weaviate.io | 87.5% avg pos 5.5 | — | GROK 100%CHATGPT 90.5%CLAUDE 71.4%PERPLEXITY 85.7% | Claim |
| 4 | Chroma trychroma.com | 51.8% avg pos 13 | — | GROK 57.1%CHATGPT 61.9%CLAUDE 71.4%PERPLEXITY 33.3% | Claim |
| 5 | pgvector | 50% avg pos 7.4 | — | GROK 71.4%CHATGPT 4.8%CLAUDE 71.4%PERPLEXITY 81% | Claim |
| 6 | Qdrant qdrant.tech | 46.4% avg pos 7.5 | — | GROK 57.1%CHATGPT 28.6%CLAUDE 57.1%PERPLEXITY 57.1% | Claim |
| 7 | FAISS | 37.5% avg pos 9.9 | — | GROK 42.9%CHATGPT 57.1%CLAUDE 42.9%PERPLEXITY 14.3% | Claim |
| 8 | Redis redis.io | 35.7% avg pos 16.4 | — | GROK 42.9%CHATGPT 66.7%CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 9 | Elasticsearch elastic.co | 26.8% avg pos 10.5 | — | GROK 28.6%CHATGPT 33.3%CLAUDE 14.3%PERPLEXITY 23.8% | Claim |
| 10 | PostgreSQL | 23.2% avg pos 6 | — | GROK 14.3%CHATGPT 4.8%CLAUDE 14.3%PERPLEXITY 47.6% | Claim |
| 11 | Zilliz zilliz.com | 19.6% avg pos 11.7 | — | GROK 100%CHATGPT 9.5%PERPLEXITY 9.5% | Claim |
| 12 | Qdrant Cloud qdrant.io | 17.9% avg pos 4.9 | — | GROK 42.9%CLAUDE 28.6%PERPLEXITY 23.8% | Claim |
| 13 | MongoDB Atlas mongodb.com | 16.1% avg pos 11.6 | — | GROK 71.4%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 14 | pgvectorscale | 12.5% avg pos 7.2 | — | GROK 57.1%CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 15 | OpenSearch | 12.5% avg pos 12 | — | GROK 28.6%CLAUDE 14.3%PERPLEXITY 19% | Claim |
| 16 | LangChain langchain.com | 10.7% avg pos 5 | — | GROK 71.4%CLAUDE 14.3% | Claim |
| 17 | GitHub Releases github.com | 10.7% avg pos 10.8 | — | GROK 28.6%CHATGPT 19% | Claim |
| 18 | LlamaIndex llamaindex.ai | 8.9% avg pos 5 | — | GROK 71.4% | Claim |
| 19 | LanceDB lancedb.com | 8.9% avg pos 14.6 | — | GROK 42.9%PERPLEXITY 9.5% | Claim |
| 20 | Microsoft Azure API Management azure.microsoft.com | 8.9% avg pos 18.3 | — | GROK 14.3%CHATGPT 19% | Claim |
| 21 | VectorDBBench | 8.9% avg pos 18.8 | — | GROK 71.4% | Claim |
| 22 | Databricks databricks.com | 7.1% avg pos 2.5 | — | GROK 14.3%PERPLEXITY 14.3% | Claim |
| 23 | Vespa vespa.ai | 7.1% avg pos 11 | — | GROK 14.3%CHATGPT 4.8%CLAUDE 14.3%PERPLEXITY 4.8% | Claim |
| 24 | Turbopuffer | 5.4% avg pos 8.5 | — | GROK 28.6%CLAUDE 14.3% | Claim |
| 25 | Annoy | 5.4% avg pos 15.7 | — | CHATGPT 14.3% | Claim |
| 26 | DiskANN | 3.6% avg pos 4 | — | PERPLEXITY 9.5% | Claim |
| 27 | YugabyteDB yugabyte.com | 3.6% avg pos 5 | — | GROK 14.3%PERPLEXITY 4.8% | Claim |
| 28 | Dragonfly | 3.6% avg pos 8 | — | PERPLEXITY 9.5% | Claim |
| 29 | Postgres | 3.6% avg pos 10 | — | PERPLEXITY 9.5% | Claim |
| 30 | ChatGPT openai.com | 3.6% avg pos 13 | — | GROK 14.3%CLAUDE 14.3% | Claim |
| 31 | Faiss (Facebook AI Similarity Search) | 3.6% avg pos 15 | — | CHATGPT 9.5% | Claim |
| 32 | Facebook facebook.com | 3.6% avg pos 16 | — | GROK 14.3%CHATGPT 4.8% | Claim |
| 33 | RediSearch | 3.6% avg pos 17.5 | — | CHATGPT 9.5% | Claim |
| 34 | AWS SNS aws.amazon.com | 3.6% avg pos 28 | — | CHATGPT 4.8%PERPLEXITY 4.8% | Claim |
| 35 | DeepLake deeplake.ai | 3.6% | — | CHATGPT 9.5% | Claim |
| 36 | Cloudflare Workers cloudflare.com | 1.8% avg pos 2 | — | GROK 14.3% | Claim |
| 37 | HuggingFace Transformers huggingface.co | 1.8% avg pos 3 | — | GROK 14.3% | Claim |
| 38 | Neon neon.tech | 1.8% avg pos 3 | — | GROK 14.3% | Claim |
| 39 | Supabase supabase.com | 1.8% avg pos 3 | — | GROK 14.3% | Claim |
| 40 | TiDB Vector Search pingcap.com | 1.8% avg pos 4 | — | CLAUDE 14.3% | Claim |
| 41 | CockroachDB cockroachlabs.com | 1.8% avg pos 5 | — | PERPLEXITY 4.8% | Claim |
| 42 | Timescale Cloud timescale.com | 1.8% avg pos 5 | — | PERPLEXITY 4.8% | Claim |
| 43 | Semantic Kernel | 1.8% avg pos 6 | — | GROK 14.3% | Claim |
| 44 | VDBBench | 1.8% avg pos 7 | — | GROK 14.3% | Claim |
| 45 | SQLite | 1.8% avg pos 16 | — | CHATGPT 4.8% | Claim |
| 46 | HNSWlib | 1.8% avg pos 17 | — | CHATGPT 4.8% | Claim |
| 47 | PyTorch pytorch.org | 1.8% avg pos 18 | — | GROK 14.3% | Claim |
| 48 | TensorFlow tensorflow.org | 1.8% avg pos 18 | — | GROK 14.3% | Claim |
| 49 | ArangoDB arangodb.com | 1.8% avg pos 21 | — | CHATGPT 4.8% | Claim |
| 50 | DuckDB duckdb.org | 1.8% avg pos 23 | — | CHATGPT 4.8% | Claim |
| 51 | RAGAS | 1.8% avg pos 27 | — | GROK 14.3% | Claim |
| 52 | ScaNN | 1.8% avg pos 32 | — | CHATGPT 4.8% | Claim |
| 53 | Apigee cloud.google.com | 1.8% | — | PERPLEXITY 4.8% | Claim |
| 54 | Cassandra | 1.8% | — | CLAUDE 14.3% | Claim |
| 55 | Cohere API cohere.com | 1.8% | — | CLAUDE 14.3% | Claim |
| 56 | Couchbase couchbase.com | 1.8% | — | PERPLEXITY 4.8% | Claim |
| 57 | HNSW | 1.8% | — | PERPLEXITY 4.8% | Claim |
| 58 | MongoDB | 1.8% | — | CLAUDE 14.3% | Claim |
| 59 | MyScaleDB | 1.8% | — | PERPLEXITY 4.8% | Claim |
| 60 | Oracle oracle.com | 1.8% | — | GROK 14.3% | Claim |
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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