Who each engine recommends
Position of every brand named in the latest run.
| Brand | ChatGPT | Perplexity | AI Mode | Mention rate |
|---|---|---|---|---|
| Pinecone | #4 | #2 | #1 | |
| Qdrant | #2 | #1 | #3 | |
| Zilliz CloudTop pick | #1 | — | #6 | |
| PostgreSQL | — | #3 | #2 | |
| Weaviate | #5 | — | #4 | |
| MongoDB Atlas | #3 | — | — | |
| Elasticsearch | — | — | #5 |
Responses
What each engine answered, and how the shortlist moved.
Based on the latest available user reviews (November 2026), Zilliz (Milvus) is one of the highest-rated vector database platforms on G2, with a rating of 4.7/5. However, the best choice depends on whether you prioritize customer satisfaction, ease of use, performance, or scalability. Top vector databases by user reviews The following ratings are from G2's October 2026 review data. www.g2.comwww.g2.com Vector database G2 rating Reviews ------------------------ Zilliz Cloud 4.7/5 52 Milvus 4.7/5…
- Zilliz Cloud — Zilliz Cloud / Milvus.
- Qdrant — Best open-source option: Qdrant.
- MongoDB Atlas — Most review evidence: MongoDB Atlas, with 855 reviews.
- Pinecone — Best managed service: Pinecone.
- Weaviate — Best hybrid search: Weaviate.
- Qdrant — Qdrant has the strongest overall user-review signal, especially for self-hosted deployments: PeerSpot rates it 8.9/10, the highest among its leading vector databases.
- Pinecone — Best managed service: Pinecone — praised for ease of use, scalability, and fast integration, though its PeerSpot rating is lower at 8.6.
- PostgreSQL — Best if already using PostgreSQL: pgvector — keeps vector search inside PostgreSQL and avoids adding another database.
When looking at user reviews, community sentiment, and developer ratings across platforms like G2 and open-source communities, there isn't a single "best" winner . Instead, reviews strongly favor different options depending on whether you want a zero-ops managed cloud service, an extension to an existing database, or an enterprise-scale engine.[](https://www.instaclustr.com/education/vector-database/best-open-source-vector-database-solutions-top-5-in-2026/)[](https://www.g2.com/articles/best-…
- Pinecone — Pinecone – Best for Zero-Ops Serverless & RAG.
- PostgreSQL — pgvector (PostgreSQL extension) – Best for Existing Postgres Users.
- Qdrant — Qdrant – Best for Low-Latency & Filtering.
- Weaviate — Weaviate – Best for Hybrid Search.
- Elasticsearch — Elasticsearch / Zilliz (Milvus) – Best for Enterprise & Massive Scale.
- Zilliz Cloud — Zilliz/Milvus gets top marks for managing billion-scale data sets.[](https://www.instaclustr.com/education/vector-database/best-open-source-vector-database-solutions-top-5-in-2026/)[](https://www.g2.com/articles/best-…
Citations
Sources the engines cited for this prompt.
| Source | Type | Citations | Cited by |
|---|---|---|---|
| g2.com | Review site | 9 | ChatGPT, Perplexity, Google AI Mode |
| toolradar.com | Web | 2 | Perplexity |
| awesomeagents.ai | Web | 1 | Perplexity |
| citehawk.com | Web | 1 | Perplexity |
| geekflare.com | Web | 1 | Perplexity |
| github.com | Web | 1 | Perplexity |
| instaclustr.com | Web | 1 | Google AI Mode |
| peerspot.com | Web | 1 | Perplexity |
| pinecone.io | Brand site · Pinecone | 1 | ChatGPT |
| qdrant.tech | Brand site · Qdrant | 1 | ChatGPT |
| subrupt.com | Web | 1 | Perplexity |
| weaviate.io | Brand site · Weaviate | 1 | ChatGPT |
| zilliz.com | Brand site · Zilliz Cloud | 1 | ChatGPT |