---
title: "zvec vs pgvector"
type: "comparison"
canonical_url: "https://www.graphcanon.com/compare/alibaba-zvec-vs-pgvector-pgvector"
tools: ["alibaba-zvec", "pgvector-pgvector"]
---

# zvec vs pgvector

Neutral, constraint-first comparison with live GitHub stats.

| | [zvec](/tools/alibaba-zvec.md) | [pgvector](/tools/pgvector-pgvector.md) |
| --- | --- | --- |
| Tagline | A lightweight, lightning-fast, in-process vector database | Open-source vector similarity search for Postgres |
| Stars | 13,974 | 22,107 |
| Forks | 847 | 1,232 |
| Open issues | 56 | 14 |
| Language | C++ | C |
| License | Apache-2.0 | Other |
| Categories | Vector Databases | Data & Retrieval |

---

**Machine-readable endpoints**

- JSON: [`/api/graphcanon/graph?tool=alibaba-zvec`](/api/graphcanon/graph?tool=alibaba-zvec)
- LLM index: [/llms.txt](/llms.txt)
- Full corpus: [/llms-full.txt](/llms-full.txt)

_GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_