compare
pgvector vs Weaviate
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | pgvector | Weaviate |
|---|---|---|
| Language | C | Go |
| Licence | Other | Other |
| Stars | 23k | 17k |
| Latest | v0.8.7 | v1.39.9 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | too few releases | about 1 day between releases |
| Active contributors | 4 commit authors on the default branch in the last 90 days | 15+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Pinecone. Alternatives to Pinecone →
PartialpgvectorVector similarity search inside PostgreSQL, next to your relational data.
Full replacementWeaviateVector and hybrid search with built-in vectoriser modules.
pgvector
This repository publishes tags, not GitHub releases.
Weaviate
- v1.38.192026-10-06v1.38.19 - Export data to Parquet format improvements
- v1.39.92026-10-05v1.39.9 - LSM store performance improvements
- v1.39.82026-10-01v1.39.8 - MMR normalize query vector Fix, Multi-tenant collections re-vectorize check on PATCH
- v1.38.182026-10-01v1.38.18 - MMR normalize query vector Fix, Multi-tenant collections re-vectorize check on PATCH Fix
- v1.40.0-rc.22026-09-30v1.40.0-rc.2 - Alter Schema Drop Vector Index, HFresh MUVERA, RQ-4 quantizationpre-release
pgvector
unsigned The latest release, v0.8.7, carries no signature GitHub could verify.
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Weaviate
unsigned The latest release, v1.39.9, carries no signature GitHub could verify.
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