compare
Chroma vs pgvector
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Chroma | pgvector |
|---|---|---|
| Language | Rust | C |
| Licence | Apache-2.0 | Other |
| Stars | 29k | 23k |
| Latest | 1.5.9 | v0.8.7 |
| Last push | 2026-10-05 | 2026-10-06 |
| Release cadence | about 9 days between releases | too few releases |
| Active contributors | 9 commit authors on the default branch in the last 90 days | 4 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Pinecone. Alternatives to Pinecone →
PartialChromaEmbedded or client-server vector store, aimed at LLM applications.
PartialpgvectorVector similarity search inside PostgreSQL, next to your relational data.
Chroma
- latest2025-04-01Latestpre-release
- 1.5.92026-05-05Version: 1.5.9
- cli-1.4.42026-05-05CLI release.
- foundation-cli-v0.1.0-alpha.32026-05-01fix release workflow: use rust/foundation/target for standalone workspace binary pathpre-release
- 1.5.82026-04-16Version: 1.5.8
pgvector
This repository publishes tags, not GitHub releases.
Chroma
✓ signed The latest release, 1.5.9, carries a signature GitHub verified.
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pgvector
unsigned The latest release, v0.8.7, carries no signature GitHub could verify.
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