pgvector About this resource
This is an independent, community-maintained resource for the pgvector PostgreSQL extension. It exists to make pgvector easier to install, understand, and use — through plain-language explanations, a copy-paste cheatsheet, an evidence-based troubleshooting guide, a comparison of alternatives, and a free index planner.
What this site is — and isn't
What it is
- A practical guide and reference for the pgvector PostgreSQL extension.
- A source of copy-paste SQL, an install matrix, and troubleshooting drawn from upstream documentation.
- A free client-side index planner that generates HNSW and IVFFlat SQL and tuning values.
- A directory of the wider ecosystem and a neutral comparison of alternatives.
What it isn't
- Not the official documentation, website, or support channel for pgvector.
- Not a source of independent performance benchmarks or rankings.
- Not a place to report pgvector bugs — use the project's issue tracker.
- Not affiliated with any of the products mentioned in the comparisons.
How this site stays accurate
Accuracy matters more than volume. Every factual claim — commands, flags, defaults, version numbers, limits, and links — is taken from a primary source or verified against one. Nothing is invented.
- Research from primary sources. Content is based on the project's own README, changelog, releases, tags, and license — plus the official pages of third-party tools where they are mentioned.
- Verify links. External links are checked before publishing. If a URL cannot be verified, it is not published.
- Record the version and date. Version-sensitive pages state the pgvector version they describe and the date they were last verified.
- Prefer omission to guessing. Where a fact is uncertain, it is left out rather than estimated or inferred.
- Correct promptly. Reported errors are investigated against the primary source and fixed.
Version and sources
The content on this site currently describes the following version. When upstream releases a new version, these pages are reviewed and updated.
| pgvector version described | v0.8.6 |
|---|---|
| Release date | 2026-07-29 |
| Last verified | 2026-09-30 |
| PostgreSQL support | 13 and newer |
| License | PostgreSQL License |
| Primary sources | Repository · README · Changelog · Tags · License |
Report a correction
Found something inaccurate, outdated, or broken? Corrections are welcome. The most useful reports include the page URL, the exact text you believe is wrong, and a link to a primary source that shows the correct information.
How this site is built
This site is a hand-built static website: HTML, CSS, and vanilla JavaScript with no framework, no build step, and no backend. The only interactive feature — the index planner — runs entirely in your browser. There are no accounts and no advertising; Google Analytics 4 is used to measure aggregate usage. Read the full privacy statement.