Is Faiss Still Maintained? Live GitHub Status
On GitHub, the project describes itself as: “A library for efficient similarity search and clustering of dense vectors.”
Short answer: Yes, it is actively maintained. Health score 73/100. Checked 18 Oct 2026.
What the numbers say
Faiss’s main branch received 164 commits in the last 91 days, against 103 in the same 91 days a year earlier (+59%). Activity is at least half of last year’s pace and no maintenance notice was found, so the index labels it active. It has 41,163 stars on GitHub.
Faiss security practices and adoption
Security practices
OpenSSF Scorecard, an automated review of how the repository is run
- Code review10/10
- Branch protection3/10
- Dangerous workflow10/10
- Pinned dependencies3/10
- Security policy9/10
All 14 checks
- Maintained10/10
- Binary artifacts10/10
- Token permissions0/10
- OpenSSF Best Practices badge0/10
- Static analysis (SAST)0/10
- License10/10
- Fuzzing0/10
- Signed releasesn/a
- Packaging10/10
Full report, run 12 Oct 2026
Scorecard checks security practices such as code review, branch protection and pinned dependencies; it does not find bugs, and a low score does not mean the software is unsafe. Dependents and download counts show reach, not quality. Sources: OpenSSF Scorecard, GitHub, read 18 Oct 2026, 20:35 UTC.
Health score breakdown
| Part | Points | Based on |
|---|---|---|
| Activity | 27.9 / 35 | 164 commits in the last 91 days (full marks at 600) |
| Trend | 20.0 / 20 | 159% of last year’s pace (full marks at 100%) |
| Recency | 15.0 / 15 | last commit 0 days ago |
| Releases | 10.0 / 10 | latest GitHub release 32 days ago |
| Community | 0.0 / 20 | 0 pull requests merged in the last 91 days (full marks at 300) |
Open issues and pull requests: 355. The score summarises maintenance signals only, not quality or security. How the score works
Faiss: common questions
Is Faiss still maintained?
Yes. As of 18 October 2026, Faiss received 164 commits in the last 91 days and its latest commit is from 18 October 2026, and no maintenance notice was found. Its health score is 73 out of 100.
What is the latest Faiss release?
The latest GitHub release of Faiss is v1.15.1, published on 16 September 2026.
How many people contribute to Faiss?
GitHub lists 291 contributors for Faiss. 0 pull requests were merged in the last 91 days.
What licence does Faiss use?
GitHub identifies the Faiss licence as MIT. Read the licence file before commercial use.
Is Faiss secure?
We cannot say whether the code is free of vulnerabilities. What can be measured is how the project is run: the OpenSSF Scorecard gives Faiss 6.2 out of 10 for security practices (run 12 October 2026), covering checks such as code review, branch protection and pinned dependencies. Read the full report and the project’s security policy before relying on it.
How is the health score calculated?
It adds five parts from public GitHub data: commit activity over 91 days (35 points), the trend against the same period last year (20), how recent the last commit is (15), how recent the last release is (10) and merged pull requests (20). Archived projects score 0; a maintenance notice caps the score at 25. It measures maintenance signals only, not code quality or security.
Visitor rating
Have you used Faiss? Rate it:
Ratings come from visitors, not from EvalAITools, and are not part of the health status above. One rating per visitor per tool every 30 days.
Daily snapshots
| Date (UTC) | Stars | Commits, last 91 days | Status |
|---|---|---|---|
| 18 Oct 2026 | 41,165 | 163 | Active |
| 17 Oct 2026 | 41,163 | 164 | Active |
One snapshot is stored per day, starting 16 October 2026. No status change has been recorded for Faiss since then.
Other vector databases
| Tool | Status | Stars | Commits (91d) | vs last year |
|---|---|---|---|---|
| Meilisearch | Active | 59.6k | 353 | −37% |
| Milvus | Active | 46.4k | 651 | +18% |
| Faiss | Active | 41.2k | 164 | +59% |
| Qdrant | Active | 35.1k | 709 | +104% |
| Chroma | Slowing down | 29.5k | 115 | −66% |
| Typesense | Slowing down | 27.0k | 31 | −62% |
| pgvector | Active | 23.4k | 118 | +269% |
| Weaviate | Active | 16.9k | 3,561 | +143% |
| LanceDB | Active | 11.7k | 482 | +219% |
| sqlite-vec | No recent commits | 8.2k | 0 | — |
| Vespa | Active | 7.1k | 1,835 | +28% |
| Marqo | No recent commits | 5.0k | 0 | −100% |
| pgvecto.rs | No recent commits | 2.2k | 0 | — |
Status badge
Show Faiss’s live maintenance status in a README. The badge updates with this page and links back to it.
[](https://evalaitools.com/tools/faiss/)Read next
How this is measured: commits on the repository’s default branch counted through the GitHub API, the last 91 days against the same 91 days a year earlier; archived flag and licence from the repository; README checked daily for maintenance notices. Commit counts measure activity, not quality, and we have not tested this tool ourselves for this page.