No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
pyod has 4.4M monthly downloads and 10K GitHub stars. Version 3.6.1 supports Python 3.9+, first published in 2018.
It is actively maintained under a permissive license, last released in Jun 2026.
It is built on top of joblib, matplotlib and numba. It is used by 64 tracked packages, including pycaret, darts and ydata-sdk.
GitHub topics include outlier-detection, anomaly-detection and outlier-ensembles.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
85
Adoption
80
Community
70
Provenance
0
How the maintenance status was determined
Last commit
20 days ago
Monthly downloads
4,360,042
•
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
4,360,042
Stars
9,899
Stars per 1k downloads
2.27
Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
•
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
158,289
Month daily avg
145,335
Momentum
+8.9%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.9
Cutting Edge
Minimum supported version is 3.12 or newer
•
Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
BSD-2-Clause
•
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
20 days ago
Total releases
112
Releases/year
13.8
•
Rapid
Last release within 365 days and > 12 releases/year
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
57
Monthly downloads
4,360,042
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
•
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
80
Issue Burden
18.9
per 1k stars
Discussions
2.7
per 1k stars
Fork Ratio
3.9%
contrib / forks
Stale Release
No
PR Velocity
Active
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
68.0K
Windows
11.6K
macOS
283
Python Versions
3.12
28.8%
22.6K
3.10
26.3%
20.7K
3.13
26.0%
20.4K
3.11
14.6%
11.5K
3.9
4.3%
3.3K
Top Countries
1.
US
49.7K
US
2.
IN
12.8K
IN
3.
NL
5.0K
NL
4.
GR
3.0K
GR
5.
IE
2.6K
IE
6.
GB
2.3K
GB
7.
JP
1.1K
JP
8.
SG
795
SG
9.
BE
640
BE
10.
HK
289
HK
Dependencies
6
- joblib >=1.5
- matplotlib
- numba >=0.51
- numpy >=1.19
- scikit-learn >=0.22.0
- scipy >=1.5.1
28 optional dependencies
- combo[all]
- combo[combo]
- librosa[audio]
- librosa[all]
- mcp[mcp]
- mcp[all]
- openai[all]
- openai[openai]
- pillow[all]
- pillow[huggingface]
- pythresh[all]
- pythresh[pythresh]
- sentence-transformers[all]
- sentence-transformers[embedding]
- soundfile[audio]
- soundfile[all]
- suod[all]
- suod[suod]
- torch[all]
- torch[graph]
- torch[huggingface]
- torch[torch]
- torch-geometric[all]
- torch-geometric[graph]
- transformers[all]
- transformers[huggingface]
- xgboost[all]
- xgboost[xgboost]
Used By
64
- pycaret
- darts
- ydata-sdk
- suod
- pythresh
- datupapi
- dqtlib
- viewser
- litewave-ml-models-yield-data-analysis
- autobrewml
- pycatcher
- dtaianomaly
- informativefeatureselection
- daydream
- pysad
- autoprognosis
- disjoint-generation
- bunkatopics
- qprism
- panda-patrol
- growthcurves
- litewaveai-ml-models-yield-data-analysis
- py-tidy-adapter
- mmaing-aesop
- empyricalrmt
- gray-box-clf
- inputless-models
- graphomaly
- open-data-sci
- unquad
- spikes-to-us-in
- threatflix-ueba
- relaiss
- paddlets
- e2epyppg
- balif
- epmt
- dia-aiml
- data-suite
- pyclad
- autozeekwatch
- iotfunctions
- drfr
- scmorph
- eeg-emotion-recognition
- muzlin
- hidden-outlier-generation
- adaptive-profiler
- azure-anomaly-shim
- python-clustering
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Outlier Detection
Anomaly Detection
Outlier Ensembles
Machine Learning
Data Mining
Unsupervised Learning
Fraud Detection
Deep Learning
Data Science
Novelty Detection
Out Of Distribution Detection
Foundation Models
Image Anomaly Detection
Multimodal
Nlp Anomaly Detection
Agentic Ai
Graph Anomaly Detection
Time Series
Time Series Anomaly Detection
Package Information
License
BSD-2-Clause
First Release
May 20, 2018
Last Release
2 weeks ago
Last Commit
2 weeks ago
Latest Version
3.6.1
Total Releases
112
Contributors
57
Open PRs
40
Archived
No
Python Versions
3.9
3.10
3.11
3.12
3.13
Wheels
py3
Keywords
anomaly detection
outlier detection
machine learning
deep learning
unsupervised learning
time series anomaly detection
graph anomaly detection
nlp anomaly detection
image anomaly detection
multimodal
agentic ai
foundation models
fraud detection
novelty detection
out-of-distribution detection
outlier ensembles
pytorch
python
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh