PyRank
CMA-ES

cma

Python implementation of CMA-ES
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

cma has 1.8M monthly downloads and 1K GitHub stars. Version 4.4.4, first published in 2014.

It is stably maintained under a permissive license, last released in Feb 2026.

It is built on top of numpy. It is used by 55 tracked packages, including pymoo, nevergrad and qibo.

Shared Repository
This package shares its GitHub repository (CMA-ES/pycma) with 1 other package. Stars, forks, and other GitHub metrics reflect the entire repository.
Downloads
Day
58.3K
Week
343.4K
Month
1.8M
Stars
1.3K
Forks
199
Issues
92
Version
4.4.4

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
65
Popularity
66
Adoption
60
Community
30
Provenance
0
How the maintenance status was determined
Last commit
114 days ago
Monthly downloads
1,756,218
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
1,756,218
Stars
1,334
Stars per 1k downloads
0.76
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
49,061
Month daily avg
58,541
Momentum
-16.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
Not specified
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
Package does not declare a minimum Python version.
License categories
License
BSD-3-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
131 days ago
Total releases
30
Releases/year
2.5
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
12
Monthly downloads
1,756,218
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
34
 
Issue Burden
69.0
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
6.0%
contrib / forks
Stale Release
No
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 38.5K
macOS 1.9K
Windows 1.5K

Python Versions

3.14
45.7% 18.2K
3.12
22.2% 8.8K
3.11
15.3% 6.1K
3.13
9.6% 3.8K
3.10
7.2% 2.9K

Top Countries

1. US US
37.6K
2. SG SG
720
3. NL NL
651
4. CN CN
533
5. IE IE
313
6. GB GB
238
7. JP JP
217
8. HK HK
216
9. FR FR
202
10. DE DE
168

Package Information

License
BSD-3-Clause
First Release
May 12, 2014
Last Release
4 months ago
Last Commit
3 months ago
Latest Version
4.4.4
Total Releases
30
Contributors
12
Open PRs
0
Archived
No
Author
Nikolaus Hansen, Youhei Akimoto, Petr Baudis
Python Versions
2.7 3
Wheels
py2 py3
Keywords
optimization CMA-ES cmaes
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links