PyPI Stats
DLR-RM

stable-baselines3

PyTorch version of Stable Baselines, reliable implementations of reinforcement learning algorithms.
PyPI GitHub

Shared Repository

This package shares its GitHub repository (DLR-RM/stable-baselines3) with 1 other package. Stars, forks, and other GitHub metrics reflect the entire repository.
Downloads
Day
92.2K
Week
332.7K
Month
1.2M
Stars
13.2K
Forks
2.1K
Issues
54
Version
2.9.0a2

Package Insights

What's this?
Score breakdown - each component scores 0–100, weighted by percentage
Maintenance
100
Popularity
87
Adoption
90
Community
80
How the maintenance status was determined
Last commit
4 days ago
Monthly downloads
1,215,341
• 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
1,215,341
Stars
13,197
Stars per 1k downloads
10.86
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
47,527
Month daily avg
40,511
Momentum
+17.3%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.10
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
MIT
• 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
17 days ago
Total releases
112
Releases/year
18.7
• 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
176
Monthly downloads
1,215,341
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
71
 
Issue Burden
4.1
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
8.3%
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 30.2K
Windows 4.8K
macOS 3.1K

Python Versions

3.12
51.3% 18.9K
3.11
24.1% 8.9K
3.10
10.1% 3.7K
3.13
8.3% 3.1K
3.14
6.1% 2.3K

Top Countries

1. US US
23.7K
2. FR FR
4.8K
3. SG SG
1.7K
4. VN VN
1.1K
5. DE DE
915
6. CN CN
599
7. NL NL
543
8. IN IN
467
9. JP JP
459
10. KR KR
371

Dependencies

4
23 optional dependencies

Used By

114
View all 114 dependents

Package Information

License
MIT
First Release
May 7, 2020
Last Release
2 weeks ago
Last Commit
4 days ago
Latest Version
2.9.0a2
Total Releases
112
Contributors
176
Open PRs
24
Archived
No
Author
Antonin Raffin
Python Versions
3 3.10 3.11 3.12 3.13
Wheels
py3
Keywords
reinforcement-learning-algorithms reinforcement-learning machine-learning gymnasium gym openai stable baselines toolbox python data-science
Topics
reinforcement-learning reinforcement-learning-algorithms machine-learning gym openai baselines toolbox stable-baselines python pytorch robotics sde gsde sb3
Tracking Since
January 6, 2026
Data Updated
May 3, 2026
Data Freshness
Fresh

Links