PyPI Stats
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flax

Flax is a neural network library for JAX that is designed for flexibility.
PyPI GitHub
Downloads
Day
205.5K
Week
1.3M
Month
5.4M
Stars
7.2K
Forks
798
Issues
224
Version
0.12.7

Package Insights

What's this?
Score breakdown - each component scores 0–100, weighted by percentage
Maintenance
100
Popularity
83
Adoption
80
Community
80
How the maintenance status was determined
Last commit
6 days ago
Monthly downloads
5,371,727
• 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
5,371,727
Stars
7,186
Stars per 1k downloads
1.34
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
179,962
Month daily avg
179,058
Momentum
+0.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.11
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
Apache Software License
• 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
14 days ago
Total releases
64
Releases/year
10.4
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
295
Monthly downloads
5,371,727
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
86
 
Issue Burden
31.2
per 1k stars
Discussions
107.3
per 1k stars
Fork Ratio
37.0%
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 136.3K
macOS 12.3K
Windows 8.1K

Python Versions

3.12
66.6% 102.6K
3.11
20.2% 31.1K
3.10
9.1% 14.0K
3.13
3.0% 4.7K
3.9
1.1% 1.8K

Top Countries

1. US US
144.5K
2. NL NL
4.6K
3. GB GB
1.2K
4. SG SG
1.1K
5. CN CN
997
6. JP JP
492
7. KR KR
460
8. IN IN
400
9. CA CA
372
10. DE DE
336

Dependencies

10
48 optional dependencies

Used By

339
View all 339 dependents

Package Information

License
Apache Software License
First Release
March 17, 2020
Last Release
2 weeks ago
Last Commit
6 days ago
Latest Version
0.12.7
Total Releases
64
Contributors
295
Open PRs
250
Archived
No
Python Versions
3.11 3.12
Wheels
py3
Topics
jax
Tracking Since
January 6, 2026
Data Updated
May 3, 2026
Data Freshness
Fresh

Links