No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
flash-attn-4 has 1.2M monthly downloads and 24K GitHub stars. Version 0.0.1 supports Python 3.10+, first published in 2026.
It is actively maintained, last released in Feb 2026.
It is used by 3 tracked packages, including sglang, cutez and lsglang.
Package Insights
Package Risks
- No releases in 147 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
91
Adoption
100
Community
80
Provenance
0
How the maintenance status was determined
Last commit
0 days ago
Monthly downloads
1,201,008
•
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
1,201,008
Stars
24,375
Stars per 1k downloads
20.30
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
54,946
Month daily avg
40,034
Momentum
+37.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python 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
Not specified
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
Package does not declare a license.
How the release cadence was determined
Last release
148 days ago
Total releases
18
Releases/year
44.4
•
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
208
Monthly downloads
1,201,008
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
41.6
per 1k stars
Discussions
1.0
per 1k stars
Fork Ratio
7.2%
contrib / forks
Stale Release
147d
PR Velocity
Active
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
83.9K
Windows
169
macOS
54
Python Versions
3.12
65.5%
55.1K
3.10
30.9%
26.0K
3.11
2.0%
1.7K
3.14
0.9%
750
3.13
0.7%
594
Top Countries
1.
US
81.1K
US
2.
SG
459
SG
3.
CN
298
CN
4.
DE
280
DE
5.
JP
255
JP
6.
CA
180
CA
7.
NO
180
NO
8.
KR
145
KR
9.
BE
144
BE
10.
FI
101
FI
Package Information
License
Unknown
First Release
February 9, 2026
Last Release
4 months ago
Last Commit
15 hr ago
Latest Version
0.0.1
Total Releases
18
Contributors
208
Open PRs
200
Archived
No
Author
Driss Guessous
Python Versions
3
Wheels
py3
Tracking Since
February 15, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh