PyRank
noamgat

lm-format-enforcer

Enforce the output format (JSON Schema, Regex etc) of a language model
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

lm-format-enforcer has 3.7M monthly downloads and 2K GitHub stars. Version 0.11.3 supports Python <4.0,>=3.8, first published in 2023.

It is stably maintained under a permissive license, last released in Aug 2025.

It is built on top of interegular, packaging and pydantic. It is used by 37 tracked packages, including vllm, vllm-cpu and vllm-tpu.

Downloads
Day
107.8K
Week
817.0K
Month
3.7M
Stars
2.0K
Forks
91
Issues
40
Version
0.11.3

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
65
Popularity
65
Adoption
70
Community
35
Provenance
0
How the maintenance status was determined
Last commit
94 days ago
Monthly downloads
3,748,222
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
3,748,222
Stars
2,025
Stars per 1k downloads
0.54
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
116,713
Month daily avg
124,941
Momentum
-6.6%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
<4.0,>=3.8
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
317 days ago
Total releases
78
Releases/year
28.1
• 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
16
Monthly downloads
3,748,222
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
42
 
Issue Burden
19.8
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
17.6%
contrib / forks
Stale Release
222d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 61.7K
macOS 3.5K
Windows 985

Python Versions

3.12
59.3% 39.0K
3.11
21.9% 14.4K
3.10
9.2% 6.1K
3.13
7.6% 5.0K
3.14
1.9% 1.3K

Top Countries

1. US US
44.9K
2. KR KR
8.2K
3. SG SG
1.9K
4. CN CN
1.5K
5. NL NL
1.3K
6. DE DE
1.0K
7. GB GB
955
8. IN IN
804
9. JP JP
675
10. CA CA
628

Package Information

License
MIT
First Release
September 27, 2023
Last Release
10 months ago
Last Commit
3 months ago
Latest Version
0.11.3
Total Releases
78
Contributors
16
Open PRs
6
Archived
No
Author
Noam Gat
Python Versions
3 3.8 3.9 3.10 3.11 3.12 3.13
Wheels
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links