No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
outlines has 2M monthly downloads and 14K GitHub stars. Version 1.3.1 supports Python <3.14,>=3.10, first published in 2023.
It is actively maintained under a permissive license, last released in Jun 2026.
It is built on top of cloudpickle, diskcache and genson. It is used by 62 tracked packages, including sglang, mlx-openai-server and optillm.
GitHub topics include generative-ai, llms and prompt-engineering.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
86
Adoption
70
Community
70
Provenance
0
How the maintenance status was determined
Last commit
3 days ago
Monthly downloads
1,961,458
•
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
1,961,458
Stars
14,378
Stars per 1k downloads
7.33
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
62,622
Month daily avg
65,382
Momentum
-4.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
<3.14,>=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
Apache-2.0
•
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
6 days ago
Total releases
82
Releases/year
24.9
•
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
175
Monthly downloads
1,961,458
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
6.1
per 1k stars
Discussions
10.6
per 1k stars
Fork Ratio
23.2%
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
41.8K
Windows
399
macOS
359
Python Versions
3.11
33.3%
14.2K
3.10
31.3%
13.3K
3.12
28.1%
11.9K
3.13
4.8%
2.0K
3.14
2.5%
1.1K
Top Countries
1.
US
35.9K
US
2.
KR
1.9K
KR
3.
SG
1.2K
SG
4.
DE
771
DE
5.
CN
549
CN
6.
JP
307
JP
7.
GB
272
GB
8.
CA
260
CA
9.
HK
175
HK
10.
IN
171
IN
Dependencies
10
- cloudpickle
- diskcache
- genson
- jinja2
- jsonpath-ng
- jsonschema
- outlines-core ==0.2.14
- pillow
- pydantic >=2.0
- typing-extensions
62 optional dependencies
- accelerate[transformers]
- accelerate[test]
- airportsdata[airports]
- airportsdata[test]
- anthropic[test]
- anthropic[anthropic]
- beartype[test]
- coverage[test]
- datasets[mlxlm]
- datasets[test]
- datasets[transformers]
- diff-cover[test]
- dottxt[dottxt]
- dottxt[test]
- flax[test]
- google-genai[test]
- google-genai[gemini]
- huggingface-hub[test]
- huggingface-hub[tgi]
- huggingface-hub[llamacpp]
- iso3166[countries]
- iso3166[test]
- jax[test]
- llama-cpp-python[test]
- llama-cpp-python[llamacpp]
- llguidance[llguidance]
- llguidance[test]
- lmstudio[lmstudio]
- lmstudio[test]
- mistralai[test]
- mistralai[mistral]
- mkdocs-gen-files[test]
- mlx[mlxlm]
- mlx-lm[mlxlm]
- mlx-lm[test]
- numba[llamacpp]
- numba[test]
- numpy[test]
- ollama[test]
- ollama[ollama]
- openai[vllm]
- openai[sglang]
- openai[openai]
- openai[test]
- pillow[test]
- pre-commit[test]
- pytest[test]
- pytest-asyncio[test]
- pytest-cov[test]
- pytest-mock[test]
- requests[test]
- responses[test]
- sentencepiece[test]
- sentencepiece[transformers]
- setuptools[transformers]
- tensorflow[test]
- tf-keras[test]
- torch[test]
- transformers[test]
- transformers[transformers]
- xgrammar[test]
- xgrammar[xgrammar]
Used By
62
- sglang
- mlx-openai-server
- optillm
- deepfabric
- aquiles-image
- text-albumentations
- logsentinelai
- econsimulacra
- sglang-kt
- neural-txt
- mlx-omni-server
- gimkit
- sieves
- doctra
- truthtorchlm
- fusellm
- lsglang
- agents-docs-sync
- educhateval
- kraken-llm
- mosaicx
- mlx-textgen
- su-master-mind-llm
- nm-vllm
- llm-vm
- ai-dynamo-vllm
- vllm-xft
- outlines-haystack
- vllm-npu
- autobiasdetector
- nextai-vllm
- hinteval
- mlxengine
- vllm-emissary
- structurecontext
- structuredcontext
- silkweb
- gec-metrics
- lll-simple-ai-service
- langextract-outlines
- json-repair-llm
- vllm-rocm
- vllm-test-tpu
- outlinesmlx
- codestory
- artisan-engine
- tilearn-infer
- open-autonlu
- mseep-deepfabric
- struct-ie
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
Apache-2.0
First Release
March 22, 2023
Last Release
1 week ago
Last Commit
4 days ago
Latest Version
1.3.1
Total Releases
82
Contributors
175
Open PRs
20
Archived
No
Author
Outlines Developers
Python Versions
3
Wheels
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh