glicko2
Python implementation of glicko2
Decision gist · record as of 2026-08-14
Yes, if you need a Glicko-2 implementation. The package is stable, dependency-free, and carries no security vulnerabilities. The aging maintenance status is not a blocker for a mature algorithm—Glicko-2 itself is a well-established mathematical standard—but verify the API meets your needs before production use.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Installs with no dependencies and supports Python 3.7 and later.
- The package is aging—last release was 2024-01-18—but remains stable with no known vulnerabilities.
License · maintenance · safety
permissive license (permissive) — Licensed under MIT (permissive), so you can use, modify, and distribute it freely with minimal restrictions.
last release 2024-01-18 (939 days) · last repo commit 2025-09-03 · 33 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 155,473 downloads/mo, #10,814 on PyPI
Alternatives
Verify before relying
pip install glicko2
from glicko2 import Glicko2
rating_system = Glicko2()
# Compute updated rating after a match outcome- Whether the package is actively maintained or in maintenance-only mode despite aging status
- API stability guarantees or backward-compatibility commitments across versions
- Performance characteristics for large-scale rating updates
What it is and what it does
Glicko2 is a Python implementation of the Glicko-2 rating system, a mathematical framework for estimating player skill in competitive environments. It extends simpler rating systems by incorporating rating deviation (uncertainty) and rating volatility, allowing more nuanced ranking updates that account for confidence in each player's true skill level.
The package is a pure-Python library with no runtime dependencies, making it lightweight and easy to integrate into game servers, tournament platforms, or any system that needs to track and update player ratings. It's typically used to compute new ratings after matches or competitions, given prior ratings, rating deviations, and match outcomes.
Use it for
- Rank players in online multiplayer games or esports tournaments using a mathematically principled algorithm
- Estimate player skill uncertainty to improve matchmaking in competitive systems
- Implement a rating system for board games, chess, or turn-based competitions
- Track skill progression over time in educational or training contexts where performance varies
- Build a leaderboard backend that accounts for win/loss records and rating confidence
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need a Glicko-2 implementation.
The package is stable, dependency-free, and carries no security vulnerabilities. The aging maintenance status is not a blocker for a mature algorithm—Glicko-2 itself is a well-established mathematical standard—but verify the API meets your needs before production use.
Install
glicko2 on PyPI
Before you install
Installs with no dependencies and supports Python 3.7 and later. The package is aging—last release was 2024-01-18—but remains stable with no known vulnerabilities.
License in practice
Licensed under MIT (permissive), so you can use, modify, and distribute it freely with minimal restrictions.
Quickstart
pip install glicko2
from glicko2 import Glicko2
rating_system = Glicko2()
# Compute updated rating after a match outcomeVerify before relying
- Whether the package is actively maintained or in maintenance-only mode despite aging status
- API stability guarantees or backward-compatibility commitments across versions
- Performance characteristics for large-scale rating updates
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Aging 939 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 155,473 / month, #10,814 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 6 - MatureIntended Audience :: DevelopersIntended Audience :: Science/ResearchLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3Topic :: Scientific/Engineering :: Mathematics |
Evidence: glicko2-2.1.0-py2.py3-none-any.whl
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