openai/gym
Some data may be outdated — see provenance labels.
A toolkit for developing and comparing reinforcement learning algorithms. observed · 2026-09-24
Health v2 · maintenance only
10/100
- Activity 66
- Release rhythm 8
- Longevity 100
Flags: archived no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3828
- days_rel: n/a
- days_push: 208
- n_releases_24m: 0
Adoption not part of the score
37236 stars · 8674 forks observed · 2026-09-24
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Gym is a Python toolkit for developing and comparing reinforcement learning algorithms via a standard API between learning algorithms and environments, with a standard set of environments like CartPole and Atari. It is now deprecated: maintenance moved to Gymnasium, a drop-in replacement, and Gym receives no further updates.
Use cases
- train reinforcement learning agents on standard environments
- benchmark RL algorithms against a common API
- simulate control tasks like CartPole for RL research
- build custom RL environments with a standard interface
- learn reinforcement learning with classic toy environments
When to choose
- maintaining legacy code that already depends on the gym API
- reading older RL tutorials or papers that use gym
When to avoid
- starting a new reinforcement learning project (use Gymnasium instead)
- needing bug fixes or new environment features
- requiring official Windows support
Facets
library · maturity maintenance
machine-learning reinforcement-learning simulation reinforcement-learning machine-learning artificial-intelligence simulation python reinforcement-learning environment-api deprecated gymnasium-successor benchmarking-environments linux macos
1 source
- readme: https://github.com/openai/gym · fetched 2026-09-24 · 1a1c28b9e698
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| openai/gym | main | 10 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem