gym
A toolkit for developing and comparing reinforcement learning algorithms.
- Status
- UnmaintainedGitHub repository has been archived.
- Last checked
- Checked · Oct 10, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
Gym is a toolkit for developing and comparing reinforcement learning algorithms. It provides a standard API to interact with environments, making it easier to test different RL methods across various tasks.
Gym provides a standardized and extensible framework for developing, testing, and comparing reinforcement learning algorithms across various environments.
When it fits — and when it doesn’t
A good fit for
Researchers looking to benchmark their reinforcement learning algorithms against standard environments
Developers who need a consistent API for interacting with various reinforcement learning environments
Look elsewhere if
Projects requiring real-time interaction with physical systems (due to its local nature)
Teams needing cloud-based solutions for large-scale RL training
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited support for non-standard environments
Custom environment integration requires significant effort and documentation is sparse on this topic
- 02
Performance bottlenecks in large-scale deployments
Gym's architecture can lead to performance issues when scaling up the number of parallel environments
What it does well
Standardized API for reinforcement learning environments
Wide range of pre-built environments for testing algorithms
Easy to extend with custom environments
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up gym
Setup steps, common gotchas and what to check after 30 days.
Get the badge
A small badge for gym’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.
Markdown
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