OpenAI Gym is an open-source Python toolkit for developing and comparing reinforcement learning algorithms through standardized environments. It was widely used by...
Pros
- Established API used by a large body of reinforcement learning research
- Includes classic control, box2D, toy-text, and Atari-style environments
- Simple environment interface for prototyping agents
Cons
- No longer actively maintained compared with Gymnasium
- Older API differs from current reinforcement learning tooling
- Limited support for modern environments and dependency versions
