Blog

After years of hard work, Gymnasium v1.0 has officially arrived! This release marks a major milestone for the Gymnasium project, refining the core API, addressing bugs, and enhancing features. Over 200 pull requests have been merged since version 0.29.1, culminating in Gymnasium v1.0, a stable release focused on improving the API (`Env`, `Space`, and `VectorEnv`). This post summarizes these changes.

We are excited to introduce the version 5 of the MuJoCo Environments, bringing a wide variety of improvements, including the ability to load custom robot models.

In this post, we explain the motivation for the terminated / truncated step API, why alternative implementations were not selected, and the relation to RL theory.

Minari provides the capability to create your own environment-based datasets, to download open-source datasets and to upload your own datasets for others to use.

We are excited to announce Shimmy 1.0, an API compatibility tool for converting a wide range of single and multi-agent environments to the Gymnasium and PettingZoo APIs

Today we're announcing the Farama Foundation – a new nonprofit organization designed in part to house major existing open source reinforcement learning (“RL”) libraries in a neutral nonprofit body.