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Installation

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Python 3.13.14 is required. Refer to Prerequisites for full system requirements.

Install from PyPI for the quickest setup. Clone from git if you need the latest features and environments, or use a NeMo RL container if you intend to train with NeMo Gym and NeMo RL.

python3.13 -m pip install nemo-gym

Or with uv:

uv venv --python 3.13.14 && source .venv/bin/activate
uv pip install nemo-gym

The package includes built-in environments and CLI commands. Config and data paths resolve against the package install location automatically. To pin a release: python3.13 -m pip install nemo-gym==0.7.0.

Ray isn’t included by default. To run environments that use Ray, such as local_vllm_model or the SWE agents, install the ray extra: python3.13 -m pip install "nemo-gym[ray]".

Verify Installation

gym --version

You should see output like:

NeMo Gym v0.7.0
Python 3.13.14
Installation: /path/to/Gym

Next Steps

Quickstart

Run your first evaluation.