verifiers is our library for creating environments to train and evaluate LLMs.

verifiers is tightly integrated with the Environments Hub, as well as our training framework prime-rl and our Hosted Training platform.

We recommend installing the Prime CLI to interact with the environments.

# install uv
curl -LsSf https://astral.sh/uv/install.sh | sh
# install the prime CLI
uv tool install prime

• The docs contain short, human-written guides and overviews about the architecture.
• The AGENTS.md and skills are for coding agents and go into more details.

Originally created by Will Brown (@willccbb).

@misc{brown_verifiers_2025,
  author       = {William Brown},
  title        = {{Verifiers}: Environments for LLM Reinforcement Learning},
  howpublished = {\url{https://github.com/PrimeIntellect-ai/verifiers}},
  year         = {2025}
}