Today, we are releasing verifiers v1 — an overhaul of our environment stack for the modern era of agentic RL and evals. We decompose environments into a taskset, a harness, and a runtime. Run complex agentic tasks like coding and computer use at scale, in any harness.

The decomposition allows you to: - Create tasksets, either verifiers-native or by re-using other frameworks such as Harbor - Evaluate and train in any harness (e.g. Codex, mini-SWE-agent) or bring your own - Run them in different runtimes, e.g. subprocesses, Docker or sandboxes

For example, run Nemotron 3 Ultra on Terminal-Bench 2 under Codex by authoring a simple config and launch it with our CLI.