Prime Agent launches open-source self-improving RLM coding harness
Original titlePrime Agent: A self-improving RLM agent
AISummary
Prime Agent is a new open-source coding harness built on a persistent IPython kernel, a Recursive Language Model design, and Continual Harness state that the agent can create, read, update, and delete. Prime Intellect reports ARC-AGI-3 results of 95.5% RHAE Best@1 with Opus 5 and competitive long-context scores with the open-weights GLM-5.2 model.
AIWhy it matters
The post explains how the RLM and Continual Harness designs let an agent write code against its own context, sub-agents, and harness state, with benchmark evidence.
Source: Prime Intellect Blog · primeintellect.aiPublished · added here