Dev ToolsOpen weights
Prime Agent
Prime Intellect's Prime Agent: a self-improving RLM harness claiming 95.5% on ARC-AGI 3's public set
A self-improving recursive language model harness for coding and long-running autonomous tasks, built on Mario Zechner's Pi: programmatic tool calling, context as a runtime variable, multi-agent messaging, and scaffolding the agent patches while running. The headline 95.5% ARC-AGI 3 claim with Opus 5 comes with LDJ's asterisk: public set only, unvalidated on the private sets, and several harnesses claim similar. Nisten's line that keeps it honest: the model is not updating its own weights; that's still the holy grail.
95.5% ARC-AGI 3 public set with Opus 5 (unvalidated)3-4 other harnesses claiming 95%+ on the same set