Prime Agent: Open-Source Framework Boosts ARC-AGI Score from 30% to 95.5%
dair_ai · x · 2026-08-25
Prime Intellect released Prime Agent, an open-source framework for long-horizon agent work.
Key Features:
- Persistent IPython REPL: Allows the model to programmatically process its own context.
- Continual Harness: Carries history, memory, skills, and subagent specs across trajectories, enabling compounding improvements.
Performance:
- On ARC-AGI-3 RHAE, Best@1 score jumps from 30% to 95.5%.
- Matches or beats native harnesses on long-context coding, GPU kernel generation, and autonomous nanoGPT speedruns.
Related event: Prime Intellect Open-Sources Prime Agent, Hitting 95.5% on ARC-AGI 3(6 posts)→
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