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Prime Agent
Last discussed Sep 7, 2026
A self-improving recursive language model (RLM) harness developed at Prime Intellect that supports persistent sub-agents, live CRUD on harness state, IPython ripples, and long-horizon autonomous research.
Recently discussed in
Why The Harness Matters More Than The Model | YC Paper Club
Y Combinator · Sep 7, 2026
What creators say
Y Combinator
mentioned
Used for: Self-improving agent harness for coding, auto-research, long-horizon tasks
Praised: Achieves 95.5% on ARC-AGI with Claude Opus, cost-efficient programmatic conte...
vs: Compared to Claude Code, Air Agent (expensive), other harnesses on ARC-AGI le...
"Prime Agent and Nvidia, which both recently just came out — with some harness, this thing that doesn't deserve any research, just some wrapper and some scaffolding, we can get to 95 and AVO from Nvidia got to 100%."
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