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Prime Agent

A coding agent that can refine its own harness

AgentOpen Source

An open-source, self-improving coding harness featuring a Recursive Language Model and a Continual Harness that rewrites its own planning/verification scaffolding as it runs. Claims 95.5% on ARC-AGI-3 benchmarks.

What is Prime Agent?

Prime Agent is an open-source, self-improving coding harness built around a Recursive Language Model and a Continual Harness that rewrites its own planning and verification scaffolding as it runs.

Key features

  • Recursive Language Model architecture
  • Continual Harness that self-edits its planning/verification scaffolding
  • Claims 95.5% on ARC-AGI-3 benchmarks
  • Fully open source

Who it's for

  • Researchers and builders exploring self-improving agent harnesses
  • Teams benchmarking coding agents against ARC-AGI-style reasoning tasks

When not to use it

The published benchmark number reflects ARC-AGI-3, not real-world codebases — treat it as a signal, not a guarantee on your own repo.

FAQ

What makes Prime Agent's harness 'self-improving'?

Its Continual Harness rewrites the agent's own planning and verification scaffolding as it runs, rather than using a fixed harness.

Open SourceAI AgentsArtificial IntelligenceAI Coding Agents
Submitted by Prime IntellectXLaunched August 22, 2026

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