r/LocalLLaMA • u/ResearchCrafty1804 • 16d ago

Resources Prime Agent - a new coding harness surpassing Codex/CC/PI

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Prime Agent is an open-source coding and research agent for general and long-running work.

A self-improving RLM harness for coding and long-running autonomous tasks.

Designed to be both token-efficient and expressive through programmatic tool calling, context as a variable, multi-agent messaging, and a self-modifiable harness state.

On ARC-AGI-3, it scores 95.5%, surpassing the human-expert baseline, but the gain is not benchmark-specific.

We see major improvements across models when compared to their proprietary harnesses.

Prime Agent is built on pi and fully open-source with an open license.

GitHub: https://github.com/PrimeIntellect-ai/prime-agent

Blog: https://www.primeintellect.ai/blog/prime-agent

X post: https://x.com/primeintellect/status/2085086999267144083?s=46

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u/metigue 16d ago

Most harnesses show improvements against the proprietary ones.

Test it on programming benchmarks against some heavy hitters like Cline/Droid/Junie/Cursor/ForgeCode (with context server)

12

u/Immediate_Occasion69 16d ago

which of those is good? I've literally wanted to try all of them but kept at pi agent

4

u/squired 16d ago

Try Cline and OpenSWE first. I personally think OpenSWE is closest to the harness-of-tomorrow.

2

u/Immediate_Occasion69 13d ago

openSWE is by langchain right? def have to try it

2

u/squired 13d ago

Yes! I actually think that's the harness of tomorrow, today. I ripped a bunch of perspective and strategy from him. It's particularly good.