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YES: Harness Self-optimization w/ 9B LLM (Local AI)

2026-06-02 Science & Technology
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Description

Why We Are Building Self-Improving AI Agents Wrong: The transition from unified single-model loops to decoupled, asymmetric "Evolver-Solver" multi-agent systems. This appeals to developers looking for immediate, real-world optimization and API cost reduction. It highlights the flat scaling law of "Harness-Updating": the fact that a small open-weight model can analyze logs and write prompt templates just as effectively as a massive frontier model (Opus 4.6). all rights w/ authors: Harness Updating Is Not Harness Benefit: Disentangling Evolution Capabilities in Self-Evolving LLM Agents Minhua Lin1*, Juncheng Wu2*, Zijun Wang2, Zhan Shi3, Yisi Sang3, Bing He3 Zewen Liu4, Tianxin Wei5, Zongyu Wu1, Zhiwei Zhang1, Dakuo Wang6, Xiang Zhang1 Benoit Dumoulin3, Cihang Xie2, Yuyin Zhou2, Suhang Wang1, Hanqing Lu3 from 1 The Pennsylvania State University 2 UC Santa Cruz 3 Amazon 4 Emory University 5 UIUC 6 Northeastern University #airesearch #aiexplained #aismart #harness #aiharness

Top Comments (10)

@zhonezhone6682 2026-06-03

A well-established empirical study. Good job!

0
@Tkdfbrudwp 2026-06-02

My experience is contrary to the research. Gpt-oss-120b works much worse than recent 30B models, such as gemma 4 31B.

4 1 replies
@malikrumi1206 2026-06-04

What was the precision / quantization of the Qwen 32B?

0
@japorto100 2026-06-02

Interesting. Well Metaharness study the used a 9B model. Not sure what it was in SIA

0
@TheAdeybob 2026-06-02

'good update from error' >> perfect way to enhance/improve a system. The "You're an expert.." part of prompt is likely to make gpt 5.5 and opus 4.7/4.8 a little less efficient during compute.

0 1 replies
@countofserenno7605 2026-06-04

How does this stack up with the 4 layer harness? Or how can we actually get deliverables out of all these college thesis papers?

0 1 replies
@RebelSyntax 2026-06-02

Ive had this concept for a long time now. Its hard to get traction on it outside of personal use. But i suspect now that cost is becoming a thing, enterprises will have to stop feigning ignorance on the topic.

0
@danteemanuel6068 2026-06-02

You be just so happy to hear what your research engines done brought up. Yo, do you do the research yourself? I mean either way either you set it up or are you paying for it? Either way you got a good smart brain to be posted on YouTube I mean you stay right where you need to be. I can’t hold you. I can’t hold you.

1 2 replies
@F336 2026-06-03

qwen3.6:27b would do better i think...

0
@dezigns333 2026-06-02

Instead of baking the harness in just make them easier to use by AI. OpenAI set a bad example by forcing it with training. just design it smarter.

0

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