MoMHa for multi-objective LLM harness optimization
Optimizes LLM harnesses for accuracy, safety, and token cost using a joint-reward proposer.
MoMHa is a system that frames harness design as a search problem over accuracy, behavioral safety, and token cost objectives.
Balancing competing objectives in LLM harness design for more efficient and responsible AI deployment.
Not specified
http://arxiv.org/abs/2609.30967v1
MoMHa is a system for optimizing LLM harnesses. It treats harness design as a search problem across accuracy, safety, and token cost, using an agentic proposer to find the best balance.
It addresses the multi-objective nature of harness design, where a single focus on accuracy can lead to unsafe or inefficient systems. By jointly optimizing for multiple criteria, it aims for better overall harness quality.
When only a single objective like raw accuracy is critical and other factors are irrelevant.
- MoMHa: Multi-Objective Optimization of LLM Harnesses over Accuracy, Safety, and Tokens ↗arXiv · arXiv cs.AI · Sep 25, 2026 · paraphrased
First seen on Subvolts Sep 25, 2026. Updated Sep 28, 2026. Spotted a problem? Tell us.
- MoMHa: Multi-Objective Optimization of LLM Harnesses over Accuracy, Safety, and TokensAnthropic · arXiv cs.AI · Sep 25, 2026
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
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Questions people ask
- Which AI tools does this work with?
- Any current model. It was seen with Claude in the sources.
- Where did this come from?
- arXiv (arXiv cs.AI). Subvolts collected, normalized and credited it; the link above opens the original.

