best of the best agentic harnesses do this…

Reddit r/AI_Agents Tools

Summary

The author shares insights on building effective agent harnesses: the best ones minimize LLM reliance for trivial tasks and reserve LLMs for complex reasoning, distinguishing genuine harnesses from simple wrappers.

i have built and used a lot of agent harnesses. i found out one thing: \- the harnesses which depend the “LEAST” on the LLMs often give the best performance also the harnesses that almost always depend on the LLMs are wrappers and not harnesses. your harness needs to use LLM for decision making, and very complex reasoning stuff, not all the trivial stuff. thats what separates wrappers from good harnesses. what do you think?
Original Article

Similar Articles

Stop Comparing LLM Agents Without Disclosing the Harness

arXiv cs.AI

This position paper argues that in long-horizon LLM agent tasks, the execution harness often determines performance more than the model itself, and current benchmarks misattribute harness-level gains to model improvements. It proposes a harness-aware evaluation framework with disclosure standards and variance decomposition protocols.