🤔 "Harness choice has little effect on task success rate, but can significantly affect the cost"
"A simple harness can be competitive"
"Models may perform better with other harnesses than with their own. So it turns out that your Claude models may not need Claude Code…"
harnesstax.github.io
harnesstax.github.io
HarnessTax: How Much Does the Harness Matter for Coding Agents?
What does a coding-agent harness actually add, and at what cost? It turns out your Claude models may not need Claude Code… We evaluate 21 model–harness pairs spanning seven models and three harnesses—...