Story
HarnessTax: How Much Does the Harness Matter for Coding Agents?
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Overview
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—Claude Code, Codex CLI, and Pi—on SWE-bench Lite and Terminal-Bench 2.0.
Summary from harnesstax.github.io.
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harnesstax.github.io
HarnessTax: How Much Does the Harness Matter for Coding Agents?
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