Anotaciones

Dumping my brain onto the internet. A collection of technical notes and solutions written for my future self, shared here in case they save someone else a headache.

HarnessTax: The Harness Matters Less Than You Think

Posted on Thu, 17 Sep 2026 in ia • Tagged with pi, opencode, coding-agent, ai, harness, claude-code, codex, benchmarks, ai-agents

The HarnessTax study from UC Berkeley and Arena evaluates 21 model-harness pairings and reaches three surprising conclusions. They back up with data why I use pi and OpenCode daily.