Pi hits Pareto frontier on both benchmarks with just four tools: read, write, edit, bash
arena · x · 2026-09-19
- pidotdev shared a harness-design cost analysis on The Harness Tax by Melissa Pan et al.
- Key finding: the Pi coding agent reaches the Pareto frontier on both benchmarks using only four tools — read, write, edit, and bash — showing a minimal toolset plus good harness design can balance performance and spend.
- Methodology: costs compared across completed attempts, recorded turn counts, and initial context to quantify how harness design affects spending.
More from coding & agent
- User hooks Grok into Cursor and gets addicted: frontend building on autopilot — Kyrannio · 2026-09-19
- New Paper Empirically Studies Harness Design for Coding Agents — _akhaliq · 2026-09-19
- Yacine: Even Top Models Make Bad Decisions—I Still Read Every Line of AI Code — yacineMTB · 2026-09-19
- TypeSafe AI's decision model Jev lands on Merge Gateway with free output tokens — shensi · 2026-09-19
- Jev Directory indexes 50 runnable evals and 722 community builds, agent-ready — thisiskp_ · 2026-09-19
- Frontier models for planning, cheap models like GLM and DeepSeek for execution — TheZachMueller · 2026-09-19