Ops Development & AI Practice

Oct 1, 2026 · Operations

Sonnet 5.5's Terminal-Bench 4.0 Win: Costly Mirage? DevOps Model Selection Guide

The article analyzes Claude Sonnet 5.5's 70.6% Terminal-Bench 4.0 score, revealing it only surpasses Opus 5.5 at $13 per task via brute-force retries, while Opus dominates at practical $1-8 budgets; it maps scores to DevOps task complexity and provides a four-quadrant model selection matrix based on blast radius and state depth.