# Artificial Analysis Ranks Claude Opus 5.5 First in Tougher Coding Agent Index

AlphaSignal, 2026-10-23. [Read the original](https://alphasignal.ai/news/artificial-analysis-ranks-claude-opus-5-5-first-in-tougher-coding-agent-index).

Artificial Analysis launched Coding Agent Index v2.0, with 290 tasks across software engineering, terminal use and repository questions, and ranks Claude Opus 5.5 first.