SemiAnalysis GDPx explained: why the best AI agent scores 12 percent, what each point costs, and the caveats the headline leaves out
SemiAnalysis published GDPx on November 2, 2026, a benchmark of 206 long-horizon agent tasks across 11 expert fields in which the top model, Claude Opus 5.5, scored just 12.0 percent at $51.41 per task. Dividing each lea…