SemiAnalysis GDPx benchmark shows no AI agent scores above 12 percent

SemiAnalysis has released GDPx, a real-world work benchmark that places AI agents in simulated knowledge-work environments across 11 domains and 206 tasks. No model scored above 12 percent, with Claude Opus 5.5 leading at 12 percent, Gemini 4 Carbon at 10.9 percent at about one-third the cost, and GPT-6 Astra at 9.6 percent. Safety filters and closed task sets also affect the rankings and verifiability.