Artificial intelligence agents powered by the world’s most advanced language models routinely fail to complete even straightforward professional tasks on their own, according to groundbreaking research released Thursday by Upwork, the largest online work marketplace.But the same study reveals a more promising path forward: When AI agents collaborate with human experts, project completion rates surge by up to 70%, suggesting the future of work may not pit humans against machines but rather pair them together in powerful new ways.The findings, drawn from more than 300 real client projects posted to Upwork’s platform, marking the first systematic evaluation of how human expertise amplifies AI agent performance in actual professional work — not synthetic tests or academic simulations. The research challenges both the hype around fully autonomous AI agents and fears that such technology will imminently replace knowledge workers.”AI agents aren’t that agentic, meaning they aren’t that good,” Andrew Rabinovich, Upwork’s chief technology officer and head of AI and machine learning, said in an exclusive interview with VentureBeat. “However, when paired with expert human professionals, project completion rates improve dramatically, supporting our firm belief that the future of work will be defined by humans and AI collaborating to get more work done, with human intuition and domain expertise playing a critical role.”How AI agents performed on 300+ real freelance jobs—and why they struggledUpwork’s Human+Agent Productivity Index (HAPI) evaluated how three leading AI systems — Gemini 2.5 Pro, OpenAI’s GPT-5, and Claude Sonnet 4 — performed on actual jobs posted by paying clients across categories including writing, data science, web development, engineering, sales, and translation.Critically, Upwork deliberately selected simple, well-defined projects where AI agents stood a reasonable chance of success. These jobs, priced under $500, represent less than 6% of Upwork’s total gross services volume — a tiny fraction of the platform’s overall business and an acknowledgment of current AI limitations.”The reality is that although we study AI, and I’ve been doing this for 25 years, and we see significant breakthroughs, the reality is that these agents aren’t that agentic,” Rabinovich told VentureBeat. “So if we go up the value chain, the problems become so much more diff …
