Anthropic Economic Index economic primitives

Summary

IntroductionHow is AI reshaping the economy?This report introduces new metrics of AI usage to provide a rich portrait of interactions with Claude in November 2025, just prior to the release of Opus 4.5. These “primitives”—simple, foundational measures of how Claude is used, which we generate by asking Claude specific questions about anonymized Claude.ai and first-party (1P) API transcripts—cover five dimensions relevant to AI’s economic impact: user and AI skills, how complex tasks are, the degree of autonomy afforded to Claude, how successful Claude is, and whether Claude is used for personal, educational, or work purposes.The results reveal striking geographic variation, real-world estimates of AI task horizons, and a basis for revised assessments of Claude's macroeconomic impact.The data we release alongside this report are the most comprehensive to date, covering five new dimensions of AI use, consumer and firm use, and country and region breakdowns for Claude.ai.What has changed since our last reportIn the first chapter, we revisit findings from our previous Economic Index report published in September 2025. We find:Claude usage remains concentrated among certain tasks, most of them related to coding While we see over 3,000 unique work tasks in Claude.ai, the top 10 most common tasks account for 24% of our sampled conversations, a slight increase since our last report. Augmentation patterns (conversations where the user learns, iterates on a task, or gets feedback from Claude) edged to just over half of conversations on Claude.ai. In contrast, automated use remains dominant in 1P API traffic, reflecting its programmatic nature.Global usage remains persistently uneven while US states convergeThe US, India, Japan, the UK, and South Korea lead in overall Claude.ai use. Worldwide, uneven adoption remains well-explained by GDP per capita. Within the US, workforce composition plays a key role in shaping uneven adoption as states with more computer and mathematical pr...