AI Index
The mission of the AI Index is to provide unbiased, rigorously vetted, and globally sourced data for policymakers, researchers, journalists, executives, and the general public to develop a deeper understanding of the complex field of AI. To achieve this, we track, collate, distill, and visualize data relating to artificial intelligence.
The 2025 AI Index Report Is Here
The 2025 Index is our most comprehensive to date and arrives at an important moment, as AI’s influence across society, the economy, and global governance continues to intensify.
AI’s influence on society has never been more pronounced.
At Stanford HAI, we believe AI is poised to be the most transformative technology of the 21st century. But its benefits won’t be evenly distributed unless we guide its development thoughtfully. The AI Index offers one of the most comprehensive, data-driven views of artificial intelligence. Recognized as a trusted resource by global media, governments, and leading companies, the AI Index equips policymakers, business leaders, and the public with rigorous, objective insights into AI’s technical progress, economic influence, and societal impact.
Recognized Globally
The AI Index is recognized globally as one of the most credible and authoritative sources for data and insights on artificial intelligence.
Previous editions have been cited in major newspapers, including the The New York Times, Bloomberg, and The Guardian, have amassed hundreds of academic citations, and been referenced by high-level policymakers in the United States, the United Kingdom, and the European Union, among other places. This year’s edition surpasses all previous ones in size, scale, and scope, reflecting the growing significance that AI is coming to hold in all of our lives.
Cited By Governments In
AI Index in the News
HAI Associate Director Russ Altman discusses how artificial intelligence improves patient care and expands research capacity, as reported by the AI Index from the Institute for Human-Centered Artificial Intelligence.
Vanessa Parli, Stanford HAI Director of Research and AI Index Steering Committee member, notes that the 2025 AI Index reports flourishing and higher-quality academic research in AI.
Stanford HAI's 2025 AI Index Reveals Record Growth in AI Capabilities, Investment, and Regulation
The 2025 AI Index highlights key developments over the past year, including major gains in model performance, record levels of private investment, new regulatory action, and growing real-world adoption.
Vanessa Parli, HAI Director of Research and AI Index Steering Committee member, speaks about the biggest takeaways from the 2025 AI Index Report.
Stanford HAI's 2025 AI Index Reveals Record Growth in AI Capabilities, Investment, and Regulation
"The AI Index equips policymakers, researchers, and the public with the data they need to make informed decisions — and to ensure AI is developed with human-centered values at its core," says Russell Wald, Executive Director of Stanford HAI and Steering Committee member of the AI Index.
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Who We Are
The AI Index program is an independent initiative at the Stanford HAI. The program is a collaborative effort led by the AI Index Steering Committee, an interdisciplinary group of experts from across academia and industry. See All People
Evaluating AI Progress and Impact
We write about the progress and impact of artificial intelligence through a cross-sector lens, from research and development to technical performance, the economy, education, policy, and more.
Measurement in AI Policy: Opportunities and Challenges
As artificial intelligence increasingly influences our world, it becomes crucial to assess its technical progress and societal impact. This paper surveys problems and opportunities in the measurement of AI systems and their impact, based on a workshop held at Stanford University in the fall of 2019. We identify six summary challenges inherent to measuring the progress and impact of AI, and summarize over 40 presentations and associated discussions from the workshop. We hope this can inspire research agendas in this crucial area.
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Judicial Decision Data Collection
On a research project regarding the application of AI-relevant regulatory frameworks, the AI Index is collaborating with Dr. Elif Kiesow Cortez who founded and leads the AI & LegTech Lab of The Hague University of Applied Sciences. The project aims to improve predictability and legal certainty for providers and users of AI technology via a judicial decision database.
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Stanford HAI relies on philanthropic support as it pursues its mission. Unrestricted gifts and pledges to support Stanford HAI, including AI Index, may be made online.
We welcome feedback and new ideas for our annual reports and the Global AI Vibrancy Tool at nmaslej@stanford.edu