  AI research is increasingly industry-driven, making it crucial to understand
company contributions to this field. We compare leading AI companies by
research publications, citations, size of training runs, and contributions to
algorithmic innovations. Our analysis reveals the substantial role played by
Google, OpenAI and Meta. We find that these three companies have been
responsible for some of the largest training runs, developed a large fraction
of the algorithmic innovations that underpin large language models, and led in
various metrics of citation impact. In contrast, leading Chinese companies such
as Tencent and Baidu had a lower impact on many of these metrics compared to US
counterparts. We observe many industry labs are pursuing large training runs,
and that training runs from relative newcomers -- such as OpenAI and Anthropic
-- have matched or surpassed those of long-standing incumbents such as Google.
The data reveals a diverse ecosystem of companies steering AI progress, though
US labs such as Google, OpenAI and Meta lead across critical metrics.
