The number of groups lobbying the U.S. federal government on artificial intelligence nearly tripled from 2022 to 2023, rocketing from 158 to 451 organizations, according to data from OpenSecrets, a nonprofit that tracks and publishes data on campaign finance and lobbying. Data on the total amount spent on lobbying by each organization and interviews with two congressional staffers, two nonprofit advocates familiar with AI lobbying efforts, and two named experts suggest that large technology companies have so far dominated efforts to influence potential AI legislation.