Anthropic now leads OpenAI in B2B adoption for the first time, with 34.4 percent of US companies on the Ramp AI Index compared to OpenAI's 32.3 percent. Anthropic quadrupled its reach in just one year, but three factors could erode that lead quickly.

Anthropic is in talks to raise funding that would value it at between $900bn and $950bn, according to reports.

For the first time, Anthropic has more verified business customers than OpenAI, according to this month’s AI Index from the fintech firm Ramp.