In the ongoing US trial where Google is defending itself against monopoly claims, new details have emerged regarding the amount the tech giant pays to remain the default search engine on Apple’s Safari web browser.

An expert testifying on behalf of Google revealed that the company sends 36% of the advertising revenue generated on Apple’s Safari to the iPhone maker.

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The relationship between Google and Apple is a focal point in the monopoly case, with prosecutors alleging that their dealings have unlawfully restricted competition.

During the trial, Google’s lead lawyer reportedly “visibly cringed” when the specific share of ad revenue sent to Apple was disclosed.

Google has consistently argued that its dominance in online searches is a result of offering a superior product.

The trial, which began in September, involves Google facing off against the US Department of Justice, and many proceedings have been shielded from the public to safeguard trade secrets.

However, some details have emerged, indicating that Google paid over $26 billion to various companies, including Apple, Samsung, and Mozilla, to be installed as the default search engine.

Analysts estimate that Apple alone received more than $18 billion.

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University of Chicago professor Kevin Murphy, testifying in court, highlighted the substantial sums paid by Google and Alphabet as evidence of intense competition in the market.

The trial, expected to conclude in the coming days, features witnesses such as Alphabet chief Sundar Pichai and Microsoft boss Satya Nadella.

The US Department of Justice prosecutors are seeking significant penalties, including an end to anti-competitive practices.

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A ruling, expected in early next year, could have substantial implications for the tech industry, even if it falls short of a company breakup.