Big data company Cerebri created a carbon calculator and examined the variance between pre-trip predictions and actual flight emissions. Its model produced overall results that fell within 1 percent of actuals, though for any given flight, the swing was plus or minus 10 percent, according to co-founder and CEO Jean Belanger.

Launched in 2016, Cerebri began focusing on corporate travel coming out of the pandemic partly because "no one seemed to have a definitive answer for data quality issues," said Belanger. The company began working on data reconciliation, trip cost predictions and other analytics, "and . . .

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