Exclusive: Accounting AI startup Rillet reaches unicorn status with $1 billion valuation. Its founder says he wants to give CFOs back their weekends | Fortune0

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• August 18, 2026

Rillet, a two-year-old startup building what it calls the first truly AI-native accounting platform, has raised a $100 million Series C at a $1 billion valuation, the company told Fortune exclusively—joining the ranks of AI-era unicorns racing to unseat decades-old enterprise software giants. The round, led by ICONIQ with participation from returning backers Sequoia Capital,