AI companies posted a median valuation step-up of 2.2x this year against 1.6x for non-AI. Median AI pre-money valuation at Series D and later now sits at $3.95bn. For 2025 the median discount is 4.7%. PitchBook puts the secondary discount band for 2021 and 2022 vintages at 54% to 59%. Median Series A pre-money valuation hit $64m in the second quarter, more than triple the $21m of 2020.